The subject and verb in a sentence must agree. In other words, if the subject is a singular noun or pronoun, the verb must also be in its singular form. If the subject is plural, the verb must also be plural. For example: She eats lunch every day. The children eat at the table. The singular "she" agrees with the singular "eats," and the plural "children" agrees with the plural "eat."
Agree to Disagree Take turns writing simple sentences in which the subject and verb do not agree. Have family members correct each sentence in two ways, first by changing the subject and second by changing the verb. For example, if someone writes The dog bark, make the sentence correct by saying both The dog barks and The dogs bark.