音标:[wʌns] ; 柯林斯词典等级:5 级; 牛津三千核心词汇;
adv. 一次, 曾经, 一旦
conj. 一旦, 一经
n. 一次
a. 从前的
r. on one occasion
r. as soon as
r. at a previous time;

考试类型:[中考/高考/IELTS]
词性分布:
副词79%
连词21%

once的用法和样例:

例句

用作副词(adv.)
  1. Once or twice she looked over her shoulder at me.有一两次她回头看看我。
  2. She had not once spoken to him all the evening.整整一晚上,她都没有跟他讲过一次话。
  3. I see them about once a fortnight.我大约两星期见他们一次。
  4. Once we lived in London.我们曾经住在伦敦。

常见句型

用作副词(adv.)
  1. I have been there once.我到过那儿一次。
  2. I once went around the world.过去我周游过全球。
用作连词(conj.)
  1. Once you begin, you must continue.一旦开了头,你就必须继续下去。
  2. Once you have taken the examination, you'll be able to relax.你一旦考过试,就可以轻松一下了。
  3. Once you have promised you must do it.你既已答应,就应该去做。
  4. Once inside her bedroom, she began to cry.一走进卧室,她就哭了。
用作名词(n.)
  1. Once is enough for me.我一次就够了。
  2. She's only done it the once so don't be too angry.她只做过这一次,所以不要太生气。

常用短语

用作副词(adv.)
once again
    一而再,再来一次now again, as in the past
once and for all
    一次了结地,一劳永逸地for the last time
once in a while
    有时,偶尔sometimes, but not often
once more
    再一次now again as before
once or twice
    几次several times; a few times
once upon a time
    从前some time ago; formerly
用作名词(n.)
all at once
    同时at the same time
at once
    立刻immediately

词汇搭配

  • once in a blue moon罕见的,极少的,难得...
  • at once立刻
  • once or twice一两次
  • all at once同时
  • once and for all彻底地
  • once upon a time从前
  • once bitten, twice shy一朝被蛇咬,十年怕井...
  • once more再一次
  • once again再一次
  • once too often又一次
  • once in a while偶尔
  • once and away一次了解地
  • not once一次也不
  • more than once不止一次(好几次)...
  • once and again一而再
  • gone过去的
  • for once就这一次
  • every once in a while间或
  • once in a way有时(偶而
  • for this once就这一次

经典引文

  • Miss Trant read it through once.sssss S. Bedford

    出自:ssssJ. B. Priestley
【近义词】
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