The document discusses 7 specific cases of subject-verb agreement:
1. Compound subjects connected by "and", "or", or "nor" can take a singular or plural verb depending on the subjects.
2. Subjects that come after the verb agree in number with the subject.
3. Collective nouns can take a singular or plural verb depending on if they refer to a single unit or individuals.
4. Plural-looking nouns like "scissors" or referring to branches of knowledge or characteristics take a singular verb, while those referring to individual things take a plural verb.
5. Indefinite pronouns take a singular or plural verb depending on the number of their