Pronoun-Antecedent Agreement in Number

A pronoun is a stand-in for a noun, and that noun is its antecedent. For the sentence to make sense, the pronoun has to match the antecedent in number. The test exploits the gap between them: it plants a long phrase, a prepositional chain, or another noun right next to the pronoun, hoping you'll match the pronoun to whatever noun is closest instead of the one it actually replaces.

The fix is mechanical. Find the pronoun, then draw an arrow back to the exact noun it's standing in for, ignoring everything in between. Ask: is that antecedent singular or plural? Words like each, neither, every, and one are singular even though they describe groups, so a pronoun pointing back at them must be singular too. Take 'Each scientist submitted their own data set to the archive.' The antecedent is 'each scientist,' which is singular, so 'their' is wrong. Standard English wants a singular pronoun: 'his or her own data set,' or you could rewrite to 'Each scientist submitted a data set' to dodge the issue entirely.

The nearest-noun trap is the main misconception: a pronoun agrees with its antecedent, not with whatever noun happens to sit right before it. 'Each of the scientists' has 'scientists' sitting closest to the gap, but the true antecedent is 'each,' singular. The same logic extends to antecedents that are themselves pronouns, like 'neither' or 'one' - they're singular by definition, so any pronoun referring back to them stays singular, even across a long sentence full of plural nouns. This same arrow-drawing habit is what you'll use right next for subject-verb agreement, where the trap is identical: a long phrase sits between subject and verb, and you have to find the real subject before you can pick the right verb form.