问题描述：
Doing sports does good to/for us.Doing sports does good to/for us.
Doing sports does good to/for us.Doing sports is good to/for us.这两个句子,一个有be动词,一个没有,它们的差别在哪里啊?
Doing sports does good to/for us.Doing sports is good to/for us.这两个句子,一个有be动词,一个没有,它们的差别在哪里啊?
问题解答：
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