why not的用法總結
以下是小編爲大家整理的why not的用法，希望能幫助大家更好地掌握why not這個詞組，提高英語水平。
why not 在口語中主要有以下用法。
1. 表示同意或贊成，意爲：好的;可以呀;爲什麼不可以呢。如：
A：May I go with you? 我可以和你一起去嗎?
B：Why not? 可以呀。
A：Let’s eat out tonight. 今晚我們出去吃吧。
B：Yes， why not? 那好啊。
A：I wonder if I could make a living by writing. 我不知靠寫作能否維持生計。
B：Why not? 那可以呀。
2. 用來詢問原因(有時表示一種不可理解的心情)，意爲：爲什麼;爲什麼不……呢。如：
A：He isn’t going to see her off at the station. 他不準備去車站送她。 B：Why not? 爲什麼?
A：You should not smoke. 你不該抽菸。 B：Why not? 爲什麼?
A：Don’t touch it. 別碰它。 B：Why not? 爲什麼?
A：It’s hot! You’ll burn yourself. 那是燙的，你會燙着的。
3. 表示勸誘、建議或命令，意爲：……怎麼樣;爲什麼不……呢。
如： Why not ask someone else? 問問別人怎麼樣? Why not go there at once? 爲什麼不馬上去呢?
A：My girl-friend is in a bad mood. 我的女朋友情緒不好。
B：Why not give her some flowers? 爲什麼不送她一些花呢?
4. 表示堅持自己的觀點、態度或做法，意爲：爲什麼不呢。如：
A：Are you really going to sue them? 你真的要控告他們嗎?
B：Yes， why not? 是的，爲什麼不呢?
二、考查 why not 後的動詞用何形式
why not 後習慣上只接動詞原形，不能接帶 to 不定式或現在分詞。如：
你一臉倦容，怎麼不休假呢?
誤：You’re looking tired. Why not taking a holiday?
正：You’re looking tired. Why not take a holiday?
何不靜觀其結果呢?
誤：Why not just to wait and see what happens?
正：Why not just wait and see what happens?
注：在一定的語境中，有時why not後可省略動詞原形。
如：
A：Let’s meet at the station. 我們在車站見面吧。
B：Why not at the hotel?在飯店不行嗎? 句中的why not後可視爲省略了動詞wait。
三、考查 why not 句式的結構形式
why not 後習慣上只接動詞原形，不能接句子，也不能用“why didn’t+動詞原形”“why don’t+動詞原形”這樣的不倫不類的句子。
如： 爲什麼不等到冬季大賤賣時再買一件新外衣呢?
誤：Why don’t wait till the winter sales to buy a new coat?
正：Why not wait till the winter sales to buy a new coat?
四、考查 why not 的隱含時態
按英語習慣，why not ... 結構只用於提出建議，不用於表示責備，即只用於指將來的情況，而不用於指過去情況。如：
我那時是能借錢給你的。你爲什麼沒有向我借?
誤：I could have lent you the money. Why not ask me?
正：I could have lent you the money. Why didn’t you ask me?
我喊你的名字的時候，你爲什麼不來?
誤：Why not come when I called your name?
正：Why didn’t you come when I called your name?
五、用於某些特殊表達中 如用於 I don’t see why not，其意爲“沒問題”“好呀”。
如： — Can we go to the park? 我們去公園吧。 — I don’t see why not. 好呀。
【邊學邊練】
1. — It’s a long time since I saw my sister. — _____ her this weekend? A. Why not visit B. Why not to visit C. Why not visiting D. Why don’t visit
2. Why _____ your luck downtown， Bob? That’s where the best jobs are. A. not try B. not to tryC. not tryingD. not tried
3. — Let’s go to the cinema this evening， OK? —_____ A. Not at all.B. Why not? C. Never mind.D. What of it?
4. — Shall we eat Italian food tonight? — Yes，_____ A. You’re welcome. B. Why not? C. No problem.D. Not much
5. — We could invite John and Barbara. — Yes，_____ A. So what? B. Why not?C. Not really. D. Never mind.
6. —_____ buy any bread? — Sorry， I forgot. A. Why notB. Why don’t C. Why don’t youD. Why didn’t you
7. If you want to sell your old sofa，_____ put an advertisement in the local paper? A. why not B. why to C. why don’tD. why didn’t
8. — Would you like to try some raw fish? — _____ ， I’ll try anything once. A. No wonderB. Which one C. Never mind D. Why not
9. — Would you like some coffee? — Sure，_____ A. why not?B. not exactly.C. no problem. D. so what?
10. If you are worried about this change of career，_____ talk it over with your family? A. no ideaB. no wonder C. why not D. not much
11. — Will you join us in the game? — Thank you，_____ A. but why not?B. but I’d rather not. C. and I won’t. D. and I’ll join.
12. — Michael was late for Mr. Smith’s oral class this morning. —_____? As far as I know， he never came late to class. A. How come B. So what C. Why notD. What for
13. — How about putting some pictures into the report? — _____ A picture is worth a thousand words. A. No way.B. Why not?C. All right?D. No matter.
14. — Let’s go and have a good drink tonight. —_____ Have you got the first prize in the competition? A. What for?B. Thanks a lot. C. Yes， I’d like to. D. Why not?
15. — Do you mind if I open the window? —_____ I feel a bit cold. A. Of course not. B. I’d rather you didn’t. C. Go ahead. D. Why not?
【參考答案】 1—5 AABBB 6—10 DADAC 11—15 BABAB
why not的用法
