9.将来完成时1

将来之前（可能是过去、现在或将来）的动作持续到将来
We will have taken five exams by next Friday.到下个星期五之前，我们将完成五门考试。

1、“我们”可能是昨天开始考试的，比如说：
We started our exam yesterday and we will have taken five exams by next Friday.

2、可能是今天开始考试的，比如说：
We have started our exam today and we will have taken five exams by next Friday.

3、也可能是明天才开始考试，比如说：
We will start our exam tomorrow and we will have taken five exams by next Friday.

三种思维用法

• 延续事件
  表示在将来某一时刻之前开始的动作，一直延续到该时刻，并可能继续延续下去

I will have learned 8,000 words by the end of next year.到明年年底之前，我就将学过8000个单词了

 

• 重复事件
  表示在将来某一时刻之前开始的动作，并在该时刻之前的一段时间内重复发生

 

By five o'clock this afternoon the spaceship will have traveled eleven times round the world.到今天下午五点钟之前，这艘宇宙飞船就将绕地球飞行11次了。

 

• 单一事件
  表示在将来的某一时刻之前开始的动作，到该时刻之前已经完成。

We will have finished our exam by the end of next week.到下个周末为止，我们就将完成 考试了。
I will have finished my homework by the time I go out on a date tonight.到我今晚出去赴约的时候，我将已经做完作业了。