Learner's definition of HOW
1
: in what manner or way怎样，如何（指方式、方法） -
How and where did you meet him?你在什么地方、如何遇见他的？
-
How shall I address the President?我该怎样称呼总统？
-
How will we pay for the trip?我们如何支付旅行费用？
: by what means怎样，如何（指方法、手段） -
“How did you get here?” “By bus.”“你怎样来的这里？”“坐公共汽车。”
-
“How did she die?” “She had cancer.”“她怎么死的？”“她得了癌症。”
-
How do you know that?你是怎么知道的？
-
How did you find us?你怎么找到我们的？
-
How could you have known?你是怎样知道的？
2
: for what reason : why怎么，为什么（指原因） 3
: to what degree, extent, or amount多少，多么（指程度、数量）—
used before an adjective or adverb用于形容词或副词前 -
How handsome is he?他有多帅？
-
How much longer do we have to wait? = How much longer is the wait?我们还得等多久？
-
I don't know how good the service is at the new restaurant.我不知道新餐馆的服务好不好。
-
I'm not sure how old he is.我不确定他有多大。
-
It's a pity how rarely we see each other.很遗憾我们很少见面。
4
—
used for emphasis before an adjective用于形容词前，表强调 -
How old he is! [=he is very old]他真老！
-
How wonderful/strange/awful!真精彩/奇怪/可怕！
-
How kind of you to ask!你提出邀请，真是太好了！
-
(informal) How cool is that! [=that is really cool]那真酷！
5
a —
used to ask if someone feels good, bad, happy, sad, etc.怎么样（用于询问某人的情况） -
“How are you?” “Very well, thank you.”“你好吗？”“很好，谢谢。”
-
“How are you doing?” “Okay, I guess.”“最近好吗？”“我想，还不错。”
-
“How is your mother these days?” “Much better.”“你母亲最近身体怎么样？”“好多了。”
-
How do you feel? = How are you feeling?你感觉如何？
— see also how do you do (below) b —
used to ask if something is good, bad, etc.情况怎么样（用于询问某事的情况） -
How's the new job? [=do you like your new job?]新工作怎么样？
-
How are things at home?家里情况怎么样？
-
How did they do/perform [=did they do/perform well or badly] in the tournament?他们在锦标赛上表现如何？
-
How was the play?比赛情况如何？
-
How do you like the soup? = How is the soup? [=do you like the soup?; is the soup good?]你觉得这汤怎么样？
-
I can bring it over tomorrow. How's that? [=is that all right?]我可以明天把它带来。这样行吗？
-
Let me get you another blanket. There, how's that? [=is that comfortable?; is that better?]我再给你另拿条毛毯。你看，这条如何？
-
He will send a check. How will that be? = How would it be if he sent you a check? [=would it be acceptable if he sent you a check?]他会寄过来一张支票。那样可以吗？
and how
chiefly US, informal
—
used for emphasis用于强调 -
Prices are going up, and how! [=prices are going up very quickly]价格一直在涨，涨得真快！
-
“Will you be glad when it's over?” “And how!” [=I will be very glad when it's over]“那件事结束的时候你会高兴吗？”“当然！”
as how
informal
: 2that -
I don't know as how your plan would be any better than mine.我不知道你的计划哪里比我的好。
-
Seeing as how things were getting worse [=because things were getting worse], she decided to do something.鉴于情况变得越来越糟，她决定做点什么。
-
(US, informal) She allowed as how the situation was serious. [=she admitted that the situation was serious]她承认形势严峻。
how about
1
: does that include (someone) : what about（某人）怎么办 2 informal
a —
used to show that you are very impressed by someone or something用于表示对某人（或某事物）产生深刻印象 b how about that chiefly US —
used to show that you are surprised or pleased by something用于表示因某事而感到惊奇或高兴 3 also US (informal) how's about
a —
used to make a suggestion about what could be done（提出建议）…怎么样，…行不行，…好吗 -
We'll need to talk about this again. How about (meeting) next month?我们需要再谈谈这事。下个月（会面）怎么样？
-
How about [=what about] driving to the coast for the weekend?周末开车去海边怎么样？
-
