The term subject-verb agreement indicates that the subject of a sentence and its verb agree in number, or that the subject and verb are both singular or both plural. If your teacher marks a sentence with a subject-verb agreement error, you have placed either a plural verb with a singular subject or a singular verb with a plural subject. The problem with agreement occurs only when the sentence you write is in present tense, for the singular and plural forms of past and future tenses are the same. When you write in present tense, however, you must make your verb agree with your subject.
Verbs are just the opposite of nouns.
When a present tense verb ends in s , the verb is singular. Therefore, a rule of thumb is that, in most situations, only one of the words, either the subject or verb, will end in s . The girl s sing. Read the following sentences and determine whether the verb agrees with the subject. If it does not, correct the verb.