Sentence Correction Exercises | Diagnose the Grammar Relationship Before Changing a Word

A sentence-correction question is not really asking, “Which word looks wrong?” It is asking, “Which grammatical relationship has failed, and what is the smallest change that restores it without changing the intended meaning?”

This longform manual develops that diagnosis-first habit. It is part of the Secondary English Editing Examination Performance system and sits beside the lane’s work on error detection, high-value grammar families, passage transfer and timed execution.

The job here is narrower: one sentence at a time, diagnose the relationship before touching the wording.

MEANING → STRUCTURE → CONTROLLER → RELATIONSHIP → ERROR TEST → MINIMAL REPAIR → VERIFICATION.

Maren’s role is structural: what is the sentence made of? Iona’s role is evidential: what exactly proves that the original is wrong? Leonie’s role is operational: can the decision be made efficiently without speculative rewriting? Together, these three lenses turn sentence correction from instinctive substitution into grammatical reasoning.

1. Why sentence correction deserves its own system

Sentence correction is often treated as a worksheet category: an incorrect sentence appears, the learner rewrites it, and the answer key confirms the result. That format hides the real skill.

A strong editor must do at least seven things:

1. understand the intended meaning;
2. parse enough structure to see what controls what;
3. locate the suspicious relationship;
4. decide whether the original is actually wrong;
5. generate a repair;
6. choose the smallest valid repair;
7. reread the whole sentence to make sure the repair has not created a new problem.

If a learner skips the diagnosis stage, she may still get familiar items right but will struggle when the surface form changes.

2. Detection and correction are separate

Consider:

The list of names are on the board.

If a teacher underlines are, many learners can change it to is. But if the sentence is presented without a cue, some will read straight past the error because plural names attracts the verb.

That reveals two different skills:

• detection: noticing that agreement deserves inspection;
• correction: knowing that singular head list requires is.

This article focuses on the correction mechanism after detection: how to identify the controller and repair the relationship reliably.

3. Correction is not rewriting

If a sentence contains one grammatical error, do not replace the whole sentence merely because you can write a better one.

Each of the machines need maintenance.

Minimal repair:

Each of the machines needs maintenance.

A larger rewrite—Every machine requires regular maintenance—may be excellent English, but it changes more than the diagnosis requires.

Minimal repair is useful because it:

• proves the diagnosis;
• reduces the chance of new errors;
• preserves meaning;
• fits constrained examination formats;
• makes answer checking faster.

4. The burden-of-proof rule

Before changing anything, complete this thought:

The original is wrong because ______.

Weak answer: “It sounds odd.”

Strong answer: “The head of the subject phrase is singular, so the finite verb must be singular.”

Weak answer: “I think on is wrong.”

Strong answer: “The adjective interested selects the preposition in in this standard frame.”

The stronger proof transfers to new sentences.

5. Sentence correction starts with meaning

Grammar cannot always be solved from form alone.

Leonie almost answered every question correctly.

This is grammatical. It means she came close to answering every question but perhaps did not actually do so.

Leonie answered almost every question correctly.

This is also grammatical. It means she answered nearly all questions correctly.

Moving almost changes meaning. An editor must first know which meaning is intended.

6. The sentence skeleton

For many corrections, identify:

• main subject;
• finite verb;
• object or complement;
• embedded clauses;
• modifiers;
• connectors.

You do not need a full linguistic diagram. You need enough structure to locate control.

7. Controller is the key word

A controller is the word or relationship that determines the correct form elsewhere.

Examples:

• subject head controls finite-verb agreement;
• modal controls base verb form;
• perfect have controls past participle;
• time expression constrains tense;
• noun slot controls adjective or determiner pattern;
• verb/adjective can control complement or preposition;
• antecedent controls pronoun number/reference;
• paired structure controls parallelism.

Sentence correction becomes easier when the learner asks, “What controls this form?”

8. The seven-question diagnosis sequence

1. What does the sentence mean?
2. Where is the main clause?
3. Which word or phrase is suspicious?
4. What controls that word or phrase?
5. What rule or pattern should apply?
6. What is the smallest repair?
7. Does the repaired sentence still mean the intended thing?

9. Sentence Anatomy Drill A

For each sentence, identify the main subject and finite verb before deciding whether anything is wrong.

1. The quality of the photographs has improved.
2. The photographs in the archive have faded.
3. Each of the students needs a copy.
4. The number of visitors is increasing.
5. A number of visitors are waiting outside.
6. The report that Iona submitted was accepted.
7. One of the researchers who work here has published the results.
8. The equipment in the storage room was damaged.
9. The effects of the storm were visible for days.
10. The series of workshops begins next week.

All ten are correct. The exercise trains structure without the distraction of repair.

10. Sentence Anatomy Drill B

Now identify the controller and correct only when necessary.

1. The quality of the photographs have improved.
2. The photographs in the archive has faded.
3. Each of the students need a copy.
4. The number of visitors are increasing.
5. A number of visitors is waiting outside.
6. The report that Iona submitted were accepted.
7. One of the researchers who works here have published the results.
8. The equipment in the storage room were damaged.
9. The effects of the storm was visible for days.
10. The series of workshops begin next week.

Key

1 have → has. 2 has → have. 3 need → needs. 4 are → is. 5 is → are. 6 were → was. 7 relative works → work in the intended plural-antecedent reading and main have → has. 8 were → was. 9 was → were. 10 begin → begins.

11. Agreement diagnosis: find the head

The most reliable agreement question is not “Which noun is closest to the verb?” but “What is the head of the subject phrase?”

The colour of the walls has changed.

Head: colour.

The walls in the corridor need repainting.

Head: walls.

12. Agreement Exercise 1 — attraction

1. The list of instructions are on the desk.
2. The instructions in the booklet is clear.
3. The effect of the changes remain uncertain.
4. The changes in policy remains controversial.
5. The condition of the machines have improved.
6. The machines in the workshop needs repair.
7. The quality of the results are encouraging.
8. The results from the second test is encouraging.
9. The cost of the repairs have increased.
10. The repairs to the roof has begun.

Answers

1 are → is. 2 is → are. 3 remain → remains. 4 remains → remain. 5 have → has. 6 needs → need. 7 are → is. 8 is → are. 9 have → has. 10 has → have.

13. Agreement diagnosis: distributive heads

Each, every, either and neither commonly take singular agreement in formal edited English when they are the controlling head.

14. Agreement Exercise 2 — each, every, either, neither

1. Each of the files contain a label.
2. Every one of the machines need maintenance.
3. Neither of the answers seem convincing.
4. Either option work.
5. Each student have a copy.
6. Every participant receive a number.
7. Neither explanation appear complete.
8. Either route lead to the station.
9. Each of the reports was checked.
10. Every one of the answers is different.

Key

1 contain → contains. 2 need → needs. 3 seem → seems. 4 work → works. 5 have → has. 6 receive → receives. 7 appear → appears. 8 lead → leads. 9 correct. 10 correct.

15. Agreement diagnosis: more than one verb system

Sentence:

One of the students who sit near the window has finished.

Relative clause: who sit agrees with plural students.

Main clause: One … has finished agrees with singular One.

Do not force every verb to follow the same noun.

16. Agreement Exercise 3 — embedded clauses

1. The student who sit near the window has finished.
2. The students who sits near the window have finished.
3. One of the books that was missing have been found.
4. One of the books that were missing has been found.
5. The people who attends the workshop are volunteers.
6. The person who attends the workshop are a volunteer.
7. The number of people who use the service have increased.
8. The reasons that were given seems incomplete.
9. Each of the machines that were repaired works properly.
10. The machine that were repaired works properly.

Key

1 sit → sits. 2 sits → sit. 3 was → were and have → has. 4 correct. 5 attends → attend. 6 are → is. 7 main have → has. 8 main seems → seem. 9 correct. 10 were → was.

17. Verb-chain diagnosis

Multi-word verb phrases behave like systems:

• modal + base;
• perfect have + past participle;
• progressive be + -ing;
• passive be + past participle.

