1) 构成will / be going to do sth. 2) 概念 a. 状态完成：表示某事继续到将来某一时为止一直有的状态。 b. 动作完成：表示将来某一时或另一个将来的动作之前，已经完成的动作或一获得的经验。 They will have been married for 20 years by then. You will have reached Shanghai by this time tomorrow
热心网友
有点头晕，怎么都是一样
热心网友
将来完成时：1）构成：will+have+动词过去分词2）概念：将来完成时表示在将来某一时间之前完成的动作，并往往对将来某一时间产生影响。它常与表将来的时间状语连用。 I will have finished writing the letter by five o'clock。 He will have forgotten all about the matter before long。3)有时可与ever,never,soon等时间状语连用。如： Will they ever have done their homework? Will you soon have finished talking with Tom?4）可与时间或条件状语从句连用。如： If you come at seven o'clock, I will not yet have finished dinner。
热心网友
11.17 将来完成时 1) 构成will / be going to do sth. 2) 概念 a. 状态完成：表示某事继续到将来某一时为止一直有的状态。 b. 动作完成：表示将来某一时或另一个将来的动作之前，已经完成的动作或一获得的经验。 They will have been married for 20 years by then. You will have reached Shanghai by this time tomorrow.