How are you?How do you do?How are you doing?都是问候语这几个之间有什么区别啊

How are you?How do you do?How are you doing?都是问候语这几个之间有什么区别啊 How are you?与How do you do?和How are you doing?的区别是什么? How are you ,How do you do ,Nice to meet you,它们之间有什么区别没? HOW DO YOU DO与HOW ARE YOU的区别? how do you do 和how are you 的区别 "How do you do"与"How are you"的区别 How do you do!和How are you?的区别 how do you do和how are you有什么区别? how do you do和how are you doing的区别 how do you feel 和how are you 有什么区别 How do you feel now?How are you feeling now?有什么区别? How are you ,and,How are you doing now有什么区别