Apronoun and its antecedent must agree in number, person, and subject. number, gender, and person. gender, number, and subject. person, number, and object.

Number, gender, and person.

Explanation:

An antecedent is a word, phrase or clause that a pronoun refers to. In order to express a clear thought, A pronoun and its antecedent must agree in number (singular or plural), in gender (female or male) and in person (First, second or third person). Otherwise, the sentence would be vague and confusing.

Here is a sentence with a pronoun-antecedent agreement:

Bianca always purrs when I caress her tummy.

"Bianca" is the antecedent, and "her" is the pronoun which refers to the antecedent. Notice that they both are singular (number), are female (gender) and are in the third person.

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