5.1 Grammar Format: Choose the Correctly Written Sentence

The Choose-the-Correct-Sentence Format

Grammar & Punctuation is the second of two sub-skills that fill the remaining slice of Section A: Incident Report Writing Aptitude once the 28-word spelling block is set aside. Alongside Vocabulary in Context, Grammar & Punctuation splits the 16 questions that make up the rest of Section A's 44 total items. Where a spelling item asks you to judge a single isolated word, and a vocabulary item asks you to judge a word's meaning inside a sentence, a grammar and punctuation item asks you to judge an entire sentence at once.

The format is consistent from item to item: you are given four candidate sentences, each describing something a police officer might plausibly write into an incident report - an observation, an action taken, a statement from a witness, a description of a scene. Exactly one of the four sentences is grammatically correct as written. The other three each contain a single, deliberate error: a subject-verb mismatch, an incorrect verb form, a misused homophone, a comma splice, or a similar mechanical flaw. Your task is to identify and select the one sentence that has no error in it.

This is a subtly different skill from the sentence-correction items many test-takers remember from school entrance exams, where a single sentence has an underlined portion and you are asked how to fix it. Here, nothing is underlined and nothing needs to be rewritten. You are choosing among four complete, independently constructed sentences, and the error - when there is one - can appear anywhere in the sentence, not in a flagged section. That means you have to read each option in full; skimming for an obviously broken clause and ignoring the rest of the sentence is a common way to miss an error tucked into an otherwise clean-looking option.

Why the Format Rewards Elimination, Not Instinct

Because three of the four options are wrong and only one is right, this format rewards a specific test-taking method: process of elimination, applied systematically rather than by gut feel. A test-taker who reads all four options quickly and picks whichever one 'sounds best' is gambling on ear for language, which can be unreliable - many grammatically incorrect constructions have become common enough in casual speech that they no longer sound wrong to an untrained ear. A test-taker who instead checks each option against a short mental checklist of common error types is working the format the way it is designed to be worked.

The checklist worth running through the four options, roughly in order of how frequently each error type appears on report-writing grammar items, is:

1. Subject-verb agreement - does the verb match a singular or plural subject, even when a phrase sits between them? (Section 5.2)
2. Verb tense and form - is the correct past-tense or past-participle form used, especially for irregular verbs? (Section 5.3)
3. Homophones and confusable words - is the right spelling-alike word chosen for the intended meaning? (Section 5.4)
4. Basic punctuation and sentence construction - is the sentence a complete, properly joined sentence rather than a comma splice or a fragment? (covered in Chapter 6)

Running through this checklist against all four options, rather than stopping the moment one option 'sounds fine,' is what separates a fast, reliable answer from a lucky guess.

A Worked Example

Consider four candidate sentences built around the same reported event - an officer securing a scene after a break-in call:

Walking through this the way the checklist recommends: Option A has a subject separated from its verb by an intervening phrase, and the verb 'was' does not match the true plural subject 'witnesses' - a Section 5.2 error. Option B uses 'had went' instead of the correct past-participle form 'had gone' - a Section 5.3 error. Option D opens with 'Its clear,' which needed the contraction 'It's' (it is) rather than the possessive 'its' - a Section 5.4 error. Option C has no subject-verb mismatch, no incorrect verb form, and no homophone slip; it is a clean, correctly constructed sentence, which makes it the answer.

Notice that each wrong option fails for a different, single reason - this is a deliberate design feature of the format, not a coincidence specific to this example. Test writers build these items so that each distractor isolates one error type, which is exactly why the checklist works reliably: once you have confirmed an option fails on subject-verb agreement, you do not need to re-check it for tense or homophones - it is already eliminated, and you can move to the next option.

Practical Strategy for Test Day

• Read all four options before choosing, even if the first one looks fine. A later option might be the only one that is genuinely error-free, while the first one has a subtler flaw you have not checked for yet.
• Look for the differentiator. Most four-option grammar items vary only one grammatical feature across the options - often the subject-verb pairing, a verb form, or a single word choice - while keeping the surrounding sentence structure similar. Spotting what changes between the options tells you exactly what rule the item is testing.
• Don't rely on how a sentence sounds when spoken. Several common grammar errors - subject-verb mismatches across long intervening phrases, misused past participles like 'had went' or 'was wrote,' and homophone swaps like 'its' for 'it's' - are extremely common in casual speech and can sound perfectly natural to an ear that has not been trained to catch them in print.
• When two options both look plausible, check them against each other. If two options differ only in one word or phrase, that difference is almost certainly the deciding factor - apply the relevant rule directly to it rather than re-reading the whole sentence repeatedly.