These rules outline subject-verb agreement and describe when singular and plural verbs are used. Rule 1 states that singular subjects take singular verbs and plural subjects take plural verbs. Rule 2 says indefinite pronouns like anyone and everyone are always singular. Rule 3 explains that some indefinite pronouns like all and some can be singular or plural depending on whether the thing referred to is countable. The document provides several examples for each rule to illustrate proper subject-verb agreement.