好像都是用来修饰人的吧
因为第一句中可以说成 you are kind
所以可以用of.
而第二句中就不能说成是 he is possible.
所以用for.
表示对他来说在十小时内完成是不可能的
不知道我的回答楼主会不会满意呢
It is kind of you to help me.
3个回答
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