The document discusses the future perfect tense, which can be formed with "will have" or "be going to have" plus the past participle. It provides examples of sentences using the future perfect, such as "You will have perfected your English by the time you come back from the U.S." The future perfect is used to talk about actions that will be completed before a certain time in the future. It also lists a bibliography with a website about the future perfect tense.