Sentence correction is the twin of error identification, and confusing the two is the fastest way to lose marks on it. In error identification the fault is hidden and you find one word. Here the faulty portion is already underlined, and your job is to rewrite the whole underlined part so that the sentence becomes correct.
That changes the skill. You are no longer hunting for a fault; you are choosing among five versions of the same clause, and the four wrong ones are engineered to look plausible. The rules remain finite — agreement, pronouns, tense, parallelism, modifiers, comparison forms and idiom — and each has a mechanical test.
Read the sentence for meaning first, and only then look hard at the underlined part.
What the model omits: some options differ only by idiom, which cannot be reasoned out and must be remembered, and a few sentences contain two errors at once, both inside the underline. It also omits that two options may be grammatical while one is clearer — then choose the shorter and more parallel version.
The checklist, in the order the errors usually appear. Run it every time, even when the answer feels obvious.
| Check | The test | Typical fault |
|---|---|---|
| Subject and verb | Strip the phrase between them and match number | The group of students are late |
| Pronoun | Name the noun the pronoun stands for | The firm and it workers |
| Tense | Compare the underlined verb with the other verbs | He has left yesterday |
| Parallelism | Items joined by and or or share a form | to cut, to raise, increasing |
| Modifier | An opening phrase describes the next noun | Walking home, the rain soaked me |
| Comparison | Match the two things being compared | The climate of Lahore is hotter than Multan |
| Idiom | Recall the fixed pair | discuss about the plan |
Comparisons must compare like with like. “The climate of Lahore is hotter than Multan” compares a climate with a city. It becomes “hotter than that of Multan”, or “hotter than the climate of Multan”. The pronoun that stands in for the climate, so the two sides finally match.
The committee's goals were to cut waste, to raise morale, and increasing output. Suppose the underlined part is to cut waste, to raise morale, and increasing output.
The list has three items joined by and. Two are infinitives (to cut, to raise) and the third is a gerund (increasing). The rule is parallelism, so the third item must match the first two.
The corrected underline is to cut waste, to raise morale, and to increase output. A distractor will offer “to cut waste, raising morale, and increasing output”, which fixes the last item but breaks the first two. Another will offer “cutting waste, raising morale, and to increase output”, which reverses the fault. Only the fully parallel version survives.
Which correction makes the list parallel: Her plan was to rest, to eat, and sleeping.
Which correction is needed: The list of items, which the manager checked twice, are on the desk.
Which correction fixes the tense: He said that he will finish the report the next day.
Which version is correct: He is senior than me in the department.
Without looking back: name the first two items on the checklist, and state what “no change” means as an option.
The answer is: subject and verb agreement, then pronoun reference. “No change” means the underlined part is already correct, and it is a genuine answer choice, not a throwaway.
Fill in the blanks from memory:
In this question type you rewrite the whole part. The first check on the list is subject and agreement. Items joined by and must share a grammatical form, which is the rule of . The noun a pronoun stands for is its .
Find every error and give the corrected sentence: Neither of the two proposals, which the board reviewed for months, were accepted, and the director, after consulting his team, have promised to submit new ones.
There are two errors, and both are agreement faults hiding behind interrupting phrases.
Neither of the two proposals ... were accepted. The subject is neither, which is singular. The plural proposals sits immediately before the verb as a decoy, and the relative clause makes the gap even wider. The verb becomes was accepted.
The director ... have promised. The subject is the singular director; the phrase after consulting his team is an interruption, and team is not the subject. The verb becomes has promised.
The corrected sentence reads: Neither of the two proposals, which the board reviewed for months, was accepted, and the director, after consulting his team, has promised to submit new ones. The lesson is to strip interruptions before every agreement check, in both halves of the sentence.
Sentence correction asks you to repair a sentence. The next lesson is the mirror image: finding the single error in a sentence without being told where it is. The same rules apply, but the search is the skill, and the tested list is short and finite.