Subject-Verb Agreement
Subjects and verbs must AGREE with one another in number (singular or plural). Thus, if a subject is singular, its verb must also be singular; if a subject is plural, the verb should also be plural. This helps in the proper balancing of the grammar. Also, in terms of the indefinite pronouns like anyone, everyone, someone, they always require the singular verb. Subject-verb agreement plays a very important role in the formation of the right sentences. The basic rules hence should be taken into consideration and sentences should be formed with the actual subject-verb agreement.