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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。】
To
be
doing
在这里什么用法 和
to
do 有什么区别
答:
Have to be doing
正在不得不做……
have
to do 不得不要去做……
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。
请问“
have
to
be
done”是什么时态?其中的be为助动词吗?
答:
have to
可以看作情态动词,本身是一般现在时态,但表示将来;
be done
中的be是助动词,与done一起组成被动语态
have
been
to
do
什么意思?
答:
其中,on hand 原意指“手边,即将发生,随时准备”的意思,这里相当于“available”,experts
be
on hand表示专家们随时准备着,后面
to
不定式作补语。而现在完成时的几种形式区别如下:1、
have
been
doing
表示从过去某个时间现在一直在做。如:He
has
been preparing the examination since last week....
have
后面+
to
do, do ,还是
doing
?
答:
have
后面+
to
do, do ,
doing
这三种都是很常见的。1.have to do表示“不得不做某事”,例句:I have to do some laundry this evening.我今晚不得不洗衣服。2.have sb. do表示“让某人做某事”(注意:have to do表示的是自己不得不做某事,而have +do这个句式一般是have sb. do,就是让...
have
been
to
和 have been
doing
和have been done?谁能告
答:
I
have
been
to
Shanghai for several times.If I
had
known that earlier, I wouldn't have been to the dining hall, either.have been
doing
. 过去到现在一段时间一直在做,表示状态 Biological systems have been doing this for billions of years.生物系统亿万年来一直都是这样。I have...
英语中
to
be
doing
用法到底表达什么意思?
答:
正在进行"的时候, 就成
to
be
doing
了 This is what I want to be doing now. 和 This is what I want to do now.这两句表达的意思是一样的, 只不过用be doing 这种更强调"我现在就想要做"(也就是: "这才是我现在想要正在做的事情", 还是一个进行时)...
have
to
be
done是什么意思
答:
1、
have
sth
to
be
done,表示说话的人并非是这个动作的执行者,而是让别人去做.2、have sth to
do
主语和动作的执行者都是一个人 ,举个例子 :I have something to be repaired.我有一些东西需要被(别人)修理.别人去修理,而非主语I I have something to repaired.我有一些东西要去修理(我...
to
have
been
doing
的用法?
答:
to
have
been
doing
是动词不定式的完成进行式,表示与谓语动词同时并持续下去。He pretended to have been listening to the teacher.他假装一直在听老师讲课。
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