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must have been语法
must
have
been
后面加动词,是不是一定要用doing?可以用do吗?如果可...
答:
不可以用do,因为其后面是接ing形式的,表示现在完成进行时,如果跟do时,只能同
must
连用。如:They must
have
been
washing the clothes now.
Must
he finish his homework?
英语
语法
问题
must
have
been
prosperous是个啥时态
答:
must
have
been
prosperous:这个是情态动词的过去式,由于情态动词没有过去式,因此用must+have+been表示过去,即过去一定很繁荣。
must
have
been
在主句是一般过去式的宾语从句中变为must
had
been吗...
答:
也就是说
must
have
been
是正确的说法。而你所提到的must
had
been是不存在的。我明白你是为了强调是过去的时态,但是在
语法
中must have been 就可以表示在过去时态下的意义。例如:I thought he must have been at home last night.就表示:我认为他昨晚一定在家。希望我的回答对你有帮助!....
He
must
have
been
in the room last night.分析
语法
答:
"
must
have
been
/done"这种谓语结构用于对过去情况的一种肯定推测。原句意思:昨天晚上他一定是在那个房间里。
i
must
have
been
dreaming !的
语法
结构怎么分析呢?
答:
1 我肯定是一直在做梦。2, must 是情态动词,表猜测,意为“一定”,“肯定”。后面接动词原形
。3, have been dreaming 是现在完成进行时态,表示动作从过去某个时间开始,一直延续到现在,还有可能延续到将来。
must
have
been
doing
答:
must
have
been
... 那时一定是 can't have been... 那时不可能是 must have been doing意思是 一定一直都在做某事She is so tired .She must
has
been working all the morning.她很疲劳了她一定工作了一个早上。must have been doing 表示肯定的猜测 并且猜测这种动作,或者行为一直持续到...
I believe that, as long as paid there
must
have
been
harvested
答:
“there
must
have
been
”是“there be”句型,意思是:“有”,must是情态动词“一定”,must have been 是对过去情况的推测。所以“be”后面不是被动态,而是要加名词,收获的名词“harvest”正确的应该是“I believe that, as long as paid, there must have been harvest. ”...
It
must
have
been
searched.什么意思?
答:
它肯定已经被搜查了。本句
语法
点:情态动词表推测,情态动词+
have
done是对过去情况的推测,
must
口气较强,意为:肯定。注意:本句的否定形式为:It can't have
been
searched
英语问题
答:
must
have
been
后面要加"...ing" eg He must have been staying at home 这个句子有问题,因为不管怎样,前面已经有一个过去时,后面就必须是过去时,如果横线上填“was”或是这类的辅助动词,则后面的动词就必须是"...ing"/"...ed"。 因此,不管你填什么,按
语法
来说都是错误的。
新概念3中第一课 A puma at large中,
HAVE的用法
疑惑
答:
collector所有,所以用
must
have
been
in the possession of 。其实不管是过去还是过去的过去,都只能这样表达。must
had
been in the possession of 是错的,因为按照英语
语法
规则,情态动词后只能用动词原形, 该句中的must是情态动词,其后只能用动词原形have, 而不能用过去式 had....
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