“情态动词+have done”表推测一览表 情态动词+ have done 用法 例句 must have done 一定已经做了 They must have finished their work
can’t have done 不可能已经做了 They can’t have finished their work could have done 可能已经做了或本来可能做但未做 You could have used my computer because I didn’t use it
may have done 也许已经做了 They may have finished their work
might have done 也许已经做了或本来可以做但未做 You might have used my computer because I didn’t use it
Should/ought to have done 本来该做但未做 You Should have studied hard
need not have done 本来不必做但做了 You need not have gone out
would rather have done 过去宁愿做但未做 I would rather not have gone there
would like to have done 过去想做但未做 I would like to have seen the film
had better have done 当时最好做了某事 You’d better have gone there
“情态动词+be doing”表推测一览表 情态动词+ be doing 用法 例句 must be doing 一定正在做 They must be watching TV
