大师作文网They must have been to the USA,have not they?与He must have b
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They must have been to the USA,have not they?与He must have been to the USA,was not he?区别
最好讲讲为什么句子主语一换,must反义疑问句就不一样了?
最好讲讲为什么句子主语一换,must反义疑问句就不一样了?
你好,你没有搞懂这些句子的用法:
在这两个句子中,因为都没有时间状语的修饰,所以句子发生的时间不确定,答案也不确定,请你看以下的句子,
They must have been to the USA,haven't they?
He must have been to the USA,hasn't he?
这两个句子都是对的,因为都没有时间状语,可以翻译为:
他(们)到过美国,是吗?
但是加一个状语则变为以下的两个句子:
They must have been to the USA last year,weren't they?
He must have been to the USA last year,wasn't he?
因为,这两个句子都表示去年去了美国这个具体的时间发生的事,所以要用一般过去时态.
又如下面的这个句子:
It must have rained last night,didn't it ?
It must have rained ,hasn't it?
在这两个句子中,因为都没有时间状语的修饰,所以句子发生的时间不确定,答案也不确定,请你看以下的句子,
They must have been to the USA,haven't they?
He must have been to the USA,hasn't he?
这两个句子都是对的,因为都没有时间状语,可以翻译为:
他(们)到过美国,是吗?
但是加一个状语则变为以下的两个句子:
They must have been to the USA last year,weren't they?
He must have been to the USA last year,wasn't he?
因为,这两个句子都表示去年去了美国这个具体的时间发生的事,所以要用一般过去时态.
又如下面的这个句子:
It must have rained last night,didn't it ?
It must have rained ,hasn't it?
They must have been to the USA,have not they?与He must have b
They must have been here the day before yesterday,----------
They must have been enjoying themselves there,or they _____
They must have been enjoying themselves there,otherwise they
must not have been;could not have
He must have been sent to the hospital 改反意疑问句
It must have been they who picked the flowers.这里的强调句的must ha
they must have连读
It must have been they who gave the signal.为什么是they而不是them呢?
Do they -------return all the books?A.has to B.must C.have t
must 与have to
(They must have been there yesterday ,______they?)能用"weren't