Sentence Improvement
🔒 Log in to trackThe elimination ladder: how to choose in 20 seconds
🔒 Log in to trackSentence improvement gives you a sentence with one highlighted segment and four substitutes (often including 'No substitution required'). You are not hunting for the best-sounding English — you are hunting for the option that survives every grammatical test the original failed.
Work the ladder top to bottom; eliminate as you descend:
| Rung | Question | What it kills |
|---|---|---|
| 1. Verb form & tense | is the highlighted verb the right form for its anchor and helper? | tense clashes (with 'yesterday'), wrong form after did/have, non-finite where finite is needed |
| 2. Agreement | does the verb match the TRUE subject? | plural verbs after 'each', 'one of', 'the list of', 'as well as' |
| 3. Structure | is word order and pairing standard (inversion, that of, correlative pairs)? | broken inversions, mixed pairs, compared-with-itself errors |
| 4. Word choice & idiom | is the preposition/word the fixed partner? | insisted for, angry on, return back |
| 5. Economy | does any option say the same thing in fewer, cleaner words? | redundant add-ons — but beware over-pruning |
The three-option rule: in most items, two options die instantly on rung 1 (wrong verb form) or rung 2 (agreement). That leaves a pair; rung 3 or 4 separates them. Practise announcing WHY an option dies — 'fails agreement', 'breaks the pair', 'wrong preposition partner' — and the ladder becomes automatic.
'No substitution required' discipline: before accepting it, run rungs 1–3 once. It is correct in roughly a quarter of such items — a real option, not a decoy. But never choose it because the sentence merely sounds acceptable; if the highlighted verb disagrees with its subject, 'sounds fine' is irrelevant.
When two options both seem right: prefer the one that is closer to the original in meaning. The exam improves grammar, not the writer's ideas. An option that subtly changes who did what, or adds information, is wrong even if its grammar is clean.
Timing: 20–30 seconds. Read the full sentence first — the part BEFORE the highlight usually carries the anchor (yesterday, did, each, no sooner) that decides everything.
Detailed notes
What sentence improvement asks
One segment of the sentence is printed in bold. Four substitutes are offered, usually including No substitution required. Your job: decide whether the bold part is faulty, and if it is, pick the substitute that repairs it — and only it.
The elimination ladder (four rungs)
- Name the highlighted part's job. Is it a verb, a tense, an article + noun, a preposition, a connector, a comparison phrase? The job tells you which rulebook page to open.
- Run the matching rule. Verb → agreement and tense anchors; article → sound rule; connector → fixed pairs. If the bold part survives its own rule, check whether any other rule touches it.
- Kill the repeat-fault options. Many options repeat the very fault you are fixing (more better → more good). Kill them at once; they are not competitors.
- Kill the new-fault options. Some options repair fault A but plant fault B (Hardly…than instead of Hardly…when). A substitute must be cleaner than the original, not differently wrong.
- If the bold part is standard English, choose No substitution required without hesitation.
The two-fault trap
Examiners build one option that fixes the visible fault and breaks a hidden rule:
- My friend has gone to Delhi yesterday. → the fault is has gone with yesterday; the fix is went. Had gone also removes the perfect, but it creates a wrong sequence (nothing earlier exists to outrank). One fix, two faults removed — that is the answer's test.
Decoy families
Options usually come in families around the bold word:
- Sound-alike / look-alike: effect / affect, loose / lose, advice / advise.
- Form-shifts: adjective ↔ adverb (brave / bravely), noun forms (braveness).
- Marker-doubles: more better, most shortest, more preferable.
- Helper-swaps: has / had / was / did in every combination. Learn to name the family; the correct option is the family member that matches the rule.
Smallest-change principle
When two options both fix the fault, prefer the one that changes less. Exams reward the repair, not a rewrite. If an option replaces the whole structure while another fixes one word, test the one-word fix first.
Timing
Improvement items are fast: 30 to 40 seconds. Read the sentence once fully, name the job, run the rule, walk the ladder.
Quick revision
- Name the job of the bold part → open the matching rulebook page.
- Kill options that repeat the fault; kill options that plant a new fault.
- No substitution required is a full citizen — choose it when the original is standard.
