be动词-英语问题

是不是be动词 后面接的动词要加ing?
am is are was were been will be

麻烦举两个been和will be的例子

be+动词ing--构成进行时态
I am doing my homework.
He was singing at 9 o'clock last night.
be+动词过去分词--被动语态
It was made in 1990.

am is are was were been will be,这是be在不同时态中的形式
been用于完成时态,He has been here for 20 years.
will be用于将来时态,He will be happy again.

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也就是说 be动词后面动词一般有两种情况,一种是加ing 一种是加ed
前者是一般进行时态或过去进行时态,后者是过去时态?

追答

+ing构成进行时态,包括过去进行时态,现在进行时态,将来进行时态,过去将来进行时态
+ed(过去分词)构成被动语态,可以是各种时态下的被动语态
动词时态和动词语态要分清啊!

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第1个回答  2011-10-25
be + v.-ing:表示进行时态
be + v.-ed:表示被动语态
I have been doing it for three hours.
He will be fired.(他将被解雇)
第2个回答  2011-10-25
I have been finished my homework
you will be good at english
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