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must have done否定
mustn't
have
done
和can't have done的区别最好有例子
答:
首先
have
done
表示已经做过,这点就不用谈了.can't have done 表示以前不可能做某事.例句 ---Where___Margaret have put the empty bottles?---She___them away.They
must
be somewhere.A.can;can't have thrown B.must;must have thrown.C.must;needn't D.can;must throw 答案为A.第一...
must
have
done
是什么意思
答:
must
+
have
done
过去一定做了某事(对过去的事情一种肯定的猜测、推测)。如:He said I must have done something bad to deserve it.他说我肯定是罪有应得。That car must have cost a packet.那辆汽车一定花了一大笔钱。I think we must have taken a wrong turning somewhere.我觉得我们一定...
shouldhavedone和
musthavedone
答:
should
havedone
表示“过去本应该做某事却未做。”其
否定
结构shouldn'thavedone表示“过去本不该做某事却做了oughttohavedone表示“过去本应该做某事却未做。”其否定结构oughtn'ttohavedone表示“过去本不该做某事却做了。”
could/might/may/would/
must
/should
have
+过去分词
答:
1.
must
have
done
表示对过去某事的肯定猜测,译为:过去肯定做了某事。不存在 mustn't have done 的形式。其
否定
或疑问形式须用 can(could) 来表示. 例如:Since the road is wet, it must have rained last night. 既然路是湿的,那昨天晚上肯定下雨了。He can't have missed the way. I...
情态动词加
have
+
done
的用法
答:
can
have
done 否定
、疑问中表推测:He can't have slept with the noise. (把握性极大的推测)Can he have gone to his office? (提出某种可能性)
must
have done 想必 / 准是 / 一定: It must have rained last night, for the road is quite muddy. (把握性极大的推测)注:否行...
请问"
must
"的
否定
形式是不是不能表推测? 有木有"mustn't
have
done
...
答:
1.
must的否定
形式表示“禁止/不许”,不能表示推测;mustn't
have
done
sth此种形式的确不存在,must have done sth“一定做过某事”的否定形式是can't/couldn't have done sth,意思是“不可能做过某事”。2.推测只是一种语言现象的目的,即用某语法结构来表示说话人的推测;而虚拟语气则是一种...
must
have
done
,must do,can't have done,can't do的区别
答:
must
have
done
对过去发生的动作很有把握的肯定推测 must do“必须做”,含有一种命令的口吻,语气强 can't have done对过去发生的动作很有把握的
否定
推测,意为“不可能做了”can't do“不能做”表示不给予许可,语气没有must do强
must
have
done
的反义疑问句
答:
情态动词+动词完成时,即情态动词+
have
+
done
.表示对过去的行为或动作进行推测,评论或者判断.1.
must
have done.表示对过去某事的肯定猜测,其
否定
或疑问形式都用can/could来表示。例如:since the road is wet,it must have rained last night.2;当然对现在发生或者将来发生的事情,要用must do表示猜测,否定为can’...
must
have
done
是什么意思?
答:
以下为我的回答,希望能帮到您:"
must
have
done
" 是英语中的一种情态动词结构,用于表示过去发生的事实或行为是非常肯定的推测或假设。它由情态动词 "must" 和动词的完成时态 "have done" 组成。这个结构的用法可以用来推测过去发生的事情,但没有直接的证据或确切的时间点。通常在使用 "must have ...
could
have
/might have /
must
have/should have都有什么区别
答:
He didn't hear the phone. He
must
have
been asleep.2. can(could)have
done
表示对过去的时间内可能发生的事情的猜测,can have done 一般只用于
否定
句和疑问句。could have done 还...
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shall have done
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