The document defines and provides examples of different types of verbs:
1) Regular and irregular verbs, with regular verbs forming the past tense by adding "-ed" and irregular verbs having unpredictable past forms.
2) Transitive and intransitive verbs, with transitive verbs taking an object and intransitive verbs not.
3) Action, linking, and helping verbs - with action verbs showing actions, linking verbs connecting subjects to nouns or adjectives, and helping verbs assisting the main verb.
4) Verb phrases are formed when a helping verb is joined with an action or linking verb.