This document defines and explains different aspects of verbs in English, including:
- Verbs express action or state of being. Common helping verbs include do, has, am, and modal verbs.
- Verbs have person, number, voice, tense, and mood. They can be active, passive, present, past, future.
- Other verbal forms include infinitives, participles, and gerunds. Infinitives can function as nouns, adjectives, or adverbs. Participles and gerunds can take verb complements.