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could have done
情态动词+
have
done
的用法?
答:
John may/might not
have
passed the exam; he looks very sad.约翰可能没有通过考试。他看起来很忧伤。注意:may/might have
done
表推测不能用于疑问句中。3. can/
could
have done 表推测一般用在否定句和疑问句中,表示不相信或怀疑的态度。Can/
Could
he have passed the exam?他可能通过了考试...
can't
have
done
的用法
答:
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.他不可能把它带回家了。(表不可能)
could
have done could have done 可用于肯定句、疑问句和否定句。用于肯定句既可以表示过去能够做而实际未做,有惋惜、遗憾...
could
have
done
sth 和must have done sth 的区别是什么
答:
微笑——阳光的感言:would
have
done
本来要做完成的事却因其被他事而耽搁, 注意重点放在时间.He would have done the painting by this time tomorrow.He would have done the painting if he
had
come earlier.
could
have done本来能够做的事却没做, 没有做完,有可惜,能力不足的感触心态 He ...
哪位能否解释下
couldhavedone
与wouldhavedone的用法区别
答:
语法上没根本区别 意义上的区别
could
have
done
是自己说自己应该完成某件事 would have done是别人说你应该完成某件事
区别
could
,might,would,should
have
done
答:
(1)
could
have
done
:可用于肯定句中,表示“可能已经……”之意,此外,还可以表示过去能做而没做的事,有一种对过去为付诸实施的事情的惋惜。He could have killed himself driving at a dangerous speed.You could have been more considerate.You could have done better, but you were too ...
情态动词加
have
done
是什么结构?
答:
John may/might not
have
passed the exam; he looks very sad.约翰可能没有通过考试。他看起来很忧伤。注意:may/might have
done
表推测不能用于疑问句中。3. can/
could
have done 表推测一般用在否定句和疑问句中,表示不相信或怀疑的态度。Can/
Could
he have passed the exam?他可能通过了考试...
have
done
的否定是什么?
答:
John may/might not
have
passed the exam; he looks very sad.约翰可能没有通过考试。他看起来很忧伤。注意:may/might have
done
表推测不能用于疑问句中。3. can/
could
have done 表推测一般用在否定句和疑问句中,表示不相信或怀疑的态度。Can/
Could
he have passed the exam?他可能通过了考试...
would/
could
/must
have
done
在虚拟语气中怎么用
答:
If...
had
done
主句的结构,由于情态动词没有过去完成时,而这个倒退又要求过去完成时,那么我们就在情态动词后的动词上想办法,动词变成过去完成时是had done,而前面有情态动词,要求接had原形,这样就变成了“情态动词+
have
done”:...
could
have done ...should have done ...would have done ...
虚拟语气中的would
have
done
与
could
have done结构 有什么 区别?什么...
答:
他只要再多等一分钟,我就会(能)和他一道走啦...两者皆可,但语意有点儿出入。If he weren't so upset, I would
have
brought him along.要不是他这么生气,我是会带他一块儿来的。... would 比
could
要更强调是“我的”选择
Had
I
had
enough money, I could have bought it wit...
情态动词加
have
done
表示过去 主语是单三时,have需要变为
has
吗?_百度...
答:
先看情态动词+
have
done
的用法结构:1.must + have done:用于肯定句,表示推测,意为“一定(已经)……”。2.can + have done:用于否定句或疑问句,表示推测,意为“可能(已经)……”。3.
could
+ have done:可用于肯定句、否定句或疑问句,表示推测、责备或遗憾等,意为“可能……”、“...
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