为什么老友记中乔伊老是说how you doing,可是事实上不是应该是how are you doing?吗

How are you doing How are you doing? 翻译how are you doing? how are you ledies doing how are you doing翻译 Hello,how are you doing? how are you doing对么 how are you doing 还是how you doing? how you doing为什么用doing啊 《老友记》中Joey常说的一句话：“How you doing? 别人说"I hope you are doing well.";"How are you doing?" 怎么回答? how are you doing和how are you的区别