If the chain is recognized, many corrections become immediate.

18. Verb-Chain Exercise 1

1. The result may indicates a problem.
2. Leonie can completes the task.
3. The committee has chose a new chair.
4. The students have wrote three pages.
5. The machine is operate normally.
6. The team was work late.
7. The bridge was build in 1980.
8. The samples were store at low temperature.
9. She might has forgotten the key.
10. They should have check the answer.

Key

1 indicates → indicate. 2 completes → complete. 3 chose → chosen. 4 wrote → written. 5 operate → operating if progressive meaning is intended. 6 work → working. 7 build → built. 8 store → stored. 9 has → have. 10 check → checked.

19. Verb-Chain Exercise 2 — correct controls

All are correct:

1. The result may indicate a problem.
2. Leonie can complete the task.
3. The committee has chosen a new chair.
4. The students have written three pages.
5. The machine is operating normally.
6. The team was working late.
7. The bridge was built in 1980.
8. The samples were stored at low temperature.
9. She might have forgotten the key.
10. They should have checked the answer.

Correct controls are essential because they train the learner not to edit every auxiliary chain.

20. Tense diagnosis: build a timeline

Tense correction should begin with time, not tense names.

Ask:

• When did the event happen?
• Is the period finished?
• Does it continue to now?
• Did it happen before another past event?
• Is it a routine or general truth?

21. Tense Exercise 1 — finished time

1. She has submitted the form yesterday.
2. The museum has opened in 2004.
3. Maren has completed the task last night.
4. Iona has met the tutor on Monday.
5. The team has finished the trial two weeks ago.
6. She submitted the form yesterday.
7. The museum opened in 2004.
8. Maren completed the task last night.
9. Iona met the tutor on Monday.
10. The team finished the trial two weeks ago.

Key

Items 1–5: change present perfect to simple past because the time expression is finished and definite. Items 6–10 are correct.

22. Tense diagnosis: unfinished time

Since plus a starting point and for plus a duration often support present perfect or present perfect progressive when the period continues to now.

23. Tense Exercise 2 — since and for

1. She works here since January.
2. They wait for two hours and are still waiting.
3. The programme grows steadily since March.
4. Iona studies English for six years and still studies it.
5. The team collects data since 2023.
6. She has worked here since January.
7. They have been waiting for two hours.
8. The programme has grown steadily since March.
9. Iona has studied English for six years.
10. The team has collected data since 2023.

Key

Items 1–5 require present perfect or present perfect progressive in the intended ongoing contexts. Items 6–10 are correct.

24. Tense diagnosis: earlier past

Past perfect is useful when one past event occurred before another past reference point and that relation needs to be explicit.

It is not compulsory every time the word before appears.

25. Tense Exercise 3 — past relationships

1. By the time Leonie arrived, the meeting has started.
2. By the time Leonie arrived, the meeting had started.
3. Before the teacher arrived, the students began the warm-up.
4. Before the teacher arrived, the students had begun the warm-up.
5. When the phone rang, Iona was writing the conclusion.
6. When the phone rang, Iona has written the conclusion.
7. After Maren had finished the draft, she took a break.
8. After Maren finished the draft, she took a break.
9. By noon, the technicians repaired the fault.
10. By noon, the technicians had repaired the fault.

Analysis

1 incorrect: has started → had started. 2 correct. 3 and 4 can both be correct because before already establishes sequence; past perfect adds emphasis to prior completion. 5 correct for an action in progress when the phone rang. 6 wrong in the intended past narrative. 7 and 8 can both be correct. 9 and 10 can both be grammatical depending whether by noon is simply a finished deadline report or a reference point emphasizing prior completion.

The lesson: tense correction requires meaning, not slogans.

26. Future time clauses

In many standard English constructions, subordinate clauses introduced by when, after, before, until and as soon as use present tense for future reference.

27. Tense Exercise 4 — future clauses

1. When the meeting will start, we will review the plan.
2. After I will finish, I will call you.
3. Before she will leave, she will check the room.
4. As soon as the results will arrive, we will begin.
5. Until the bus will come, we will wait here.
6. When the meeting starts, we will review the plan.
7. After I finish, I will call you.
8. Before she leaves, she will check the room.
9. As soon as the results arrive, we will begin.
10. Until the bus comes, we will wait here.

Key

Items 1–5: remove the future auxiliary from the time clause; use present tense. Items 6–10 are correct.

28. Word-form diagnosis: identify the slot

Word-form correction is easier when the learner identifies the grammatical slot before choosing a suffix.

Ask:

• Is a noun required?
• Is an adjective modifying a noun or completing a linking verb?
• Is an adverb modifying an action, adjective or another adverb?
• Is a verb form required by an auxiliary?

29. Word-Form Exercise 1 — adjective or adverb

1. The machine operates automatic.
2. The explanation was remarkable clear.
3. Maren responded calm.
4. The students worked careful.
5. The result changed sudden.
6. The machine operates automatically.
7. The explanation was remarkably clear.
8. Maren responded calmly.
9. The students worked carefully.
10. The result changed suddenly.

Key

Items 1–5 require adverbs. Items 6–10 are correct.

30. Linking verbs change the diagnosis

After linking verbs, adjectives often describe the subject:

• The plan seems sensible.
• The soup tastes good.
• The room became quiet.

Do not automatically add -ly.

31. Word-Form Exercise 2 — linking versus action

1. The plan seems sensibly.
2. The plan seems sensible.
3. Iona looked careful at the graph.
4. Iona looked carefully at the graph.
5. The fabric feels softly.
6. The fabric feels soft.
7. The speaker sounded confidently.
8. The speaker sounded confident.
9. Leonie felt carefully along the edge.
10. The bell sounded loudly across the hall.

Key

1 sensibly → sensible. 2 correct. 3 careful → carefully. 4 correct. 5 softly → soft in the linking meaning. 6 correct. 7 usually confidently → confident if sounded links the speaker to a quality. 8 correct. 9 correct because felt is an action. 10 correct because sounded describes an event/action.

32. Noun slots

Determiners and adjectives often signal a noun slot:

• a significant improvement;
• the success of the project;
• their final decision;
• an accurate analysis.

33. Word-Form Exercise 3 — noun formation

1. The team celebrated their succeed.
2. There was a significant improve.
3. The decision caused widespread confuse.
4. The investigation led to an important discover.
5. The rapid of the change surprised everyone.
6. The team celebrated their success.
7. There was a significant improvement.
8. The decision caused widespread confusion.
9. The investigation led to an important discovery.
10. The rapidity of the change surprised everyone.

Key

Items 1–5 require noun forms. Items 6–10 are correct, though speed may be more natural than rapidity in some contexts.

34. Participial adjectives

-ed forms often describe the experiencer; -ing forms often describe the cause:

• The students were bored.
• The lesson was boring.

35. Word-Form Exercise 4 — -ed and -ing

1. The students were boring by the lecture.
2. The lecture was bored.
3. Maren felt confusing.
4. The explanation was confused.
5. Leonie was exciting by the news.
6. The news was excited.
7. The students were bored by the lecture.
8. The lecture was boring.
9. Maren felt confused.
10. The explanation was confusing.

Key

1 boring → bored. 2 bored → boring. 3 confusing → confused. 4 confused → confusing. 5 exciting → excited. 6 excited → exciting. Items 7–10 are correct.

36. Complement diagnosis

Some verbs and adjectives select particular complements:

• avoid + -ing;
• decide + to-infinitive;
• suggest + -ing or that-clause;
• capable of + -ing;
• look forward to + -ing;
• make + object + base verb;
• allow + object + to-infinitive.

The controller is the lexical item, not a general rule about infinitives.

37. Complement Exercise 1

1. The students avoided to repeat the mistake.
2. Maren decided revising the paragraph.
3. The teacher suggested to check the verb.
4. Iona looks forward to present her findings.
5. The tutor made the students to explain the answer.
6. The school allowed students use dictionaries.
7. The students avoided repeating the mistake.
8. Maren decided to revise the paragraph.
9. The teacher suggested checking the verb.
10. Iona looks forward to presenting her findings.

