T:  Can you play the violin?
S1:  No, I can't.          S2:  No, I can't. .But I can play chess. I often play chess with my father.

T:  Did you do your homework yesterday?
S1:No, I didn't.      S2:  No, I was too tired. but I'm going to do my homework this afternoon.

为什么有的学生.... 有的......

有办法吗?

[ 本帖最后由 洛尘 于 2006-11-12 13:09 编辑 ]

这个看不明白