how
英 [haʊ]   美 [haʊ]  
adv.
怎样;如何（后接形容词或副词）多少，多么，多大;多少，多么，多大;以任何方式
n.
用法

adv.

how about…?

1（询问信息）…怎么样，…情况如何
used when asking for information about sb/sth

I'm not going. How about you?

我不打算去。你呢？

2（提出建议）…怎么样，…行不行，…好吗
used to make a suggestion

How about a break?

休息一下好吗？

How about going for a meal?

去吃饭好不好？

how can/could you!

(informal) （表示很不赞同或吃惊）你怎么能
used to show that you strongly disapprove of sb's behaviour or are very surprised by it

Ben! How could you? After all they've done for us!

本！他们为我们做了这么多，你怎么能这样！

Ugh! How can you eat that stuff?

啊！你怎么吃得下那种东西？

how come?

(informal) 为什么；怎么会
used to ask the reason for sth

‘I think you owe me some money.’ ‘How come?’

“我想你欠我一些钱吧。”“怎么会呢？”

how do you do

(becoming old-fashioned) （首次见面时的问候语。通常的回答也是How do you do?）你好
used as a formal greeting when you meet sb for the first time. The usual reply is also How do you do?

how's that?

1为什么；那是怎么回事
used to ask the reason for sth

‘I left work early today.’ ‘How's that (= Why) ?’

“我今天提前下班了。”“为什么？”

2（你认为）怎么样，如何
used when asking sb's opinion of sth

I'll tuck your sheets in for you. How's that? Comfortable?

我给你把被单掖在垫褥下面吧。怎么样？舒服吗？

Two o'clock on the dot! How's that for punctuality!

两点整！够守时吧！