be动词后加动词什么形式
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动词ing
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be动词后面的动词形式有三种可能:
①-ing:现在进行时,I'm trying to give you the right answer.
②-ed:被动语态,I'm told that you don't know her.
③-to do:
1、表示按计划或安排要做的事.例如: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。
①-ing:现在进行时,I'm trying to give you the right answer.
②-ed:被动语态,I'm told that you don't know her.
③-to do:
1、表示按计划或安排要做的事.例如: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。
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