This document discusses transitive and intransitive verbs. Transitive verbs require a direct object to complete their meaning, transferring the verb's action to the object. Examples are "She threw the ball" and "They baked a cake." Intransitive verbs do not require a direct object and express a complete action without one. Examples are "He ran quickly" and "The birds are singing." Some verbs can be both transitive and intransitive depending on whether a direct object is present. The document provides examples of identifying verbs as transitive or intransitive in sentences and exercises for the reader to practice.