Key

1 to repeat → repeating. 2 revising → to revise. 3 to check → checking or suggested that they check. 4 present → presenting. 5 delete to. 6 add to: allowed students to use. Items 7–10 are correct.

38. Preposition diagnosis: semantic versus lexical

Some prepositions are selected because of general meaning—time, place, direction. Others belong to lexical frames.

High-value frames:

• interested in;
• responsible for;
• capable of;
• depend on;
• listen to;
• focus on;
• participate in;
• access to;
• effect on;
• solution to;
• reason for.

39. Preposition Exercise 1 — lexical frames

1. Maren is interested on grammar.
2. Iona is responsible of checking the figures.
3. Leonie is capable to solve the problem.
4. The outcome depends of several factors.
5. The students listened the recording.
6. The report focuses in three issues.
7. The students participated on the workshop.
8. The policy had an effect to attendance.
9. We need a solution for the problem.
10. The reason of the delay is unclear.

Key

1 on → in. 2 of → for. 3 to solve → of solving. 4 of → on. 5 add to. 6 in → on. 7 on → in. 8 to → on. 9 for → to in the standard frame solution to. 10 of → for.

40. Preposition Exercise 2 — verbs that take no preposition

1. The team discussed about the issue.
2. Maren entered into the room.
3. The student approached to the teacher.
4. The school requested for information.
5. The team discussed the issue.
6. Maren entered the room.
7. The student approached the teacher.
8. The school requested information.
9. They considered the proposal.
10. They considered about the proposal.

Key

1 remove about. 2 remove into in the ordinary physical-entry meaning. 3 remove to. 4 remove for. 5–9 correct. 10 remove about.

41. Determiner diagnosis

A singular count noun usually requires a determiner in ordinary prose:

• a book;
• the book;
• this book;
• my book.

Plural and mass nouns may appear without an article when used generically.

42. Determiner Exercise 1

1. She bought laptop yesterday.
2. He gave me useful advice.
3. We need an information about the schedule.
4. She found solution quickly.
5. Books can change lives.
6. Water expands when it freezes.
7. She bought a laptop yesterday.
8. He gave me useful advice.
9. We need information about the schedule.
10. She found a solution quickly.

Key

1 add a determiner, usually a. 2 correct. 3 remove an because information is normally uncountable. 4 add a determiner. 5–10 correct.

43. Countability diagnosis

Common uncountable nouns in standard English include:

• advice;
• information;
• equipment;
• furniture;
• research;
• evidence;
• feedback in many general uses.

44. Countability Exercise 1

1. We received many useful informations.
2. The team collected several evidences.
3. New equipments arrived yesterday.
4. She gave me three advices.
5. The office bought new furnitures.
6. We received useful information.
7. The team collected several pieces of evidence.
8. New equipment arrived yesterday.
9. She gave me three pieces of advice.
10. The office bought new furniture.

Key

Items 1–5 require uncountable-compatible structures. Items 6–10 are correct.

45. Pronoun diagnosis

Pronouns require three checks:

• case;
• number/person;
• reference clarity.

46. Pronoun Exercise 1 — case

1. Between you and I, the plan seems risky.
2. The manager asked Leonie and I to wait.
3. Please send the document to she.
4. Him and Iona completed the task.
5. The teacher spoke to Maren and he.
6. Between you and me, the plan seems risky.
7. The manager asked Leonie and me to wait.
8. Please send the document to her.
9. He and Iona completed the task.
10. The teacher spoke to Maren and him.

Key

Items 1–5 contain case errors. Items 6–10 are correct.

47. Pronoun Exercise 2 — reflexives

1. Please contact myself if you have questions.
2. Maren completed the work by herself.
3. I myself checked the final answer.
4. The teacher gave the papers to myself.
5. Leonie blamed herself for the mistake.
6. Please contact me if you have questions.
7. Maren completed the work by herself.
8. I myself checked the final answer.
9. The teacher gave the papers to me.
10. Leonie blamed herself for the mistake.

Key

1 myself → me. 2 correct. 3 correct emphatic use. 4 myself → me. 5–10 correct.

48. Pronoun reference is not always one-word correction

When Maren spoke to Iona, she looked worried.

The sentence is grammatically formed but potentially ambiguous. If the task tests strict one-word grammar, this may not be a valid target. If open editing is allowed, repeat the intended noun.

This distinction prevents learners from treating every ambiguous sentence as a simple pronoun-form error.

49. Modifier diagnosis

Introductory modifiers need a logical subject.

Walking through the museum, the paintings impressed Maren.

Grammatically, the paintings are made to walk. Repair by making Maren the main-clause subject.

50. Modifier Exercise 1

1. Walking through the museum, the paintings impressed Maren.
2. After reading the report, the conclusion became obvious to Iona.
3. Built in 1920, tourists still visit the bridge.
4. Looking out of the window, the rain seemed heavier.
5. Exhausted by the climb, the hikers rested.
6. Walking through the museum, Maren noticed the paintings.
7. After reading the report, Iona understood the conclusion.
8. Built in 1920, the bridge still attracts tourists.
9. Looking out of the window, Leonie thought the rain seemed heavier.
10. Exhausted by the climb, the hikers rested.

Key

Items 1–4 contain dangling modifiers. Items 5–10 are correct.

51. Placement diagnosis

Modifier placement changes meaning:

• Only Maren revised the answer.
• Maren only revised the answer.
• Maren revised only the answer.

These are not interchangeable. Correction depends on intended meaning.

52. Parallelism diagnosis

Equivalent ideas should usually appear in equivalent grammatical forms.

The course teaches students to analyse evidence, write clearly and evaluating sources.

Repair evaluating → evaluate.

53. Parallelism Exercise 1

1. The programme aims to reduce waste, improving efficiency and lower costs.
2. Maren enjoys reading, writing and to discuss ideas.
3. The job requires accuracy, patience and to pay attention to detail.
4. Iona wants either to revise now or waiting until morning.
5. The students were asked to read, identify and explaining the errors.
6. The programme aims to reduce waste, improve efficiency and lower costs.
7. Maren enjoys reading, writing and discussing ideas.
8. The job requires accuracy, patience and attention to detail.
9. Iona wants either to revise now or to wait until morning.
10. The students were asked to read, identify and explain the errors.

Key

Items 1–5 require parallel repair. Items 6–10 are correct.

54. Comparison diagnosis

Comparisons require both grammar and logical equivalence.

The rainfall in City A is higher than City B.

This compares rainfall with a city. Repair:

The rainfall in City A is higher than that in City B.

55. Comparison Exercise 1

1. This method is more easier.
2. No other runner was as faster as Leonie.
3. The salary of engineers is higher than teachers.
4. The rainfall here is greater than the coast.
5. The second passage is the most shortest.
6. This method is easier.
7. No other runner was as fast as Leonie.
8. The salary of engineers is higher than that of teachers.
9. The rainfall here is greater than that on the coast.
10. The second passage is the shortest.

Key

Items 1–5 contain comparison errors. Items 6–10 are correct.

56. Relative-clause diagnosis

Three checks:

• what is the antecedent?
• what role does the relative word play inside the clause?
• what number controls the relative-clause verb?

57. Relative-Clause Exercise 1

1. The student who she won the prize thanked her teacher.
2. The books that is on the shelf belong to Iona.
3. The students who studies regularly improve.
4. The device that we tested yesterday worked well.
5. The teacher whom we met was helpful.
6. The student who won the prize thanked her teacher.
7. The books that are on the shelf belong to Iona.
8. The students who study regularly improve.
9. The device that we tested yesterday worked well.
10. The teacher whom we met was helpful.

Key

1 delete she. 2 is → are. 3 studies → study. 4–10 correct.

58. Connector diagnosis

Connectors encode logical relationships. Name the relationship before changing the word.