How about another game? [=would you like to play another game?]再玩一局如何？
-
What should we do tonight? How about (seeing) a movie?我们今晚做点什么呢？看电影怎么样？
-
How's about some more pie?再来一些馅饼如何？
b —
used to ask someone to give you something用于向某人要某物 c —
used to ask if someone will do something用于询问某人是否会做某事 4
—
used to ask someone to tell you something in response to what you have just said用于请他人对自己刚刚说的话作答 -
I like skiing and hiking. How about you? [=what sports do you like?]我喜欢滑雪和徒步旅行。你呢？
-
I'm ready to go. How about you? [=are you ready, too?]我准备好出发了，你呢？
how can/could
1
—
used to show you think that someone has done or said something shocking or wrong你怎么能（用于表示对某人的行为或言语感到吃惊或不赞同） 2
—
used to express doubt that something will happen, is possible, etc.怎么可能（用于表示怀疑某事发生的可能性） 3
how could you informal —
used to show disappointment in someone's actions, thoughts, words, etc.你怎么可以（用于表示对某人的行为、想法、言语等感到失望）
how come
chiefly US, informal
—
used to ask why something has happened, is true, etc.怎么会；为什么 -
“He said he's not going.” “How come?” [=why isn't he going?]“他说他不去了。”“为什么？”
-
How come you're here so early? [=why are you here so early?]你怎么这么早就到这里了？
-
How come no one told me?怎么没人告诉我？
how do you do
formal
: hello —
used especially when you are first introduced to someone你好（尤用于初次被介绍给他人时）
how do you like that
—
used for emphasis or to show surprise or disapproval用于强调或表示惊讶、不赞同 -
He's moving to Hawaii? Well, how do you like that! [=that's a surprise]他要搬去夏威夷？真不可思议！
-
She canceled at the last minute. How do you like that?她在最后一刻取消了。你能相信吗？
how so
: in what way : why do you think that怎么会这样；为何如此；为什么
how's that (again)
informal
: what —
used to request that something be repeated or explained again什么，再说一遍（用于请求重复或再次解释某事）
how's that for
informal
—
used for emphasis to describe someone or something you think is very impressive用于强调，描述令人印象深刻的人或事 -
He won first prize! How's that for a guy who almost didn't enter the contest at all!他得了第一！对于一个几乎没有参加过比赛的人来说真了不起！
-
They took care of everything for us. How's that for hospitality? [=that was very hospitable]他们为我们料理好了一切。多么殷勤啊！
how will/would
—
used to express doubt that something will happen or is possible怎么能（用于表示怀疑某事发生的可能性） -
How will we (ever) get everything done on time?我们怎么可能按时完成所有事情呢？
-
How would he manage without her? [=I don't know if he will be able to manage without her; I doubt he will manage without her]没有她，他怎么能应付过去呢？
2 how /ˈhaʊ/ conjunction
Learner's definition of HOW
1
: in what manner or way怎样；如何 -
We asked how we could help.我们询问该如何帮忙。
-
Let me tell you how we'll pay for the trip.让我告诉你我们要如何支付这次旅行费用。
-
The book tells the story of how the company was founded.这本书讲述了那家公司是如何成立的。
-
She explained how she came to live here.她解释了她是怎么来这儿生活的。
-
I don't know how the service is at the new restaurant.我不知道新餐馆的服务如何。
-
I remember how they fought.我记得他们是如何战斗的。
-
It's strange how [=the way that] things happen.事情发生得很奇怪。
-
Be careful how you talk; you could get fired.当心你说话的方式，你可能会因此被炒鱿鱼。
-
And that's how it is. [=that is the state of the situation]情况就是那样。
-
They want to know how you're doing. [=if you are happy, successful, etc.]他们想知道你过得怎么样。
2
: that -
She told us how she had to work hard.她告诉我们，她不得不努力工作。
-
He knows how you are a valued employee.他知道你是位受器重的雇员。
-
It's amazing how they completed the bridge so quickly.他们如此迅速地建成了这座桥，真令人吃惊。
3
: in whatever way : however以任何方式；无论用什么方法