如果别人对你说：How are you?
Fine, thank you. And you?(书本回答)
How are you?/How are you doing 基本当Hello/Hi来用，直接打招呼。
在英语国家，特别在美国，当你在公众场合买衣服，逛超市结账，买吃的，经常会听到服务员说：How are you? 或者How are you doing today? 其实就是礼貌问语而已。
Fine, thanks. And you?
Good, thanks. And you?
Great, thanks. And you?
Couldn’t be better.
Can’t complain/No complaints.
Happy as a clam.
Clam (n) 蛤蜊(一种海鲜)
除了How are you?
你也会经常听到How are you doing? 或者更简单的How you doing? 甚至“Hey, how y’all doin?”
回答同样可以用前面刚才那几种fine, good, great, pretty good，然后接thanks, and you?
I’m doing great. How about yourself?
I’m doing really well. And you?
I’m doing amazingly well.
I’m doing better than good. How about you?
不管对方问的是How are you?还是How are you doing? 或者How’s everything?你都可以回答Fine/Good/Great, thanks, and you?
I’m good. Thanks, how about you?
I’m doing really well. Thank you. How about yourself.