59. Connector Exercise 1

1. Although the road was flooded, but the bus continued.
2. Because the printer failed, therefore the report was delayed.
3. The evidence was limited; however, the researchers reported the uncertainty clearly.
4. The task was difficult, but Leonie remained calm.
5. Although the roads were flooded, the match continued.
6. Because the printer failed, the report was delayed.
7. The evidence was limited; however, the researchers reported the uncertainty clearly.
8. The task was difficult, but Leonie remained calm.
9. Although the roads were flooded, but the match continued.
10. Because the printer failed, so the report was delayed.

Key

1 remove but. 2 remove therefore or restructure. 3–8 correct. 9 remove but. 10 remove so or restructure.

60. Sentence-boundary diagnosis

Before correcting punctuation, identify independent clauses.

The alarm sounded, everyone left. contains two independent clauses joined by a comma alone in formal edited English.

61. Boundary Exercise 1

1. The alarm sounded, everyone left the building.
2. Because the weather changed suddenly.
3. The team finished the survey, and they began the analysis.
4. The evidence was limited; however, the conclusion was cautious.
5. Although the task was difficult, Leonie remained calm.
6. The printer failed the report was delayed.
7. When the bell rang, the students left.
8. The storm ended. The team resumed work.
9. The room was quiet, the test had begun.
10. Because the route was closed, we turned back.

Key

1 comma splice; use full stop, semicolon or conjunction. 2 fragment; attach a main clause. 3–5 correct. 6 run-on; add punctuation or conjunction. 7–8 correct. 9 comma splice. 10 correct.

62. Correction versus preference

Some forms are grammatical but not every writer’s preference:

• passive voice;
• sentence-initial And in appropriate contexts;
• preposition at sentence end;
• split infinitive;
• singular they;
• collective-noun plural agreement in some varieties.

Do not convert style rules into universal grammar laws.

63. Variation Drill 1

Do not change these automatically:

1. Everyone should bring their notes.
2. The team are arguing among themselves.
3. The data are convincing.
4. The data is convincing.
5. This result is different from the earlier one.
6. This result is different to the earlier one.
7. This result is different than the earlier one.
8. Who did you speak to?
9. To whom did you speak?
10. She decided to carefully review the evidence.

Several forms reflect accepted variation or register. The target examination standard decides what is expected. A world-facing editing system must distinguish standard variation from genuine error.

64. Correction hierarchy

When several possible edits exist, choose in this order:

1. repair the actual grammatical failure;
2. preserve the intended meaning;
3. change as little as possible;
4. follow the task format;
5. prefer a standard, clear form.

65. Why smallest repair matters in multiple-choice sentence correction

Multiple-choice questions often present several rewrites. One may be grammatical but unnecessarily alter meaning. Another may fix one error while creating another. Diagnosis helps eliminate distractors.

Ask whether the option repairs the controller relationship and preserves everything else.

66. Multiple-Choice Diagnostic Set 1

Choose the best correction.

1. The list of items are complete.
   A. The list of items is complete.
   B. The lists of item are complete.
   C. The items list is complete.
   D. The list of item are complete.
2. She has finished the report yesterday.
   A. She finished the report yesterday.
   B. She has finish the report yesterday.
   C. She had finishing the report yesterday.
   D. She finishes the report yesterday.
3. The students worked careful.
   A. The students worked carefully.
   B. The student worked careful.
   C. The students were worked carefully.
   D. The students worked care.
4. Iona is responsible of checking the figures.
   A. Iona is responsible for checking the figures.
   B. Iona is responsibility for checking the figures.
   C. Iona responsible for checked the figures.
   D. Iona is responsible to checking the figures.
5. The team may changes the plan.
   A. The team may change the plan.
   B. The team may changed the plan.
   C. The team may changing the plan.
   D. The team might changes the plan.

Answers

1 A. 2 A. 3 A. 4 A. 5 A. Each correct option makes the smallest repair while preserving meaning.

67. Distractor diagnosis

Wrong options often exploit:

• nearest-noun agreement;
• tense overcorrection;
• wrong word family;
• incorrect preposition;
• added article;
• new meaning;
• new grammar error.

Do not only identify the correct option. Explain why the nearest distractor fails.

68. Sentence Correction Set A — 25 items

1. The basket of apples are on the table.
2. The students in the back row is taking notes.
3. Each of the proposals need further discussion.
4. The quality of the photographs have improved.
5. A number of participants is waiting outside.
6. The number of participants are increasing.
7. The committee has chose a chairperson.
8. The machine may requires repair.
9. The samples were store in a freezer.
10. The students are revise for the test.
11. She has visited the museum yesterday.
12. We live here since 2021.
13. When the meeting will start, we will begin.
14. The report was remarkable clear.
15. The team worked systematic.
16. The result depends of several factors.
17. The class discussed about the issue.
18. Iona is capable to solve the problem.
19. We received many useful informations.
20. She bought notebook yesterday.
21. Between you and I, the plan seems risky.
22. The students who studies regularly improve.
23. This method is more easier.
24. The programme aims to reduce waste, improving efficiency and lower costs.
25. Walking through the museum, the paintings impressed Maren.

Set A key

1 are → is. 2 is → are. 3 need → needs. 4 have → has. 5 is → are. 6 are → is. 7 chose → chosen. 8 requires → require. 9 store → stored. 10 revise → revising. 11 has visited → visited. 12 live → have lived/have been living. 13 will start → starts. 14 remarkable → remarkably. 15 systematic → systematically. 16 of → on. 17 remove about. 18 to solve → of solving. 19 informations → information and adjust quantifier if needed. 20 add a determiner, usually a notebook. 21 I → me. 22 studies → study. 23 remove more. 24 improving → improve. 25 repair dangling modifier by making Maren the walker.

69. Sentence Correction Set B — 25 correct controls

All are correct:

1. The basket of apples is on the table.
2. The students in the back row are taking notes.
3. Each of the proposals needs further discussion.
4. The quality of the photographs has improved.
5. A number of participants are waiting outside.
6. The number of participants is increasing.
7. The committee has chosen a chairperson.
8. The machine may require repair.
9. The samples were stored in a freezer.
10. The students are revising for the test.
11. She visited the museum yesterday.
12. We have lived here since 2021.
13. When the meeting starts, we will begin.
14. The report was remarkably clear.
15. The team worked systematically.
16. The result depends on several factors.
17. The class discussed the issue.
18. Iona is capable of solving the problem.
19. We received useful information.
20. She bought a notebook yesterday.
21. Between you and me, the plan seems risky.
22. The students who study regularly improve.
23. This method is easier.
24. The programme aims to reduce waste, improve efficiency and lower costs.
25. Walking through the museum, Maren noticed the paintings.

70. The correct-control principle

For every error pattern, practise a correct sentence with the same surface trigger. This prevents the learner from treating cues as automatic evidence.

Example:

• Wrong: The number of students are rising.
• Correct: A number of students are waiting.

The phrase number of students appears in both. Meaning and head structure decide the verb.

71. Sentence Correction Set C — mixed correct/error

Mark C or E before correcting.

1. The series of lectures begins next month.
2. The series of lectures begin next month.
3. The news was unexpected.
4. The news were unexpected.
5. The equipment was expensive.
6. The equipment were expensive.
7. The team has been working since March.
8. The team worked here since March and still does.
9. The explanation was surprisingly clear.
10. The explanation was surprising clear.
11. The report is based on evidence.
12. The report is based in evidence.
13. The students listened to the recording.
14. The students listened the recording.
15. Maren enjoys reading and writing.
16. Maren enjoys to read and writing.
17. The device that we tested worked well.
18. The device that we tested work well.
19. The rainfall here is higher than that on the coast.
20. The rainfall here is higher than the coast.

Key

Odd-numbered items are correct. Even-numbered items are incorrect in the intended contexts.

