Verbs are important parts of sentences that express actions, conditions, or states of being. There are different types of verbs including action verbs, linking verbs, auxiliary verbs, and modal verbs. Action verbs indicate what a subject performs, while linking verbs add details about the subject. Auxiliary verbs help the main verbs by showing time, tense, and possibility. Modal verbs assist the main verb to indicate possibility, ability, permission, and expectation. The document provides examples and definitions of various verb types to help the reader identify and properly use verbs.