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: Ends in "s" or "es" in the present tense (e.g., walks, sings, dances).
* Plural verb: Does not end in "s" or "es" in the present tense (e.g., walk, sing, dance).
Examples:
* Singular subject, singular verb: The dog barks.
* Plural subject, plural verb: The dogs bark.
Important points to remember:
* Indefinite pronouns: Most indefinite pronouns (e.g., someone, anyone, everyone, nobody) are singular and require singular verbs.
* Collective nouns: Collective nouns (e.g., team, group, committee) can be singular or plural depending on the context. If the group is acting as one unit, use a singular verb. If the members of the group are acting individually, use a plural verb.
* Subject-verb agreement rules: These rules ensure consistency between the subject and verb in terms of number.
Remember, the key is to ensure that your verb agrees with your subject in number. This ensures that your sentences are grammatically correct and easy to understand.