72. Diagnosis by family

Before correction, label the family:

1. The list of changes are complete. — Agreement.
2. She has finished yesterday. — Tense.
3. The machine operates reliable. — Word form.
4. Interested on science. — Preposition.
5. Walking home, the rain began. — Modifier.
6. The salary here is higher than teachers. — Comparison.
7. The students who studies regularly improve. — Relative-clause agreement.
8. Although it rained, but we continued. — Connector.
9. Because the road was closed. — Fragment.
10. Between you and I. — Pronoun case.

The labels are tools for organizing feedback. The real target is the relationship.

73. Sentence Correction Set D — advanced structure

1. One of the students who works in the laboratory have published a report.
2. The number of machines that requires repair are increasing.
3. Each of the studies that were reviewed have limitations.
4. The report, together with its appendices, were submitted yesterday.
5. Neither the manager nor the assistants was available.
6. There is several reasons for the delay.
7. Only after the second test the fault became clear.
8. Had the warning arrived earlier, the team might changed course.
9. Not only the new route reduced travel time, but it also improved reliability.
10. What the committee need is more evidence.

Key and notes

1 In the intended plural-relative reading, works → work and main have → has. 2 relative requires → require if that refers to plural machines; main are → is because head number. 3 main have → has; relative were reviewed agrees with plural studies. 4 were → was. 5 under a proximity-agreement convention, was → were because nearer subject assistants is plural; follow target standard. 6 is → are. 7 inversion required after fronted restrictive Only after…: did the fault become clear. 8 changed → have changed inside modal perfect might have changed. 9 inversion after fronted Not only: Not only did the new route reduce…. 10 need → needs because the fused relative clause What the committee needs is singular in this structure.

74. Inversion should not be mistaken for error

Correct but less familiar:

• Only then did Iona understand the problem.
• Never had Maren seen such a result.
• Not only did Leonie finish on time, but she also checked her work.
• Had the warning arrived earlier, the team would have changed course.

These are grammatical. Advanced correction requires enough exposure to preserve formal structures.

75. Sentence Correction Set E — inversion controls

All are correct:

1. Only after the second test did the fault become clear.
2. Never had the researchers seen such a pattern.
3. Not only did the new method save time, but it also reduced waste.
4. Had the warning arrived earlier, the team would have changed course.
5. Little did Iona expect the first answer to be correct.

76. Ellipsis and omitted repeated material

English often omits repeated words when the structure remains clear:

Maren can analyse the sentence, and Iona can too.

This is grammatical. Do not “repair” every omission by repeating the entire phrase.

77. Coordination diagnosis

With coordinated structures, check:

• number of the combined subject;
• parallel form of coordinated elements;
• whether one conjunction already expresses the logical relationship.

78. Coordination Exercise 1

1. Maren and Iona is ready.
2. The pen and the notebook belongs to Leonie.
3. The programme aims to reduce waste and improving efficiency.
4. The team collected samples, analysed them and writing the report.
5. Although the road was closed, but we continued.
6. Maren and Iona are ready.
7. The pen and the notebook belong to Leonie.
8. The programme aims to reduce waste and improve efficiency.
9. The team collected samples, analysed them and wrote the report.
10. Although the road was closed, we continued.

Key

Items 1–5 are incorrect; items 6–10 are correct.

79. Passive voice diagnosis

Passive voice is not automatically wrong. It is useful when the actor is unknown, unimportant or deliberately backgrounded.

The samples were stored at low temperature. is grammatical and often appropriate.

Do not rewrite passives merely because an active sentence is possible.

80. Passive Exercise 1

1. The bridge was build in 1980.
2. The results were record carefully.
3. The equipment was damaged during transport.
4. The samples were stored at low temperature.
5. The report was completed yesterday.
6. The bridge was built in 1980.
7. The results were recorded carefully.
8. The equipment was damaged during transport.
9. The samples were stored at low temperature.
10. The report was completed yesterday.

Key

1 build → built. 2 record → recorded. Items 3–10 are correct.

81. Correction and collocation

Some sentences are structurally grammatical but lexically nonstandard:

do a decision versus make a decision.

Whether this belongs to the editing task depends on scope. If collocation is tested, correct it. If the task guarantees grammar-only errors, do not treat every unusual pairing as the target.

82. Collocation Exercise 1

1. make a decision;
2. do homework;
3. heavy rain;
4. strong rain;
5. take responsibility;
6. do a decision;
7. make progress;
8. perform an experiment;
9. conduct an experiment;
10. make research.

In many standard varieties, 4 is less conventional than heavy rain, 6 should be make a decision, and 10 should usually be do/conduct research. But these are lexical/collocational decisions, not always pure grammar.

83. Ambiguity versus error

Visiting relatives can be annoying.

This sentence is grammatically ambiguous: it can mean the act of visiting relatives or relatives who are visiting. Ambiguity is not necessarily grammatical error.

Do not “correct” every sentence with more than one interpretation unless clarity is part of the task.

84. Ambiguity Drill

Decide whether the sentence is ungrammatical or merely ambiguous.

1. Visiting relatives can be tiring.
2. When Maren spoke to Iona, she looked worried.
3. The teacher saw the student with the telescope.
4. The dog chased the cat in the garden.
5. The report that the manager said was incomplete was revised.

All can be grammatical but structurally or referentially ambiguous. Open editing may improve clarity, but constrained grammar correction should not invent an error.

85. Sentence Correction Set F — 30 mixed items

1. The purpose of the new rules are to reduce confusion.
2. Every one of the windows were closed.
3. A number of errors has been found.
4. The number of errors have fallen.
5. The committee has chose a new chair.
6. The results may indicates a change.
7. The bridge was build in 1975.
8. The students have wrote their answers.
9. Yesterday, Maren has submitted the draft.
10. Since March, the team collected weekly data.
11. When the bell will ring, the students will leave.
12. The machine operates automatic.
13. The explanation was remarkable clear.
14. The students completed the task successful.
15. The report contains a detailed analyse.
16. The result depends of several variables.
17. The class listened the recording twice.
18. The team discussed about the findings.
19. Leonie is responsible of checking the clock.
20. Iona is interested on grammar.
21. We received several useful advices.
22. The equipments were delivered yesterday.
23. Please contact myself if you have questions.
24. The manager asked Maren and I to stay.
25. The students who studies regularly improve.
26. The course teaches students to analyse evidence, writing clearly and evaluate sources.
27. This method is more easier.
28. The rainfall here is higher than the coast.
29. Walking through the archive, the old photographs caught Iona’s attention.
30. Although the task was difficult, but Leonie remained calm.

Set F key

1 are → is. 2 were → was. 3 has → have. 4 have → has. 5 chose → chosen. 6 indicates → indicate. 7 build → built. 8 wrote → written. 9 has submitted → submitted. 10 collected → has collected/has been collecting if ongoing. 11 will ring → rings. 12 automatic → automatically. 13 remarkable → remarkably. 14 successful → successfully. 15 analyse → analysis. 16 of → on. 17 add to. 18 remove about. 19 of → for. 20 on → in. 21 advices → advice with compatible quantifier. 22 equipments → equipment and were → was. 23 myself → me. 24 I → me. 25 studies → study. 26 writing → write. 27 remove more. 28 compare rainfall with rainfall: higher than that on the coast. 29 dangling modifier; make Iona the subject. 30 remove but.

86. Sentence Correction Set G — 30 correct controls

All are correct:

1. The purpose of the new rules is to reduce confusion.
2. Every one of the windows was closed.
3. A number of errors have been found.
4. The number of errors has fallen.
5. The committee has chosen a new chair.
6. The results may indicate a change.
7. The bridge was built in 1975.
8. The students have written their answers.
9. Yesterday, Maren submitted the draft.
10. Since March, the team has collected weekly data.
11. When the bell rings, the students will leave.
12. The machine operates automatically.
13. The explanation was remarkably clear.
14. The students completed the task successfully.
15. The report contains a detailed analysis.
16. The result depends on several variables.
17. The class listened to the recording twice.
18. The team discussed the findings.
19. Leonie is responsible for checking the clock.
20. Iona is interested in grammar.
21. We received useful advice.
22. The equipment was delivered yesterday.
23. Please contact me if you have questions.
24. The manager asked Maren and me to stay.
25. The students who study regularly improve.
26. The course teaches students to analyse evidence, write clearly and evaluate sources.
27. This method is easier.
28. The rainfall here is higher than that on the coast.
29. Walking through the archive, Iona noticed the old photographs.
30. Although the task was difficult, Leonie remained calm.

