why的用法你知道哪些?今天小編給大家?guī)韜hy的用法，希望能夠幫助到大家，下面小編就和大家分享，來欣賞一下吧。

　　why的用法總結大全

　　why的意思

　　adv. (用于問句)為什么,為何,(反問，表示不必)何必,(說明理由)為什么

　　int. 呵唷，哎呀，嗨

　　n. 理由,原因,說明,難解的問題

　　why用法

　　why可以用作副詞

　　why的意思是“為什么”,可用作疑問副詞,也用作關系副詞,還用作連接副詞,可以引導名詞從句。

　　why作為疑問副詞,引導特殊疑問句或省略的特殊疑問句,表示疑問,意思是“為什么”; 后面跟不帶to的動詞不定式,意思是“為什么要…”,表示某一動作是不必要的或無意義的。

　　why not有三重含義:①表示“為什么不”,②表示建議,③表示同意。why not跟不帶to的動詞不定式,用來提出建議,表示“為什么不…”, why not也可用來對前面的否定句進行提問。

　　why可以用作感嘆詞

　　why用作感嘆詞時,主要表示吃驚、承認、認可,如果對方提的問題過于簡單,回答時可以用why來表示輕微的驚異,有時用來表示不耐煩、抗議或異議。

　　why在口語中還可以用來表示躊躇或躊躇后再繼續(xù)往下說。

　　why用作感嘆詞的用法例句

　　Why, it's nearly nine o'clock.啊, 快要九點了。

　　Why,it's Bill,as I live and breathe!哎呀，原來是比爾啦!

　　Why,he is the one of all others I have wanted to see.哎呀，他就是我最想見的人!

　　why用法例句

　　1、You flatter yourself. Why would we go to such ludicrous lengths?

　　你真自以為是。我們?yōu)槭裁匆M那么大的力氣?

　　2、Why are Geography, Drama, Art and English in the ascendant?

　　為什么地理、戲劇、藝術和英語逐漸受寵?

　　3、He wonders why the digits on his calculator slope to the right.

　　他不明白為什么他的計算器上面的數(shù)字向右傾斜。

　　Why 的用法--一分鐘英語

　　01

　　為什么

　　最基本的用法

　　Why? 為什么?--Because i want to do it! 因為我想做。

　　Why wait? let's leave now. 為什么要等?我們走吧。

　　Why should i help him--he never helps me?

　　他從沒幫過我，我為什么要幫助他?

　　Why did you leave? 你為什么離開了?

　　02

　　why 引導的從句

　　I don't know why she isn't here.

　　我不知道她為什么不在這。

　　It's easy to see why he is popular.

　　不難看出他為何會這樣受歡迎。

　　My filght was cancelled, that's why I'm late.

　　我的航班被取消了，這就是為什么我會遲到的原因。

　　There is no reason why we shouldn't succeed.

　　我們沒有理由不成功!(固定搭配)

　　03

　　固定疑問句，表示建議

　　Why don't you come with us?

　　你為什么不跟我們一起走呢?(表示建議，為什么不……)

　　Why don't you finish your homework first?

　　你為何不先完成你的作業(yè)呢?

　　Why not use my car? you will fit more in.

　　為何不用我的車呢?你能裝更多

　　"Let's go out for an Italian tonight" "sure, why not"

　　‘’我們今晚出去吃意大利菜怎么樣?’ “好啊，為什么不呢”

　　Why與Why not的用法

　　記得某年我教仁愛版英語九年級上冊某單元某一Section時(因疫情在家，沒找到相關課本，具體哪個Section遺忘)，我發(fā)現(xiàn)了一個Why在使用中的用法錯誤，于是給課本編輯打電話說明。第二天編輯打回電話，認為我的觀點正確，并于再版時做了改正。然而，今年我教仁愛版英語八年級上冊Unit 3，Topic 3中的Section B時，又發(fā)現(xiàn)了同樣的問題。由此可見，Why與Why not的用法受漢語的影響是多么嚴重!現(xiàn)引述課本句子如下：

　　...

　　Jane: I saw it last week. It’s wonderful!

　　Michael: I don’t agree.

　　Jane: Why? Isn’t it interesting?

　　...

　　(仁愛版八年級上冊第三單元 Topic 3 中Section B P73)

　　1. Why, as a question word, is used to ask about reasons and explanations:

　　Why did he leave home when he was 16?

　　Why didn’t you tell Tom about it?

　　--They've decided to move to Devon. 他們已經(jīng)決定搬到德文了。

　　--Why? 為什么?

　　Note:

　　a. When we ask for reasons in speaking, we can use the phrase why is that? In informal conversations we often say why’s that?:

　　--She’s not going to college this year.

　　--Why’s that?

　　--She says she wants to travel for a while.

　　b. In informal contexts we sometimes use what for? with the same meaning of asking for a reason:

　　--Ann’s going to be really upset with me.

　　--What for?

　　--I forgot to call her back last night.

　　c. When we reply to a negative statement, we usually say why not?:

　　--I don’t like it here. 這里我不喜歡它。

　　--Why not? 為什么?

　　--He isn’t going to see her off at the station. 他不準備去車站送她。

　　--Why not? 為什么?

　　2. Why is used in indirect questions:

　　He asked me why I wanted to leave the job.

　　I wonder why he told nobody he was getting married.

　　3. Why is used on its own as a response:

　　--I’m going home now.

　　--Why?

　　4. Why ever or Why on earth is used to add emphasis and to show shock or surprise:

　　--Beth has decided to go on holiday by herself this year.

　　--Why ever would anyone want to go on holiday alone?

　　Why on earth has Julie bought me this expensive present?

　　5. That’s why …is used to give a reason:

　　--Frank and Ellen have three children now.

　　--That’s why they moved house. They needed more space.

　　--Ian’s not been feeling well recently, has he?

　　--No. That’s why he’s taken some time off.

　　6. Why should … is used when we are annoyed about something:

　　Why should old people have to worry about health insurance?

　　Note:Why should I? as a response is very direct and rude.

　　A is a mother and B is a child who is opening and closing the car window

　　A: Stop doing that.

　　B: Why should I?

　　7. “Why not ...?” is used to make a suggestion:

　　If you’re so unhappy, why not leave?

　　8. “Why not ...?” is used to express agreement:

　　--May I go with you? 我可以和你一起去嗎?

　　--Why not? 可以呀。

　　--Let's go out for an Italian tonight.

　　--Yes, why not?

　　9. used to insist on his own opinions or ideas:

　　--Are you really going to sue them? 你真的要控告他們嗎?

　　--Yes, why not? 是的，為什么不呢?

　　Note：We must use the infinitive without “to” in the questions beginning with “why not” or “why”. But Why not is used to make a suggestion and why is used to indicate that an action is unnecessary and meaningless.

　　--My girl-friend is in a bad mood. 我女朋友心情不好。

　　--Why not (Why don’t you) give her some flowers? 為什么不送給她一些花呢?

　　Why argue with him? He will never change his mind. 為什么跟他爭論?他永遠不會改變看法的。

　　根據(jù)上述why以及why not的用法，我們有理由可判斷本文開頭中所提仁愛版八上第三單第三話題中的Section B P73中的Why，應該是Why not。