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can have done什么意思
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推荐答案 2009-10-24
意思是 本来能做到的(但事实却没做到)
例句: i'am sorry that you didn't pass the exam.You can have passed it.(我很遗憾你没能通过这次考试,你本来是能过关的!)
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相似回答
must
have
done
,
can
have done
答:
can have done
可能做过某事(表示对过去发生的事的不确定的推测)如:He
must have been there yesterday.他昨天肯定去过那儿。He can have been there yesterday.他昨天可能去过那儿。
can
have
done
是
什么意思
用于什么情况???
答:
can have done
通常只用于疑问句和否定句;用于疑问句时表怀疑,用于否定句时表不确定
。例如:Can they have left so soon?难道他们这么快就走了?(表怀疑)He can’t have been to that town.
他不可能去过那座城市
。(表不确定)<><><> could have done 可用于肯定句、疑问句和否定句;用于...
can
have
done
和could have done的区别是
什么
?
答:
1.can+have+done
表示对过去行为的怀疑
,用于疑问句,译成“可能做过……吗?“2.could+have+done是虚拟语气,表示对过去事情的假设,意思是
本来能够做某事而没有做
。3.could (不能用 can) have done “表示“过去本能够做某事却未做。”注意:其否定形式 couldn't have done 没有虚拟语气的用法。4...
can
't
have
done
的用法
答:
can
have
done
can have done 通常只用于否定句和疑问句。用于否定句时表否定推断,推测肯定没做;用于疑问句时意为“难道真的做了吗”,表示怀疑。例如:
Can
he have done such a foolish thing? (= Is it possible …?)他会做这样的傻事吗?(表怀疑)He can't have taken it home.他不...
情态动词
have
done
是
什么
用法
答:
1、
can
have
done
的用法 can have done用于对过去动作的推测,表示“可能”,常用于否定句和疑问句。She can't have gone to work. It's Sunday.她不可能去上班,今天是星期日。She is two hours late. What can have happened?她已经晚了两个小时,可能会发生
什么
事情呢?-
Do
you think our ...
can
have
done
和 could have done有
什么
区别?
答:
could 委婉一些,更常用一些 could
have
done
还表示虚拟语气,与过去事实相反
can
have done 表示对过去某事的推测,“可能已经做某事”
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