87. Why correct controls matter more at advanced level

Beginners mainly need to learn what wrong looks like. Advanced learners also need to know what unusual but correct language looks like.

Otherwise, greater grammar knowledge can create more false positives.

88. Advanced control sentences

All correct:

1. Only after the second test did the fault become clear.
2. Had the warning arrived earlier, the team might have changed course.
3. What the committee needs is more evidence.
4. Not only did the route reduce travel time, but it also improved reliability.
5. Each of the studies that were reviewed has limitations.
6. One of the researchers who work here has published the results.
7. The equipment, together with the manuals, was delivered yesterday.
8. There appears to be a difference between the samples.
9. The findings are consistent with those reported earlier.
10. Little did Iona expect the first answer to be correct.

89. Diagnostic matrix

What the learner does	Likely weakness	Training response
Changes nearest noun instead of verb	Controller not identified	Head-noun drills
Knows rule after teacher points to error	Detection weak	Unlabelled mixed sentences
Finds error but gives wrong replacement	Repair knowledge weak	Minimal-pair reconstruction
Changes correct sentences often	Evidence threshold weak	Correct-control sets
Rewrites whole sentence	Minimal repair weak	One-change constraints
Correct untimed, wrong timed	Execution weak	Compressed diagnosis drills

90. One-change constraint training

Give a sentence with one error and require exactly one change. This forces the learner to identify the true target.

91. One-Change Set A

1. The list of options are complete.
2. She has finished yesterday.
3. The device operates reliable.
4. Iona is interested on grammar.
5. Each of the answers seem plausible.
6. The bridge was build in 1980.
7. The students listened the recording.
8. The report was remarkable clear.
9. The number of complaints have fallen.
10. When the meeting will start, we will begin.

Key

1 are → is. 2 has finished → finished is a multi-word tense repair; if only one word may change, redesign the item because deleting has changes the structure but leaves finished correct. 3 reliable → reliably. 4 on → in. 5 seem → seems. 6 build → built. 7 insert to. 8 remarkable → remarkably. 9 have → has. 10 will start → starts requires replacing a phrase, so again the task format must permit it.

Good exercise design must respect the exact allowed repair unit.

92. Why some sentences are bad test items

A poorly designed correction item may:

• allow several equally good corrections;
• require more than the stated number of changes;
• depend on missing context;
• treat style preference as grammar;
• ignore recognized variation;
• contain an accidental second error.

Learning to recognize bad items can improve a learner’s linguistic judgment, although the real examination is expected to provide clear constraints.

93. Teacher design protocol

When creating a sentence-correction item:

1. write a clean sentence;
2. identify one target relationship;
3. seed one plausible error;
4. verify that no second error was introduced;
5. check whether only one reasonable repair fits;
6. add correct controls with similar surface cues;
7. record the explanation, not just the answer.

94. Error seeding examples

Clean:

The quality of the samples has improved.

Seeded attraction error:

The quality of the samples have improved.

Clean:

The result may indicate a change.

Seeded modal error:

The result may indicates a change.

Clean:

The students worked carefully.

Seeded word-form error:

The students worked careful.

95. Difficulty without obscure grammar

Make sentence correction harder by increasing:

• distance between controller and target;
• number of embedded clauses;
• presence of correct distractor forms;
• legitimate alternative structures;
• semantic load;
• need for minimal repair.

Do not rely only on rare exceptions.

96. Distance Exercise

1. The quality of the photographs taken during the final stage have improved.
2. The reasons for the changes proposed by the committee remains unclear.
3. The number of students who attend the weekly sessions have increased.
4. One of the reports that were submitted last month contain an error.
5. The effect of the new rules on several departments are still being studied.

Key

1 have → has. 2 remains → remain. 3 main have → has; relative attend correctly agrees with plural students. 4 main contain → contains; relative were submitted is correct. 5 are → is.

97. Embedded-Clause Exercise

1. The student who the teachers believe is ready have applied.
2. The students who Iona says are ready has applied.
3. One of the machines that the technicians think needs repair are missing.
4. The report that Maren believes contains the key figures were submitted yesterday.
5. The reasons that the committee says explain the delay is unclear.

Key

1 main have → has. 2 main has → have. 3 main are → is; embedded needs may refer to singular one machine depending structure and is acceptable. 4 main were → was. 5 main is → are; embedded explain agrees with plural reasons.

98. Meaning-preservation test

After correction, ask whether the proposition remains the same.

The rainfall in the valley is higher than the coast.

Correcting to higher than that on the coast preserves the comparison.

Changing to The valley has more rain than the coast also expresses similar meaning but rewrites more than necessary.

99. Meaning Shift Drill

Which corrections preserve meaning most closely?

1. Leonie almost answered every question. → Leonie answered almost every question.
2. The list of names are complete. → The list of names is complete.
3. She has worked here since 2022. → She worked here in 2022.
4. The device operates reliable. → The device operates reliably.
5. Walking through the museum, the paintings impressed Maren. → Walking through the museum, Maren was impressed by the paintings.

Items 2, 4 and 5 are meaning-preserving repairs. Items 1 and 3 change meaning materially.

100. Verification after correction

Verification asks:

• Does the repair fit the grammatical slot?
• Does it agree with the controller?
• Does the sentence still mean the intended thing?
• Did the repair create a new error?

One reread is usually enough.

101. Repair That Creates New Error

Original:

Each of the machines need repair.

Bad correction:

Each of the machine needs repair.

The verb is fixed, but a new number problem appears inside the of-phrase. Minimal repair need → needs is better.

102. Overcorrection Drill

1. Original: The list of names are complete.
   Best repair: are → is.
2. Original: She has submitted the form yesterday.
   Best repair: has submitted → submitted.
3. Original: The team discussed about the issue.
   Best repair: delete about.
4. Original: The machine operates reliable.
   Best repair: reliable → reliably.
5. Original: Each of the reports contain a summary.
   Best repair: contain → contains.

Do not change unrelated nouns, order, vocabulary or voice.

103. Sentence Correction Set H — 40-item mastery audit

1. The list of required materials are on the first page.
2. The students in the final group has finished.
3. Each of the reports include a summary.
4. The effects of the storm was visible for weeks.
5. A number of volunteers is helping today.
6. The number of volunteers have increased.
7. Neither of the explanations seem complete.
8. There is several reasons for the delay.
9. The news were surprising.
10. The equipment were expensive.
11. Leonie can completes the exercise quickly.
12. Maren should have check the reference.
13. Iona has wrote three pages.
14. The samples were store safely.
15. Yesterday, the team has submitted its report.
16. We live here since 2020.
17. When the bell will ring, the students will leave.
18. After she will finish the test, she will review her answers.
19. The machine operates automatic.
20. The students worked careful.
21. The decision caused widespread confuse.
22. The report contains a detailed analyse.
23. She gave me an useful advice.
24. We received several informations.
25. He bought notebook before class.
26. Maren is interested on language change.
27. The outcome depends of several variables.
28. The class discussed about the passage.
29. The students listened the recording twice.
30. Leonie avoided to make the same mistake.
31. Maren decided revising the paragraph.
32. Iona looks forward to present her findings.
33. The tutor made the students to explain their reasoning.
34. Between you and I, the answer seems uncertain.
35. The teacher gave the papers to he and his partner.
36. The students who studies regularly improve.
37. The programme aims to improve accuracy, increasing speed and build confidence.
38. This method is more easier than the previous one.
39. The rainfall here is higher than the coastal town.
40. Walking through the museum, the damaged frame caught Maren’s attention.

