The document discusses transitive verbs and the passive voice in English grammar. It defines transitive verbs as verbs that take direct objects and describes the three steps to form a passive sentence: (1) identify the subject, verb, and object in the active sentence, (2) insert a form of "to be" and change the main verb to the past participle, and (3) reverse the subject and object. The document also notes that only sentences with transitive verbs can be changed to the passive voice and that the "by-phrase" does not always indicate who performed the action.