Thus, if a subject is singular, its verb must also be singular; if a subject is plural, its verb must also be plural. In present tenses, nouns and verbs form plurals in opposite ways: nouns ADD an s to the singular form, BUT verbs REMOVE an s from the singular form. Here are nine subject-verb agreement rules. 1.
Verb Tense Worksheets - Free worksheets for teachers on verb tenses, simple past, past perfect, past progressive, past perfect progressive and so on.