22i With who, which, and that, use verbs that agree with their antecedents.

Like most pronouns, the relative pronouns who, which, and that have antecedents, nouns or pronouns to which they refer. A relative pronoun used as the subject of a subordinate clause takes a verb that agrees with its antecedent.

The example reads,

Take a (Italics) course that prepares (End Italics) you for classroom management. The word course is the antecedent; the word that is the pronoun; the word prepares is the verb. An arrow from verb points to antecedent.

Constructions such as one of the students who [or one of the things that] cause problems for writers. Do not assume that the antecedent must be one. Instead, consider the logic of the sentence.

The sentence reads as follows: ‘Our ability to use language is one of the things that sets us apart from animals.’ [The word sets is modified to set.]

Text below the sentence reads, ‘The antecedent of that is things, not one. Several things set us apart from animal.’

When the word only comes before one, you are safe in assuming that one is the antecedent of the relative pronoun.

The example reads,

Veronica was the only one of the first-year Spanish students who (strikethrough) were (end strikethrough) (insert) was (end insert) fluent enough to apply for the exchange program.

Text below reads, The antecedent of (Italics) who (End Italics) is (Italics) one (End Italics), not (Italics) students (End Italics). Only one student was fluent enough.