once

英[wʌns] 美[wʌns]
  • adv. 一次；曾经
  • conj. 一旦
  • n. 一次
  • adj. 曾经的
CET4 TEM4 IELTS 考 研 CET6
使用频率:
星级词汇:
  • once adv.一次；曾经conj.一旦n.一次adj.曾经的

详细释义

    adv. (副词)
    1. 一次，一回
    2. 曾，曾经，从前，昔日
    3. 同时
    4. 根本
    5. 突然，骤然，忽然
    6. 一旦
    7. 立即，马上
    8. 仅此一次（与通常情况对比而言）
    9. 最终地
    conj. (连词)
    1. 一…就 ，一旦…就… ，一经...便
    2. 当…时候，每当
    n. (名词)
    1. 一次，一回，一度
    adj. (形容词)
    1. 从前的，以前的，曾经的
    2. 一度的
    adv. (副词)
    1. 一次 one time
    2. 曾经,昔时 at some time in the past
    conj. (连词)
    1. 一旦…就 …if ever
    2. 只要…就 …as soon as
    n. (名词)
    1. [S]一次,一回 the one time

英英释义

Adverb:
  1. on one occasion;

    "once I ran into her"

  2. as soon as;

    "once we are home, we can rest"

  3. at a previous time;

    "at one time he loved her"
    "her erstwhile writing"
    "she was a dancer once"

双语例句

1. It had once been the home of a wealthy nobleman.
这里曾是一个有钱贵族的宅邸。

来自柯林斯例句

2. We tend to meet up for lunch once a week.
我们往往每周共进一次午餐。

来自柯林斯例句

3. He once told an interviewer that he didn't even like rock music.
他曾告诉一位采访者，他甚至都不喜欢摇滚乐。

来自柯林斯例句

4. Once wholesale prices are deregulated, consumer prices will also rise.
一旦批发价格放开，零售价格也会随之上涨。

来自柯林斯例句

5. He took off at once and headed back to the motel.
他立刻离开，回到汽车旅馆。

来自柯林斯例句

    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。
    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。

用法讲解

conj. (连词)
  1. once用作连词时可引导时间状语从句和条件状语从句。用于前者时意为“一旦…就…”,所引导的从句多很短; 用于后者时意为“只要”,这种条件从句似带有时间条件的含意。
  2. once引导的从句中有些部分可以省略。
n. (名词)
at once, directly, immediately, instantly, presently, right away
  • 这组词(组)的共同意思是“立即”“马上”。其区别在于:
  • 1.at once主要指动作迅速,但中间多有一段距离,且at once比immediately意味更强。例如:
  • I'm leaving for Rome at once.我马上去罗马。
  • He gave orders for the work to be started at once.他下令立即开始那项工作。
  • 2.immediately侧重指时间“紧接着”。例如:
  • I came immediately after I'd eaten.吃过饭我立即就来了。
  • Please close your books immediately and answer these questions.请立即合上书,回答这些问题。
  • I left immediately when the clock struck twelve.钟刚打12点我就离去了。
  • 3.right away经常出现在美式英语中。例如:
  • I'll do it right away.我立即去办。
  • He had written down a list of things to do right away.他已写下须立即做的事情。
  • Don't expect them to approve of the design right away.不能期望他们马上批准这项设计。
  • 4.instantly也是指动作迅速,但它更强调的是同时发生,中间有很短的距离或无距离。例如:
  • The electrician went instantly in answer to the phone call.电工师傅一接到电话马上就去了。
  • He was killed instantly in a car accident.在车祸中,他当场死亡。
  • 5.directly强调“直接地”,多与“迂回绕过”相对。例如:
  • Whether he sailed directly across the bay or coasted round it is uncertain.他是径直驶过海湾,还是沿海岸迂回绕过的,现在还无法确知。
  • 6.presently强调过一会再去做某事。例如:
  • I will do the dishes presently, but I want to finish the story first.我过一会去洗碟子,不过我想得先看完这篇故事。
    • at once, soon
  • 这两个词(组)的区别是:soon表示“不久”“很快”,强调时间很短; at once表示“马上”“立刻”,强调动作随即发生。例如:
  • He soon became active in the class.他在班上很快就变得活跃起来。
  • When I heard the knock,I opened the door of the room at once.我听到敲门声马上就把房门打开了。
    • once，as soon as
  • 两者均为从属连词，引导时间状语从句，都表示主句的动作紧跟在从句的动作之后发生。
  • once除表时间外，还表示条件，一般译作“一旦......就......”。
  • as soon as强调的只是时间，译作“刚......就......”或“一......就......”。
    • 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

    相关词汇

    【邻近词汇】

    oncology onboard Oncet oncer Onceja Oncete Onceriu Onceanu Oncescu onceover once once once more
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