英文日常回答how is it going?how are you?whats up?how are you doing

英文日常回答how is it going?how are you?whats up?how are you doing how are you doing和HOW IS IT GOING的区别 请问老师,How is it going?=How are you( ) ( how is it going会不会等于How are you how is it going是什么意思,应该怎么回答?和how are you 有什么区别? How are you doing How are you doing? How are you going? How are you going how are you doing怎么回答 how are you going to prepare for it怎么回答 how are you going there?怎么回答?