A verb is one of the most important parts of the sentence. It tells the subjects actions, events, or state of being. It is always found in the predicate of a sentence. A verb that shows action is called an action verb.
The words are action verbs : coughed swallowed awake ran ride sang
Sometimes there is another word which separates the helping verb from the main verb. One common example is "not", as in: The boy couldn't find his socks. The helping verb is could and the main verb is find.