Final answer:
Subject-verb agreement in English revolves around matching the verb to its subject in number, whether the subject is singular or plural, and maintaining this agreement regardless of sentence structure or other words present.
Step-by-step explanation:
Subject-verb agreement is crucial for constructing grammatically correct sentences in English. When subjects are combined with and, typically a plural verb is used, while singular units or ideas joined by and take a singular verb. Similarly, when subjects are linked by or or nor, the verb should agree with the closest subject. Words between the subject and verb, as well as inverted sentence structures where the verb precedes the subject, can sometimes present challenges but the fundamental rule that verbs must agree in number with their subjects persists. Also, indefinite pronouns such as everyone or everybody usually take singular verbs. Evaluating the subject-verb agreement involves identifying the subject and ensuring the verb reflects the correct number, singular or plural, to match that subject.