Mastery key

1 are → is. 2 has → have. 3 include → includes. 4 was → were. 5 is → are. 6 have → has. 7 seem → seems. 8 is → are. 9 were → was. 10 were → was. 11 completes → complete. 12 check → checked. 13 wrote → written. 14 store → stored. 15 has submitted → submitted. 16 live → have lived/have been living. 17 will ring → rings. 18 will finish → finishes. 19 automatic → automatically. 20 careful → carefully. 21 confuse → confusion. 22 analyse → analysis. 23 remove an. 24 informations → information and fix quantifier. 25 add a or another determiner. 26 on → in. 27 of → on. 28 remove about. 29 add to. 30 to make → making. 31 revising → to revise. 32 present → presenting. 33 delete to. 34 I → me. 35 he → him. 36 studies → study. 37 increasing → increase. 38 remove more. 39 compare rainfall with rainfall: higher than that in the coastal town. 40 dangling modifier; make Maren the subject.

104. Sentence Correction Set I — 40 correct controls

All are correct:

1. The list of required materials is on the first page.
2. The students in the final group have finished.
3. Each of the reports includes a summary.
4. The effects of the storm were visible for weeks.
5. A number of volunteers are helping today.
6. The number of volunteers has increased.
7. Neither of the explanations seems complete.
8. There are several reasons for the delay.
9. The news was surprising.
10. The equipment was expensive.
11. Leonie can complete the exercise quickly.
12. Maren should have checked the reference.
13. Iona has written three pages.
14. The samples were stored safely.
15. Yesterday, the team submitted its report.
16. We have lived here since 2020.
17. When the bell rings, the students will leave.
18. After she finishes the test, she will review her answers.
19. The machine operates automatically.
20. The students worked carefully.
21. The decision caused widespread confusion.
22. The report contains a detailed analysis.
23. She gave me useful advice.
24. We received useful information.
25. He bought a notebook before class.
26. Maren is interested in language change.
27. The outcome depends on several variables.
28. The class discussed the passage.
29. The students listened to the recording twice.
30. Leonie avoided making the same mistake.
31. Maren decided to revise the paragraph.
32. Iona looks forward to presenting her findings.
33. The tutor made the students explain their reasoning.
34. Between you and me, the answer seems uncertain.
35. The teacher gave the papers to him and his partner.
36. The students who study regularly improve.
37. The programme aims to improve accuracy, increase speed and build confidence.
38. This method is easier than the previous one.
39. The rainfall here is higher than that in the coastal town.
40. Walking through the museum, Maren noticed the damaged frame.

105. Error-log structure for sentence correction

Original	Controller	Relationship	Repair	Why missed
list of names are	list	agreement	is	nearest noun attraction
has finished yesterday	yesterday	finished past time	finished	overused present perfect
worked careful	worked	verb modified by adverb	carefully	slot misidentified
responsible of	responsible	lexical frame	for	frame not stored
students who studies	students	relative-clause agreement	study	antecedent not traced

106. Explain the controller, not only the rule name

“Subject–verb agreement” is a category, not a full diagnosis.

Better:

Head noun list is singular; therefore is.

“Tense” is also too broad.

Better:

Yesterday marks a finished past period; therefore simple past submitted.

This precision improves transfer.

107. Correction speed should emerge from compression

During early training, say the full reasoning. Later, compress:

• “head singular”;
• “modal + base”;
• “finished past”;
• “adverb slot”;
• “responsible for”;
• “parallel verbs.”

The reasoning has not disappeared. It has become accessible faster.

108. One-week sentence-correction cycle

Day 1 — baseline

Complete a mixed set with correct controls. Separate missed detection, wrong repair and false positives.

Day 2 — controller work

Practise agreement heads, verb chains and complement controllers.

Day 3 — word-form and preposition slots

Label slot before repair.

Day 4 — complex sentences

Add relative clauses, modifiers, parallelism and comparisons.

Day 5 — ambiguity and variation

Use correct but unfamiliar structures.

Day 6 — timed mixed set

Compress the diagnosis without guessing.

Day 7 — delayed unseen retest

Use entirely new sentences.

109. Six-week progression

Week 1: sentence skeleton and agreement. Week 2: verb chains and tense. Week 3: word form and countability. Week 4: complements, prepositions and pronouns. Week 5: modifiers, relative clauses, comparisons and connectors. Week 6: mixed diagnosis, correct controls and timed transfer.

110. Twelve-week progression

Weeks 1–2 establish controller identification. Weeks 3–4 build verb systems and time. Weeks 5–6 develop word classes and noun-phrase control. Weeks 7–8 build lexical frames and complementation. Weeks 9–10 add advanced syntax and variation. Week 11 runs mixed examination-style sentence sets. Week 12 reduces the process to a compact personal diagnosis routine and verifies stability.

111. A 30-minute session

1. 5 minutes: controller retrieval;
2. 8 minutes: ten mixed sentences with proofs;
3. 5 minutes: mark false positives and wrong repairs;
4. 5 minutes: rebuild the top relationship;
5. 5 minutes: five unseen transfer sentences;
6. 2 minutes: update error log.

112. A 60-minute session

1. 10 minutes structure and controller drills;
2. 15 minutes mixed correction;
3. 10 minutes advanced syntax;
4. 10 minutes correct-control work;
5. 10 minutes timed set;
6. 5 minutes transfer log.

113. Diagnostic profile: Maren

Maren sees sentence structure well but sometimes rewrites too much. Her goal is minimal repair.

Training cue:

What is the smallest change that proves my diagnosis?

114. Diagnostic profile: Iona

Iona explains grammar accurately but can overthink accepted variation. Her goal is burden of proof.

Training cue:

What exact relationship fails? If none fails, preserve the original.

115. Diagnostic profile: Leonie

Leonie knows the rules but becomes fast and shallow under pressure. Her goal is compressed verification.

Training cue:

Controller → repair → one reread → move.

116. Sentence Correction Set J — diagnostic families

Label each before correcting.

1. The collection of maps were moved yesterday.
2. The team may requires more time.
3. She has visited the museum last week.
4. The explanation was remarkable clear.
5. The outcome depends of several factors.
6. The students who studies regularly improve.
7. The programme aims to reduce waste, improving efficiency and lower costs.
8. The rainfall in the valley is higher than the coast.
9. Walking through the gallery, the paintings impressed Iona.
10. Although the test was difficult, but Leonie remained calm.

Family and key

1 agreement: were → was. 2 modal verb form: requires → require. 3 tense: has visited → visited. 4 word form: remarkable → remarkably. 5 preposition: of → on. 6 relative-clause agreement: studies → study. 7 parallelism: improving → improve. 8 comparison: compare rainfall with rainfall. 9 modifier attachment: make Iona the walker. 10 connector redundancy: remove but.

117. Sentence Correction Set K — advanced mixed 30

1. The report, together with its appendices, were submitted.
2. Neither the manager nor the assistants was available.
3. There appears to be several problems.
4. Only after the second attempt the error became clear.
5. Had the warning arrived earlier, the team might changed course.
6. Not only the method saved time, but it also reduced waste.
7. What the committee need is more evidence.
8. Each of the studies that were reviewed have limitations.
9. The number of people who use the service have increased.
10. A number of people who uses the service have complained.
11. The team has completed the task yesterday.
12. By the time the train arrived, we have waited for an hour.
13. When the meeting will begin, we will review the figures.
14. The students are capable to explain the result.
15. The teacher suggested to check the evidence again.
16. She looks forward to present her findings.
17. The manager made the staff to repeat the check.
18. The fabric feels softly.
19. The machine performed reliable throughout the test.
20. The decision caused widespread confuse.
21. The team collected several evidences.
22. He gave me an advice.
23. The researcher who she designed the study presented the results.
24. My aunt, who lives abroad is visiting next month.
25. The programme is designed to improve access, reducing cost and increase reliability.
26. No other runner was as faster as Leonie.
27. The salary of engineers is higher than teachers.
28. After reading the message, the mistake became obvious.
29. The alarm sounded, everyone left the room.
30. Because the printer failed, therefore the report was delayed.

