用英语翻译：你有什么事？

What's the matter?

你有什么事？
What can I help you? ----(客气的语气，适合对陌生人或顾客)

what's in your mind? ----(问对方可能有什么心事)

What's up? -------（口语：怎么啦?出了什么事?）

What can I do for you?

这是典型的中国式问话,
陌生人之间,应该说:can I help you?
如果是朋友之间,你可以说what's up?

What have you done?

What's up? What's the matter?