兩所房子不都是白色的。

他們不無道理地拒絕了她的請求。

很可惜，我們無從知曉。

"won't"是"will not"的縮短形。

他不是工會會員。

【記】not-不,knot-打結:不要打結

not adv 1 (a) (used with aux vs and modal vs to form the negative; often contracted to -n't in speech and informal writing 與助動詞和情態動詞連用 構成否定式; 在口語或語體文中常略作-n't) She did not see him. 她沒見他. You may not be chosen. 可能挑不上你. They aren't here. 他們沒在這兒. I mustn't forget. 我決不能忘記. Wouldn't you like to go home? 你不愿意回家嗎? (b) (used with non-finite vs to formthe negative 與非限定動詞連用構成否定式) He warned me not to be late. 他提醒我別遲到. The difficulty was in not laughing out loud. 難就難在沒笑出聲來. 2 (a) (used after believe, expect, hope, trust, etc instead of a clause beginning with that and containing a negative v 用於believe、 expect、 hope、 trust等動詞之後, 代替that引導的否定從句) `Will it rain?' `I hope not (ie that it will not rain).' ｀這種天會下雨嗎?＇｀我希望別下雨.＇ `Does he know?' `I believe not.' ｀他知道嗎?＇｀我認為他不知道.＇ `Can I come in?' `I'm afraid not.' ｀我可以進來嗎?＇｀很抱歉, 不可以.＇ (b) (used to indicate the negative alternative after questions with Are you, Can he, Shall we, etc 用於含有Are you、 Can he、 Shall we等的疑問句之後, 構成選擇疑問句) Is she ready or not? 她準備好了沒有? Can you mend it or not? 你能不能修理它? I don't know if/whether he's telling the truth or not. 我不知道他說的是否是實話. 3 (a) (used to reply in the negative to part or all of a question 用於對疑問句做部分的或全部的否定回答) `Are you hungry?' `Not hungry, just very tired.' ｀你餓嗎?＇｀不餓, 只是很累.＇ `Would you like some more?' `Not for me, thank you.' ｀你再要點兒嗎?＇｀別給我了, 謝謝.＇ `Do you go in the sea every day?' `Not in the winter.' ｀你每天都下海嗎?＇｀冬天不下海.＇ (b) (used to deny the significance of the following word or phrase 用以否定緊跟其後的詞或短語的意義) It was not greed but ambition that drove him to crime. 驅使他犯罪的并非貪婪而是野心. Not all the students have read the book. 不是所有的學生都讀過那本書. `Who will do the washing-up?' `Not me.' ｀誰管刷鍋洗碗?＇｀我不管.＇ (c) (used to show that the opposite of the following word or phrase is intended 用以表示與緊跟其後的詞或短語相反的意思) a town that is not a million miles from here, ie very close 距此地并非十萬八千里的一座城市（很近） She argued, and not without reason (ie reasonably), that no one could afford to pay. 她辯稱沒人能付得起錢, 這也不無道理. We plan to meet again in the not too distant future, ie quite soon. 我們打算不久以後再次見面. 4 (idm 習語) not only...(but) also (used to emphasize the addition of sb/sth 用以強調遞進關系的某人[某事物]) Not only the grandparents were there but also the aunts, uncles and cousins. 不光是祖父母, 連姑母、 叔父及其子女也在那里. He not only writes his own plays, he also acts in them. 他不僅是自編劇本, 還飾演其中的角色. `not that though one is not suggesting that 并不是說 She hasn't written to me yet not that she ever said she would. 她還沒給我來信--倒不是她說過要給我寫信.

*[n?t]ad. 不, 非, 未【計】 非相關詞組: not all that not but that not that not that...but that... not too well not too bad not a few not reluctant not on not without reason as likely as not as soon as not not a not a chance