1. The document provides rules for determining subject-verb agreement in sentences. It discusses finding the subject and verb, as well as whether the subject is singular or plural to determine if the verb should be singular or plural.
2. Key factors that determine the number of the verb include whether the subject is singular or plural, compound subjects connected with and/or/nor/either/neither, subjects preceded by portions or percentages, and indefinite pronouns like each/everyone/anyone.
3. Examples are provided to illustrate each rule for determining subject-verb agreement.