It is not a healthy habit staying up too late.这个句子为什么用staying up?用了什么语法啊?
问题描述:
It is not a healthy habit staying up too late.
这个句子为什么用staying up?用了什么语法啊?
答
It is not a healthy habit staying up too late.
这个句子为什么用staying up?用了什么语法啊?