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have to be doing
have
to
be
doing
为什么要加个be?这是什么时态?
答:
因为
to
后面要用原形,而
doing
不是动词原形,故加
be
,根据
have
判断这是一般现在时。【希望采纳。】
这是新东方《英语语法新思维中级》的几段,
have
to
也可以表示推测?它还 ...
答:
如果是一般推测,用
have to
或者has to(主语为单数第三人称);如果是对过去的推测,用had to;如果是对未来的推测,用will have to;如果是对正在进行的事件推测,用have to
be
doing
或者has to be doing,而不是having to。
have
done
bedoing
是什么时态
答:
这里有两个概念: 一,
have
to
do 是谓语动词,是一般现在时态。 二,to
be
done 是非谓语动词,是动词不定式的被动语态。 这两个结合到一起就是上面的样子。 扩展资料 例句:I have a rule: think of
doing
one thing, it must be done, and must be done thoroughly.我有个原则...
has
to
be
done是什么时态
答:
has
to
be
done是一般现在时。谓语动词是has。1. 短语翻译:必须要做的;必须被做的。2. 分析这个短语:
have
to
do
sth 的三单形式 has to,动词词组 be done,和to构成不定式形式,被动式。3. 重点短语:have to,必须;不得不;只好;其它词形:三单形式 has to;过去式
had
to;将来时 ...
to
do,to
be
doing
,to
have
done区别
答:
三者的主要区别为动作的完成状语不同:1.
to
do强调去做,但还没做,例:I
have
something to do tomorrow.明天我有些事情要去做.2.to
be
doing
强调正在做,例:Everyone seems to be doing it.每个人似乎都在这样做。3. to have done强调的是动作为完成时,例:They ought to have done ...
todo,
tobedoingtohave
done区别
答:
都是动词不定式,但是
to
do是动词不定式的一般式;to
be
doing
是动词不定式的进行式;to
have
done是动词不定式的完成时。1,to do表示一般情况下要去干什么,时间可能是过去、现在、或是将来。是笼统的,不强调具体什么时间。例如:It all depends on what you decide to believe.这一切都取决于你...
非谓语动词里的
to
do 为什么会 to
be
doing
这样的进行时啊
答:
非谓语动词根据需要,也有其时态。
to
be
doing
表示该动作正在进行;也有完成时,to
have
done,表示在谓语动作之前完成,还有被动语态,to be done表示被动。如:Everyone seems to be looking at him. 每个人似乎都在看他。(表示look 这个动作正在进行。)It does not seem to have done as much ...
to
be
doing
和to
have
been doing都是什么意思???(求助中……有这个...
答:
to
be
doing
正在做某事 (其实就是现在进行时)to
have
been doing过去正在做某事,现在还在做(通常表示延续)当实际用的时候,to没有任何实际意义,所以这两个结构可以简写成:be doing,have been doing.例:I'm singing(我在唱歌)She
has
been playing the piano for 5 years.(她已经弹了5年钢琴).(...
to
be
doing
和to
have
been 求助中
答:
to
be
doing
正在做某事 (其实就是现在进行时)to
have
been doing过去正在做某事,现在还在做(通常表示延续)当实际用的时候,to没有任何实际意义,所以这两个结构可以简写成:be doing,have been doing.例:I'm singing(我在唱歌)She
has
been playing the piano for 5 years.(她已经弹了5年钢琴).(...
All things ___,the planned trip will
have
to
be
called off A.cons...
答:
All things ___,the planned trip will
have
to
be
called off 。A.considered 空格填considered,意思是:考虑到所有情况,计划不得不取消。句子里已经有了“谓语”,因此非谓语动词不再单独作谓语,而只能“衬托”句子,但仍然保留了动词某些特征,可以充当各种成分。常见的形式有:动词不定式、动名词...
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