Helping verbs are used along with a main verb to express action or state of being. Some common helping verbs are am, are, is, was, were, being, been, do, does, did, shall, will, should, and would. A verb phrase consists of both a main verb and its accompanying helping verb. Words like do, does, and did can function as either helping verbs or main verbs depending on the context. Adverbs like not can interrupt a verb phrase without being considered part of it. Helping verbs should be underlined in orange when identifying them in sentences.