“What about you?”之中的“about”是什么词性?

“What about you?”之中的“about”是什么词性? what about you?汉语是什么? more about的词性 What about teaspoon,if you please?的意思是什么? "About what colour du you like?"的回答是什么? What about you?和How about you?的区别? how about you与 What about you 的区别? what about you什么 what about you what about you 汉语 what's about you? And what about you?