Main verbs show the main action or state of being in a sentence. Helping verbs (also called auxiliary verbs) work with main verbs to show time, possibility, or necessity.
Every complete verb phrase has a main verb, and sometimes it has one or more helping verbs before it.
The main verb tells what the subject is doing or being. It is the key word that carries the meaning of the action.
Ask yourself: What is the subject doing? The answer will usually be the main verb.
Helping verbs come before the main verb and change its meaning by showing time or possibility.
Helping verbs never stand alone. They always work with a main verb to form a complete idea.
A complete verb phrase is made when helping verbs and a main verb are used together in a sentence.
When you see two or more verbs together, the first one is usually the helping verb, and the last one is the main verb.