This document provides a review of subject-verb agreement rules. It discusses how to identify the subject and determine if it is singular or plural. Verbs must agree with their subject in number, with singular subjects taking singular verbs and plural subjects taking plural verbs. Exceptions covered include subjects separated from verbs by prepositional phrases, verbs appearing before subjects, indefinite pronoun subjects, and compound subjects. The key rules are that subjects and verbs must match in number, singular verbs end in -s, subjects are never in prepositional phrases, indefinite pronouns are singular, and compound subjects take plural verbs.