【我们爱学习】英语四级知识点

交通港2020-03-25 14:58:14

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英语四级知识点

 

时态

1)现在完成进行时态(have/hasbeen+-ing分词构成):动作或状态从过去某时开始,继续到现在,可能继续下去,也可能刚刚结束.

I’ve been writing letters for an hour.

I’ve been sitting in the garden.

 

2)过去完成进行时(由had been + ing分词构成): 过去某个时刻以前一直在进行的动作

I’d been working for some time when he called.

We had been waiting for her for two hours by the time she came.

 

3)将来完成进行时: 将来某个时刻以前一直在进行的动作.

By next summer, he will have been working here for twenty years.

In another month’s time she’ll have been studying here for three years.

 

4)将来完成时(由shall/will have + 过去分词构成): 将来某时已发生的事.

I shall have finished this one before lunch.

They’ll have hit the year’s target by the end of October.


本期的四级考试知识点到这里就结束啦,我们下期再见!

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