The passage discusses the passive voice in English. It notes that the passive voice is used when the actor is unimportant and the action itself is emphasized. It provides examples of when the passive is used with and without an agent expressed. The passage also explains how to change sentences from the active to passive voice and describes the forms of the present simple and past simple passive using the verbs "to be" and the past participle. It stresses the importance of knowing irregular verbs.