情态动词+have done用法归纳

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情态动词+have done用法归纳

情态动词+have done,可用来描述对某事的客观性认可,强调一件事在过去是完成的,但不强调完成的时间。

例如:

(1) He must have stolen the money. 他肯定偷了钱。

(2) She could have finished her essay an hour ago. 她一个小时前就可以完成作文了。

(3) The thief should have been caught by now. 小偷现在应该被抓住了。

(4) They could have been more careful. 他们本可以更加小心。