This document discusses different types of verbs including linking verbs, action verbs, transitive verbs, and intransitive verbs. It provides examples of how to identify linking verbs and distinguish them from action verbs. Specifically, it notes that linking verbs connect the subject of a sentence to an adjective or noun that renames or describes the subject, while action verbs express physical or mental activity. The document also lists commonly used linking verbs and provides practice examples for identifying linking verbs.