what can I do for you 和can I help you 有什么区别

what can I do for you 和can I help you 有什么区别 what can i do for you与 can i help you的回答有什么区别? How can I help you?与What can I do for you?的区别 What can I do for you?和Can I help you?是不是近义句? 如何回答can I help you?与what can I do for you? Can i help you?用先回答yes吗 what can i do for you How can I help you 和 What can I help you 的区别 I will do what I can to help you .what I can 作什么成分啊 what can I do for you?I 什么a skirt what can i do for you what can i I’ll do what i can do help you. what can i do for you?（同义句）____ ____ i help you?