1. An imposter verb is a word that resembles a verb but functions as another part of speech such as a noun, adjective, or adverb. 2. There are three types of imposter verbs: participles which act as adjectives, gerunds which act as nouns, and infinitives which act as nouns, adjectives, or adverbs. 3. The document provides examples of each type of imposter verb and asks the reader to identify imposter verbs in sentences.