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mustn't have done的用法
mustn't
have
done和can't have
done的
区别最好有例子
答:
He mustn't have done this project. 他必定没有完成这项工程。但是一般不这样用,
而是通常用于反义疑问句
,如:He must have done this project, hasn't he?他一定已经完成这项工程 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...
英语中存在
mustn't
have
done的
形式吗
答:
a.can;can
't
have
thrown b.must;must have thrown.c.must;needn't d.can;must throw 答案为a.第一个句子是一个疑问句而且表示可能性的推测,所以只能用情态动词can或could,第二句的答语表示对过去的推测,所以用can't have
done
.请看常见的“情态动词 + have + 过去分词”
的用法
:一、“...
mustn't
have
done和can't have
done的
区别最好有例子
答:
“
mustn't
have
done
”没有这种搭配,这是一定要记住的!只有mustn't do sth.指的是明令禁止做某事
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。
虚拟语气
答:
1. must
have
done
表示对过去的推测:That glass must have been broken by Xiao Ming.(打碎 这个动作发生在过去,所以不能光说must break)。
mustn't
have done 不常见。2.needn't have done 表示做了本不必要做的事情。如:You needn't have called him then.(你不必在那个时候给他打电话...
mustn't
have
done和can't have
done的
区别最好有例子
答:
A.can;can
't
have
thrown B.must;must have thrown.C.must;needn't D.can;must throw 答案为A.第一个句子是一个疑问句而且表示可能性的推测,所以只能用情态动词can或could,第二句的答语表示对过去的推测,所以用can't have
done
.请看常见的“情态动词 + have + 过去分词”
的用法
:一、“...
有无must not
have
done
?何意?
答:
mustn't
的意思是禁止 ,mustn't
have
done
是错误的语法表达。如果想表达“本不应该做某事而做了”通常用shouldn't have done 但是有must have done ,表示对过去发生的事情的猜测
有
mustn't
have
done
这个结构么?表示什么?
答:
done
表推测
的用法
,表示对过去某事的肯定猜测,译为过去肯定做了某事,其can /could 来表示或疑问形式必须用can /could 来表示 例如 Since the road is wet ,it must
have
rained last night 只有 He can't have missed the way ,i drew him a map 完全没有你说的那种用法,不存在
mustn't
...
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...
must
have
done的
反义疑问句
答:
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’
t
do he must understand that we mean business.you must be hungry ...
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