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mustnt have done
mustn't
have
done
和can't have done的区别最好有例子
答:
can't have done:(1) 其实,是
must have done
的否定形式!也就是说,通常不说 mustn't ...(2) 表示推测,比较肯定,是说话人根据对某人某事平常的了解,不可能发生。He can't have done that for he is not that kind of man. 跟读 他不可能这么做的,因为他不是那种人。
mustnt
have
done
与cant have done区别
答:
mustn
't 地意思是“不准许、]禁止”,mustn'
t have done
意思是“绝对不允许已经做过、绝对禁止做过”,不表示推断。因此与 can't have done 没有直接关系。
mustnt
have
done
与cant have done区别
答:
1.情态动词must+
have
done
只用于肯定句中,表示对过去发生的事情或状态进行肯定的推测,意为”过去一定做过某事”.如:1)It must have rained last night,for the road is all wet.昨天晚上一定是下雨了,因为路还湿着.2.情态动词can/could可用于否定句中,即can't have done/couldn't have do...
mustnt
have
done
答:
一定不能做某事~是在虚拟语气中的 否定形式~
英语高手进!!
答:
must have done
必须用于肯定句中 相当于说没有mustn't
have done
这个表达 当要表示否定时,只能用can't/couldn't have done 表示绝不是。。
He speaks English with a strong 单选
答:
t
have
been是猜测的语气.A.can't have been中文的解释是一定不会 答案是A 因为this代表It may not be fine tomorrow in which只是作为一个名词子句,所以不合适 that更不可能,因为It may not be fine tomorrow,in ---case we will have to put the trip off.是在说"这"件事,不是那件 ...
must和can有什么区别
答:
没什么特别大的区别!都是情态动词.后面要跟动词原形!MUST是必须的意思,CAN是能够的意思,就这点区别.用法上没区别!
英语单项选择题?
答:
A. mustn't go B. wouldn't go C. oughtn't go D. shouldn't
have
gone 正确答案 D 答案解析 原句意思“她手头还有这么多工作,昨晚本不应去参加舞会”,对过去情况的虚拟用“should have
done
”结构。D表示本来不该去但还是去了。该题考察情态动词对过去情况的推测。句中last night 提示...
The room is still in a mess;it ___ thoroughly cleaned.
答:
应该选A,否定推测,语气不很肯定时常用may/might not或could not ,意为“可能不,也许不”;语气较强时用can’t,意为“根本不可能/不会“A can’t
have
been 不可能已经被...B的shouldn't 有不应该的意思
We ___
have
proved great adventurers, but we
答:
~"may
have
done
" 表示对过去发生事情的猜测, 意思是 "或许曾经做过某事"。~本句的意思是 “我们也许未曾证明过伟大的冒险活动, 但是我们已经完成了过去十年中进行的最伟大的进军”。[其他选项]A. needn't 表示 "没有必要/不必"C. shouldn't 表示 "不应该"D. mustn't 表示 "不准许" (...
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