Free GMAT Sentence Correction Practice Test 2026

GMAT Sentence Correction (SC) is one of three question types in the Verbal Reasoning section of the GMAT (along with Critical Reasoning and Reading Comprehension). The GMAT Verbal section contains approximately 36 questions in 65 minutes, of which roughly 12–15 are Sentence Correction questions. Each SC question presents a sentence with part or all of it underlined, followed by five answer choices: option (A) is always the original sentence unchanged, and options (B)–(E) offer revisions. You must select the version that best corrects grammatical errors while being clear, concise, and rhetorically effective. The GMAT Focus Edition (2023 update) modified the section structure but SC remains a core question type.

Based on the Official GMAT Guide and extensive analysis of released problems, the highest-frequency SC topics are: (1) Subject-verb agreement — especially traps involving collective nouns, intervening phrases, 'the number of' vs. 'a number of,' and indefinite pronouns; (2) Parallelism — list parallelism, correlative conjunctions (not only/but also, either/or), and comparison structure; (3) Modifier errors — dangling participial phrases and misplaced relative clauses; (4) Pronoun reference and agreement — ambiguous pronoun reference and number agreement; (5) Verb tense and subjunctive mood — especially 'recommend/require that + base verb'; (6) Idiomatic prepositions — 'result in' vs. 'result from,' 'different from,' 'responsible for'; (7) Rhetorical construction — conciseness, redundancy elimination, and active vs. passive voice preference.

The subjunctive mood is used after verbs of recommendation, requirement, demand, and suggestion — and after 'it is [adjective] that' expressions of necessity. The key feature: the verb in the subjunctive clause uses the base form (infinitive without 'to') for ALL persons and numbers, including third-person singular. Examples: 'The board recommends that the CEO resign' (not 'resigns'); 'The protocol requires that specimens be stored' (not 'are stored'); 'It is essential that every candidate submit the form' (not 'submits'). The subjunctive is heavily tested because native speakers rarely use it in speech — 'the doctor recommends that he takes aspirin' sounds natural but is grammatically incorrect. For passive subjunctive: use 'be + past participle' not 'is/are/was/were.' Memorize the RISSSS verbs: Recommend, Insist, Suggest, Stipulate, Specify, and similar mandate-type verbs.

A dangling modifier is an introductory phrase (participial, infinitive, or appositive) whose implied subject does not match the actual subject of the main clause. The rule: the noun immediately after the comma must be what the introductory phrase describes or the doer of the introductory phrase's action. Test: ask 'Who is doing the action in the opening phrase?' That entity must be the subject of the main clause. Example: 'Having reviewed the evidence, the conclusion was reached' — WRONG (the conclusion did not review evidence). Fix: 'Having reviewed the evidence, the forensic team reached a conclusion.' On the GMAT, all five answer choices for a dangling modifier question will rearrange the sentence — you must identify which version places the correct subject immediately after the participial phrase.

'That' introduces restrictive (defining) relative clauses — clauses that are essential to identifying which specific thing is being discussed. No comma is used before 'that': 'The report that was submitted last Tuesday contained errors' (specifies which report). 'Which' introduces nonrestrictive (parenthetical) relative clauses — clauses that add extra information about an already-identified noun. A comma always precedes 'which': 'The annual report, which was submitted last Tuesday, contained errors' (the report is already identified; the date is extra info). GMAT rule: if a comma precedes the relative clause, use 'which.' If no comma, prefer 'that' for things (use 'who' for people in both cases). Never use 'that' for people in formal GMAT writing.

High-frequency GMAT preposition idioms: result in (X causes Y) vs. result from (Y is caused by X); differ from (things that are unlike) vs. differ with (people who disagree); attribute/credit X to Y (causation); prevent/prohibit/stop X from doing Y; responsible for (duty); consistent with; different from; associated with; compare to (note similarities between unlike things) vs. compare with (examine similarities and differences between similar things); native to; independent of; preferable to; superior to; inferior to; based on; capable of; effective in + gerund. Also memorize: comprise (no 'of'), compose (passive: composed of), constitute (no preposition); 'as' introduces comparisons in clauses; 'like' introduces comparisons between nouns; fewer (countable) vs. less (uncountable); between (two items) vs. among (three or more).

The GMAT Verbal section is scored from 6–51 in one-point increments. Sentence Correction performance contributes to this score along with Critical Reasoning and Reading Comprehension. A Verbal score of 40+ (approximately 90th percentile) is considered highly competitive for top MBA programs. The overall GMAT score (200–800) combines Verbal and Quantitative Reasoning. For top programs like Harvard, Wharton, and Stanford GSB, the median GMAT is typically 730–740, which generally requires a Verbal score around 40–42. Importantly, the GMAT is adaptive — harder questions are worth more. Answering SC questions correctly at high difficulty levels has disproportionate impact on your score.

Most effective GMAT SC preparation strategy: (1) Master the grammar rules first — don't guess based on what 'sounds right'; native speaker intuition is frequently wrong on GMAT SC. Learn the rules for subjunctive, modifier placement, pronoun agreement, parallel structure, and subject-verb agreement systematically; (2) Use the elimination method — identify the error in the original (A), then use that error to eliminate other choices. Usually 2–3 choices share the same error; (3) Always check parallelism in list-containing sentences — this is the fastest error to spot; (4) For idiom questions, either you know the idiom or you don't — build your idiom list systematically; (5) On modifier questions, ask 'who does the action in the opening phrase?' and match to the subject; (6) Use this free practice test to identify your weakest subcategories, then drill those specifically; (7) Time yourself — the GMAT gives roughly 1.8 minutes per Verbal question.