什么是将来完成时
将来完成时是英语动词的十六种时态之一,用来表示将来某一时间以前已完成或一直持续的动作。经常与before+将来时间或by+将来时间连用,也可与before或by the time引导的现在时的从句连用。
将来完成时的构成
shall(第一人称)/will(第二、三人称)+have+过去分词(done)。
当动词be作谓语时,表现将来完成时的形式为will have + been
肯定句
I He She It You We You They + will + have + finished
否定句
将来完成时的否定句,否定词not是加在will之后。如:
She will not(won't)
一般疑问句
特殊疑问句
将来完成时的用法
1、状态完成:表某事到将来某时为止,一直持续的状态。如:
They will have been married for 20 years by then.
到那时他们俩结婚就满20年了。
We will have been married a year on June 25th.
到6月25日我们俩结婚就满1年了。
2、动作完成:表某事到将来某时为止动作已完成或另一个动作已对动作产生影响。
You will have reached Shanghai by this time tomorrow.
明天这个时候你就到达上海了。
By the time you get home, I will have cleaned the house from top to bottom.
你到家之前我将把房子彻底打扫一遍。
We shall(will) have learned 12 units by the end of this term.
到这个学期末,我们将学完12个单元
3、表示推测:相当于"must have done"结构。
You will have heard of this, I guess.
我猜你已经听说过这件事了。
I am sure that he will have got the information.
我相信他一定会得到这个信息。