比如说I am playing football. 和I playing fottball .哪个对为什么

比如说I am playing football. 和I playing fottball .哪个对为什么
我老师说形容词和名词后面要加be动词对吗?那么哪些是不用加be的?

AODPGF 1年前已收到1个回答举报

HotGirlTeam 幼苗

共回答了12个问题采纳率：100% 举报

行为动词都不加be呀
如：i go home
但如果是用进行时,则要.i am going home.
be是系动词

1年前追问

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进行时要be动词那过去式呢？

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如果表示过去进行，be用过去式如：i was going home when i heard the strange sound。

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你能帮帮他们吗

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比如说I am playing football. 和I playing fottball .哪个对 为什么

比如说I am playing football. 和I playing fottball .哪个对为什么