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can't have done
can't
have
been和can' have
done
有什么区别
答:
can t
have
done
表否定推断,推测肯定没做。 The measurement couldn t have been wrong. 测量不可能出错了。 He can t have been to that town. 他根本不可能去过那座城市。 He
can't
have taken it home. 他不 “can’t have done”表否定推断,推测肯定没做。<><><> The measurement...
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
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...
can't
be和can't
have
done
答:
两者都表示推测,但不同的是对推测的时间有所限制。
can't
be/do 表示对现在的推测,例如:I saw Lily just now. It can't be true,she
has
gone to Beijing yesterday.can't
have
done
则是对过去状态的推测。这方面的推测你可以重点复习情态动词,一般语法书都有。希望满意哈!
can't
have
done
与could't have done的区别
答:
couldn't 较
can't
委婉, 表示多半是由客观原因造成的不能做,而can't 的主观色彩相对浓一些.
can
’t / couldn’t
have
done
什么意思?
答:
must do 表对现在、将来肯定猜测 must
have
done
表对过去肯定猜测
can't
do 表对现在、将来否定猜测 can't have done 表对过去否定猜测,就是他不可能做过某事
she
can't
have
written to me , or ___ the letter by now
答:
他不可能给我写信了。
can't
have
done
不可能, 表示对过去的猜测。or I'd have got the letter by now. = or I would have got the letter by now 否则的话,我现在已经收到信了。否则的话,也就是 如果她给我写了信的话。这里是与过去 事实相反的虚拟条件句, If sb.
had
done.....
情态动词+
have
done
是什么时态?
答:
没有固定时态,一般表示推测,有以下几种用法: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,用于疑问句,译成“可能...
情态动词+
have
done
的用法
答:
1、“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。You must have been mad to speak to the servant.你和仆人说话,一定是发疯了。2、“
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”。Mary can't have stolen your money.She...
mustn
't
have
done
是什么意思?
答:
楼主,您好详细点就是说:1)mustn't
have
done
可意为“本不必”,即已经做了某事,而实际上不必要2)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....
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