Here's a breakdown:
* Singular Subject: Refers to one person, place, thing, or idea.
* Plural Subject: Refers to more than one person, place, thing, or idea.
* Singular Verb: The form of the verb that agrees with a singular subject.
* Plural Verb: The form of the verb that agrees with a plural subject.
Examples:
* Singular subject, singular verb: The cat sits on the mat.
* Plural subject, plural verb: The cats sit on the mat.
Key Points:
* The rule applies to all tenses (present, past, future).
* It's important to identify the subject of the sentence before choosing the correct verb form.
* Some words can be tricky, such as collective nouns (e.g., team, family) which can be treated as singular or plural depending on context.
Let me know if you have any other questions about subject-verb agreement!