将来完成时.ppt

将来完成时将来完成时??将来完成时用来表示在将来某一时间以前将来完成时用来表示在将来某一时间以前已经完成或一直持续的动作经常与已经完成或一直持续的动作经常与 before+ before+ 将来时间或将来时间或 by+ by+ 将来时间连用,也将来时间连用,也可与可与 before before 或或 by the time by the time 引导的现在时的引导的现在时的从句连用。从句连用。 1 1将来完成时的构成将来完成时的构成??将来完成时的构成是由将来完成时的构成是由"shall/will + have + "shall/will + have + 过去分词过去分词" "构成的。构成的。?? Before long he will have forgotten all Before long he will have forgotten all about the matter. about the matter. ??不久他就会全然忘记这件事的。不久他就会全然忘记这件事的。 2 2 He is somebody now. He will not have He is somebody now. He will not have remembered his old classmates. remembered his old classmates. ??他现在是一个有身份的人了,他可能不会记得老他现在是一个有身份的人了,他可能不会记得老同学了。同学了。?? Will you have known Kevin for 10 years Will you have known Kevin for 10 years next month? next month? ??到下个月你认识凯文该有到下个月你认识凯文该有 10 10 年了吧? 年了吧? 3 3将来完成时的用法将来完成时的用法??1 1表示在将来某一时间之前已完成的动作, 表示在将来某一时间之前已完成的动作, 并往往对将来某一时间产生影响。并往往对将来某一时间产生影响。?? We shall have learned 12 units by the We shall have learned 12 units by the end of this term. end of this term. ??到这个学期末,我们将学完到这个学期末,我们将学完 12 12 个单元。个单元。?? By the time you get home I will have By the time you get home I will have cleaned the house from top to bottom. cleaned the house from top to bottom. ??你到家之前我将把房子彻底打扫一遍。你到家之前我将把房子彻底打扫一遍。 4 4 2 2表示推测,相当于表示推测,相当于"must have done" "must have done" 结结构。构。?? You will have heard of this, I guess. You will have heard of this, I guess. ??我想你已经听说过这件事了。我想你已经听说过这件事了。?? I am sure he will have got the information. I am sure he will have got the information. ??我相信他一定得到了这个信息 我相信他一定得到了这个信息 5 5 3 3 将来完成时通常与: 将来完成时通常与: ““by+ by+ 将来时间将来时间””和" 和" by the time by the time that that "结构连用"结构连用??。。例如: 例如: ①①By the year 2050, scientists By the year 2050, scientists probably will have discovered a cure for probably will have discovered a cure for cancer. cancer. 到 到 2050 2050 年,科学家们可能已经找到了治愈癌年,科学家们可能已经找到了治愈癌症的方法。症的方法。②②By the time you arrive in London, By the time you arrive in London, we will have been staying in Europe for we wi