- Watch decoy families: effect/affect, brave/bravely, more better, helper swaps.
- Two options both fix the fault? The smaller, cleaner change wins.
Types of questions asked
Every way this subtopic shows up in exams — how to recognise it, the formula or logic to use, and a solved example.
Type 1: Single-fault fix with repeat-fault decoysvery common3 practice Q
The bold part has one clear fault; two or three options repeat the same fault in a new dress (more good for more better, was being for were).
- Name the fault and its rule.
- Strike out every option that still breaks that same rule.
- Compare the survivors — pick the clean, smallest repair.
Why it works: repeat-fault decoys punish candidates who fix the fault only in their head and stop reading the options.
Example: "The quality of the mangoes (were) not satisfactory this season." was / have been / No substitution required / are being
True subject = quality (singular) → was. 'Have been' and 'are being' repeat the plural fault; strike them out, then compare was with the original.
Type 2: No-substitution disciplinevery common3 practice Q
The bold part is already standard English; the other options are 'repairs' that break it.
- Run the full rule check on the bold part itself.
- If it passes every rule (tense anchor, agreement, pair, comparison), do not invent work.
- Choose No substitution required and move on.
Why it works: papers include 2-3 correct originals per set; changing a correct sentence is the most common self-inflicted error.
Example: "She (has been teaching) in this school since 2015." teaches / is teaching / No substitution required / has taught
Perfect continuous + since 2015 + still continuing → has been teaching is exactly right. Every offered change breaks the frame → No substitution required.
Type 3: Decoy families around the bold wordcommon3 practice Q
The options are near-twins of the bold word: adjective/adverb pairs, noun forms, effect/affect-type twins.
- Decide the job of the slot: describing a noun or an action?
- Cut the family members that do the wrong job (adverb where an adjective sits).
- Of the survivors, keep the one whose meaning fits the sentence.
Why it works: option families are built from one word's relatives; sorting them by job (not by sound) clears the set.
Example: "The soldier was praised for his (brave) act during the rescue." bravely / No substitution required / braveness / bravest
The slot describes the noun act → adjective: brave is correct. Bravely (adverb), braveness (noun) and bravest (wrong count) are the family decoys → No substitution required.
Type 4: Two-fault trap optionscommon3 practice Q
One tempting option fixes the visible fault but plants a second one (a wrong sequence, a broken pair, a wrong part of speech).
- Fix the visible fault in your head first.
- Test every option that seems to fix it against the OTHER rules in the sentence (time words, pairs, count).
- Reject any option that needs a second repair; keep the option that leaves the sentence fully standard.
Why it works: 'has gone yesterday → had gone yesterday' feels fixed; only the second pass exposes the new sequence fault.
Example: "My friend (has gone) to Delhi yesterday to attend an interview." went / had gone / No substitution required / has went
The anchor yesterday demands simple past → went. 'Had gone' removes the perfect but creates a sequence with no earlier event; 'has went' keeps the fault and adds another.
Shortcut tricks
⚡ Anchor before options
Find the time word or helper verb near the highlight ('yesterday', 'did', 'each of the'), decide what the verb must look like, then pick the option matching YOUR form.
Example: She has met him yesterday evening. Options: met / has meet / was met / No substitution required.
Anchor 'yesterday' = finished past → simple past 'met'. Option 1; the other two fail rung 1 outright.
⚡ Death-note elimination
In your head, tag every option with its fatal flaw before choosing: 'plural verb', 'breaks inversion', 'wrong partner'. If no option has a flaw, the answer is 'No substitution required'.
⚡ Meaning guard
Between two grammatical survivors, choose the one that preserves the original meaning word for word — the exam rewards accuracy, not elegance.
Where students lose marks
Choosing a grammatical option that changes the meaning (active↔passive swap, added agents).
Picking 'No substitution required' because the sentence sounds natural at speed.
Improving a part that was never highlighted — only the bold segment may change.
Overlooking the anchor in the unhighlighted part of the sentence.
Practice sets — 12 questions
Sets of 10, mixed across the question types above. Each answer comes with a step-by-step explanation.
Topic test · 12 questions
Suggested time 8 min · wrong answers go to your mistake notebook automatically.