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might have done
could
have
done
到底是对过去的推测 还是 虚拟语气 能做到而没有做到...
答:
情态动词+
have
+
done
是历年高考的重点和难点之一,现将其用法总结归纳如下:一、 “must+have+done”表示对过去事情的肯定推测,译成“一定做过某事”,该结构只用于肯定句。二、 “can't+have+done”表示对过去事情的否定推测,译成“不可能做过某事”。三、 “can+have+done”表示对过去行为的怀疑...
情态动词+
have
done
是虚拟语气吗?
答:
这个不一定是的。它可以有两种情况的。情态动词+
have
done
:第一,表推测;第二,表虚拟。1.edn't /shouldn't +have done 表对过去的推测,译为“本不需要、本不应该做...”2.can't have done 表对现在的推测。译为“不可能...”3.mustn't have done 表对过去的推测。译为“一定不会.....
could
have
/
might
have /must have/should have都有什么区别
答:
3
may
(
might
)
have
done
表示对已经发 生的事情的不太肯定的推测,意为“可能已经,或许已经”。例如: If we
had
taken the other road , we might have arrived earlier.4needn”t have...
情态动词+
have
+
done
,表示推测与表示虚拟。 我只问张达人,网上的资料都...
答:
情态动词 +
have
done
用来表示对过去情况的虚拟,用于不同的句式。1、would、could、
might
、should 和 ought to 用在条件虚拟句中表示不同的意思,如:They would have been killed if the car
had
gone over the cliff. 如果汽车当时翻到悬崖下, 他们早就丧命了。(would表示会有某种倾向性)They...
may
和
might
之间时态的区别?L19笔记
答:
You
may
eat after everyone is seated. 大家就座后你就可以吃了。He may be busy now. 他现在可能忙。2 may
have
done
sth. “可能做某事了”(动作可能已经发生了)It's nine o'clock now. He may have come. Let's meet him. 现在是九点钟。他可能已经来了。让我们迎接他。
might
有...
mustn't
have
done
和can't have done的区别最好有例子
答:
They
may
not
have
known it beforehand.You
might
have read about it in the papers.四、“need + have + 过去分词”表示过去做了不必做或不需要做的事情,或过去做某事纯属多余.如:Need they have
done
it last week?I needn't have bought so much wine—only five people came.五、“...
can't
have
done
是什么意思?
答:
couldn't
have
done
(可能没做过)是
may
have done(有可能做过)的否定形式。一般认为can't have done有80%以上的把握.而couldn't have done则委婉的多,只有50%左右的把握.must do /can't do一定,肯定80%把握。may/could do/couldn't do有可能50%把握。
might
do/mightn't do也许大概差不多30...
怎样比较can,
may
,
might
, must,
have
to
do
和have to
答:
6.情态动词+
have
+过去分词 (1)
may
(
might
) have +
done
sth, can (could) have + done sth表示过去,推测过去时间里可能发生的事情。(2)must have +done sth,对过去时间里可能发生的事情的推测,语气较强,具有"肯定","谅必"的意思。(3)ought to have done sth, should have done ...
mustn't
have
done
和can't have done的区别最好有例子
答:
They
may
not
have
known it beforehand.You
might
have read about it in the papers.四、“need + have + 过去分词”表示过去做了不必做或不需要做的事情,或过去做某事纯属多余.如:Need they have
done
it last week?I needn't have bought so much wine—only five people came.五、“...
请问could not
have
done
/
might
not have done可用于虚拟语气中吗_百度...
答:
可以 if you
had
taken my advice earlier, you could not
have
wasted so much time.但多用于推测
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