be动词后面动词要用ing形式吗

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be动词后面动词要用ing形式吗be动词后面动词要用ing形式吗be动词后面动词要用ing形式吗ofcoursebe动词后面的动词形式有三种可能:-ing:现在进行时,I''mtryingtogivey

be动词后面动词要用ing形式吗
be动词后面动词要用ing形式吗

be动词后面动词要用ing形式吗
of course

be动词后面的动词形式有三种可能:
-ing:现在进行时, I'm trying to give you the right answer.
-ed:被动语态, I'm told that you don't know her.
to do:
1.表示按计划或安排要做的事。例如:
When are you to leave for home?你什么...

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be动词后面的动词形式有三种可能:
-ing:现在进行时, I'm trying to give you the right answer.
-ed:被动语态, I'm told that you don't know her.
to do:
1.表示按计划或安排要做的事。例如:
When are you to leave for home?你什么时候回家?
They said goodbye, little knowing that they were never to meet again.他们告了别,不知道以后再也不会见面了。
2.表示“应该”,相当于should, ought to。例如:
You are to report to the police.你应该报警。
3.表示“必须”,相当于must, have to。例如:
The letter is to be handed to him in person.这封信必须亲手交给他。
4.表示“想,打算”,相当于intend, want。例如:
If we are to be there before ten, we’ll have to go now.如果我们要在十点前到,我们现在就得走。
5.用于第一人称疑问句,表示征求对方意见。例如:
Am I to go on with the work?要我继续完成这项工作吗?
What are we to do next?我们下一步该怎么办?
6.用于否定句,表示“禁止”,相当于mustn’t。例如:
You are not to smoke in the reading-room.你不可以在阅览室里吸烟。
7.表示“可以,可能”,相当于may, can。例如:
The news is to be found in the evening paper.这条消息可以在晚报上见到。
8.were to do sth.用于if或even if / even though从句中,表示对未来的假设。例如:
If I were to tell you that I killed him, would you believe me?要是我告诉你是我杀了他,你会相信吗?
9.be to blame(该受责备,对某坏事应负责任)与be to let(待出租)两种结构中,用不定式的主动形式表示被动含义。例如:
Which driver is to blame for the accident?这事故是哪个司机的责任?
This house is to let.这房子要出租。

收起

素的。

ed或ing形式,ed表被动或过去,ing表主动或进行
eg:The football is stolen。(足球被偷了)
They are playing football。