A verb is the word in a sentence that tells what the subject is doing or explains how the subject is existing. A group of words cannot be a sentence without having a verb as one of the words.
Sometimes a verb tells what the subject of the sentence is doing. We call that an action verb.
Bill rides his bike to school.
Janice found a book a the library.
Bill is doing the action of riding his bike. Janice is doing the action of finding a book.
Some verbs do not show action. Instead, these verbs show existence. In these sentences, the subject is not doing anything. The subject is just existing.
Mary is a nurse.
My brother is at the store.
In each of these sentences, the subject is not doing any action. The subject is just being. Mary is just being a nurse. My brother is just being at the store.
Each sentence you write must have a verb in it. The verb might show action, or the verb might just show existence.
▶It’s your turn. Find the verb in this sentence. The bus drove over the bridge. Did you find the action that the bus is doing? Good for you!