Set K key

1 were → was. 2 in proximity-agreement systems, was → were; follow target standard. 3 appears → appear in formal agreement with plural postverbal noun. 4 inversion: did the error become clear. 5 might changed → might have changed. 6 inversion after fronted Not only: Not only did the method save…. 7 need → needs. 8 main have → has. 9 main have → has. 10 relative uses → use. 11 has completed → completed. 12 have waited → had been waiting in intended earlier-past duration. 13 will begin → begins. 14 to explain → of explaining. 15 to check → checking or that-clause. 16 present → presenting. 17 delete to. 18 softly → soft if linking meaning. 19 reliable → reliably. 20 confuse → confusion. 21 evidences → evidence / pieces of evidence. 22 remove an or use a piece of advice. 23 delete she. 24 add closing comma after abroad if punctuation is in scope and the clause is nonrestrictive. 25 reducing → reduce. 26 faster → fast. 27 than teachers → than that of teachers. 28 dangling modifier: make the reader the subject. 29 comma splice: use full stop, semicolon or conjunction. 30 remove therefore or restructure.

118. Sentence Correction Set L — advanced correct controls

All are correct in their intended standard contexts:

1. The report, together with its appendices, was submitted.
2. There appear to be several problems.
3. Only after the second attempt did the error become clear.
4. Had the warning arrived earlier, the team might have changed course.
5. Not only did the method save time, but it also reduced waste.
6. What the committee needs is more evidence.
7. Each of the studies that were reviewed has limitations.
8. The number of people who use the service has increased.
9. A number of people who use the service have complained.
10. The team completed the task yesterday.
11. By the time the train arrived, we had been waiting for an hour.
12. When the meeting begins, we will review the figures.
13. The students are capable of explaining the result.
14. The teacher suggested checking the evidence again.
15. She looks forward to presenting her findings.
16. The manager made the staff repeat the check.
17. The fabric feels soft.
18. The machine performed reliably throughout the test.
19. The decision caused widespread confusion.
20. The team collected several pieces of evidence.
21. He gave me useful advice.
22. The researcher who designed the study presented the results.
23. My aunt, who lives abroad, is visiting next month.
24. The programme is designed to improve access, reduce cost and increase reliability.
25. No other runner was as fast as Leonie.
26. The salary of engineers is higher than that of teachers.
27. After reading the message, Iona noticed the mistake.
28. The alarm sounded; everyone left the room.
29. Because the printer failed, the report was delayed.
30. The findings are consistent with those reported earlier.

119. Timed diagnosis without rushing

When the grammar is secure, compress the seven-question sequence:

MEANING → CONTROLLER → RULE → MINIMAL REPAIR → ONE REREAD.

For full timed editing, use the dedicated English Editing Under Time Pressure manual. This page remains the sentence-diagnosis owner.

120. From sentence correction to passage editing

Sentence correction isolates the grammatical relationship. Passage editing adds discourse context.

A learner should move to passages when she can:

• identify the controller independently;
• explain the repair;
• preserve correct controls;
• avoid rewriting unnecessarily;
• handle mixed families without labels.

Then use Passage Editing Practice to test transfer.

121. Retest protocol

Never prove mastery by repeating the exact same sentence. Retest the relationship with new nouns, new contexts and different surface structures.

Missed:

The list of names are complete.

Retest:

• The quality of the images has improved.
• The series of workshops begins next week.
• The number of applicants is increasing.
• The effect of the changes remains uncertain.

122. Transfer cue writing

After each error, write one cue:

• “of-phrase: find noun before of first”;
• “modal: base verb”;
• “yesterday: finished past”;
• “action verb + manner: adverb”;
• “responsible for”;
• “relative verb follows antecedent.”

Cues should be short enough to retrieve under pressure.

123. Sentence correction and independent learning

A learner becomes independent when she no longer needs the teacher to point at the suspect word.

Use four levels:

1. target word underlined;
2. error family named;
3. sentence unlabelled;
4. mixed sentence set with correct controls.

Progress through the levels.

124. Final 50-item independence audit

Mark C or E, repair E minimally, and identify the controller.

1. The quality of the samples has improved.
2. The quality of the samples have improved.
3. The samples from the second trial look stable.
4. The samples from the second trial looks stable.
5. Each of the reports contains a summary.
6. Each of the reports contain a summary.
7. A number of students are waiting outside.
8. A number of students is waiting outside.
9. The number of students is increasing.
10. The number of students are increasing.
11. The result may indicate a change.
12. The result may indicates a change.
13. The committee has chosen a new chair.
14. The committee has chose a new chair.
15. The bridge was built in 1980.
16. The bridge was build in 1980.
17. She submitted the form yesterday.
18. She has submitted the form yesterday.
19. She has lived here since 2022.
20. She lives here since 2022.
21. When the meeting starts, we will begin.
22. When the meeting will start, we will begin.
23. The machine operates reliably.
24. The machine operates reliable.
25. The machine is reliable.
26. The machine is reliably.
27. The explanation was remarkably clear.
28. The explanation was remarkable clear.
29. The outcome depends on several variables.
30. The outcome depends of several variables.
31. The class discussed the issue.
32. The class discussed about the issue.
33. Iona is responsible for checking the figures.
34. Iona is responsible of checking the figures.
35. Leonie is capable of explaining the answer.
36. Leonie is capable to explain the answer.
37. We received useful information.
38. We received several useful informations.
39. Between you and me, the plan seems risky.
40. Between you and I, the plan seems risky.
41. The students who study regularly improve.
42. The students who studies regularly improve.
43. The programme aims to reduce waste, improve efficiency and lower costs.
44. The programme aims to reduce waste, improving efficiency and lower costs.
45. This method is easier than the previous one.
46. This method is more easier than the previous one.
47. The rainfall here is higher than that on the coast.
48. The rainfall here is higher than the coast.
49. Walking through the museum, Maren noticed the paintings.
50. Walking through the museum, the paintings impressed Maren.

Independence key

Odd-numbered items are correct. Even-numbered items are incorrect in the intended contexts. The repair for each even item follows directly from the matching correct control before it.

125. What mastery looks like

A beginner sees a wrong-looking word. An improving learner remembers a rule. A strong learner identifies a controller. An independent editor can explain:

• what relationship is being tested;
• why the original fails;
• why the replacement works;
• why no larger rewrite is necessary;
• why a similar-looking correct sentence should be left alone.

126. Final operating card

WHAT DOES IT MEAN? → WHAT CONTROLS THE SUSPECT FORM? → WHAT RELATIONSHIP SHOULD HOLD? → DOES THE ORIGINAL FAIL? → WHAT IS THE SMALLEST REPAIR? → DOES THE SENTENCE STILL MEAN THE SAME THING?

127. Relation to the wider SETC editing lane

This article owns sentence-level diagnosis and minimal repair. It does not replace:

• detection-before-repair training;
• deep grammar-family practice;
• passage-level context and meaning preservation;
• timed scanning, skip-and-return and stop rules;
• or the broader English Language Control system.

Its place in the sequence is precise: turn each sentence into a visible grammatical relationship before moving to larger performance systems.

128. Next step

Return to the Secondary English Editing Examination Performance hub. The next spoke is Editing Error Types | Build a Personal Grammar Error Map, which will convert individual corrections into a diagnostic classification system for planning future practice.

129. Final principle

DO NOT CORRECT A WORD UNTIL YOU KNOW WHAT CONTROLS IT. DO NOT CHANGE A SENTENCE UNTIL YOU KNOW WHAT FAILED. DO NOT MAKE A LARGE REWRITE WHEN A SMALL REPAIR RESTORES THE RELATIONSHIP. DIAGNOSIS FIRST; CORRECTION SECOND.