Sentence Improvement

1Correct, natural, or already fine

Sentence improvement replaces an underlined part with the best alternative. The winner must be grammatically correct and sound natural in context — not merely different. When the underlined portion is already correct, No improvement is the right answer, and it appears often enough that treating it as a trap wastes marks.

Figure. Decide whether the underlined part is wrong, unnatural, or already fine.

How to decide

1. Read the whole sentenceNever judge the underline in isolation; the subject, tense and tone live in the full clause.
2. Test each optionSubstitute every choice and ask whether grammar still holds and the line sounds like standard written English.
3. Keep No improvement liveIf every change introduces an error or adds nothing, the original stands — pick No improvement without guilt.

2Substitute, then listen

The mechanical habit that prevents most careless picks: read the sentence aloud with each option swapped in for the underline. Your ear catches awkward collocations and broken rhythm long before you can name the rule. Only after the line sounds right do you check tense, agreement and prepositions against the checklist.

Figure. Substitute the option into the sentence, then listen for grammar and sense.

The substitution loop

1. Slot each optionReplace only the underlined span; leave the rest of the sentence fixed so you are comparing like with like.
2. Listen for frictionReject anything that stumbles when read at exam speed — forced word order, wrong preposition, or a verb that no longer matches the subject.
3. Name the rule lastOnce one option sounds clean, confirm it with the specific fix (tense, agreement, comparison, inversion) before marking it.

3Compare like with like

A comparison must put the same kind of thing on both sides. Writing The climate of Delhi is hotter than Shimla compares Delhi's climate with the city itself. Insert that of (singular attribute) or those of (plural attribute) so the second side names the matching quality: hotter than that of Shimla.

Figure. Compare like with like — salary with salary, not salary with a person.

4Comparison prepositions that take to

Several comparative adjectives govern to, not than: senior, junior, superior, inferior, prior, and prefer when it means rank rather than liking. He is senior to me is fixed idiom; than after these words is the error the item usually plants.

Figure. Some comparison adjectives lock to, not than.

5Parallel structure in lists and pairs

Coordinate items joined by and, or, or nor must share the same grammatical form: all nouns, all gerunds, all infinitives, or all clauses of the same kind. The exam hides a break by tucking one unlike form inside a long list. Reading only the word before the blank misses the pattern the list already started.

Figure. Listed forms must share the same grammatical shape.

Spot the pattern

1. Find the coordinatorLocate and / or / nor / both … and that links the items you are comparing.
2. Match the formIf the first item is a gerund (running), the second must be a gerund, not an infinitive (to run) or bare verb (run).
3. Read the full listIn longer series, one early item sets the template for every later slot — including the underlined one.

6Type 3 conditionals about the unreal past

Sentences about a past condition that did not happen and its unreal result use Type 3 framing: If + past perfect in the if-clause, would/could/might have + past participle in the main clause. Never put would have inside the if-clause — that double-modal shape is the classic planted error.

Figure. Type 3: If + past perfect, … would have + V3 — unreal past.

Repair a faulty conditional

1. Classify the timeBoth clauses refer to a finished past that cannot change → Type 3, not Type 2 (present unreal) or mixed forms.
2. Fix the if-clauseReplace would have + past participle with had + past participle: If I had known, not If I would have known.
3. Keep the result clauseThe main clause stays would/could/might have + past participle: …I would have come.

7Inversion after No sooner, Hardly, Scarcely

When No sooner, Hardly, or Scarcely opens the sentence, the auxiliary inverts before the subject: No sooner had he left than it rained, not No sooner he had left. The paired conjunction is than after No sooner and when after Hardly or Scarcely.

Figure. After No sooner / Hardly / Scarcely, invert auxiliary and subject.

8Tense, agreement and connector fixes

The same correction zones as error spotting recur here: subject–verb agreement across intervening phrases, tense consistency with time markers, preposition chunks, and conjunctions that demand parallel clauses. Improvement items often smuggle a plural-looking noun between subject and verb — the verb still agrees with the head subject, not the nearest noun.

Figure. Last-pass fixes: tense consistency, subject–verb agreement, connector logic.