once

[wʌns]
  • 释义
  • adv.

    一次;每一次;每隔…一次;曾经;

  • conj.

    一…就;

  • 词义辨析
  • at once, directly, immediately, instantly, presently, right away
  • 这组词(组)共同的意思是“立即”“马上”。它们的区别在于:
    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......”。
  • 双语例句
  • 1、

    Once upon a time, asking a woman if she has a job was quite a straightforward question.

    从前，问一位女性是否有工作是个相当简单直接的问题。

    ——柯林斯例句
  • 2、

    All at once there was someone knocking on the door.

    忽然有人敲门。

    柯林斯例句
  • 3、

    If we act fast, we can once and for all prevent wild animals in Britain from suffering terrible cruelty.

    如果我们迅速采取行动，就可以一劳永逸地使英国的野生动物免受残忍的虐待。

    ——柯林斯例句
  • 4、

    We arranged a special social event once a year to which we invited our major customers.

    我们每年举办一次专门的社交活动，邀请重要客户出席。

    ——柯林斯例句
  • 5、

    Once in a while she phoned him.

    她间或会给他打个电话。

    柯林斯例句
  • 6、

    His smile, for once, was genuine.

    只有这一次，他真诚地笑了。

    柯林斯例句
  • 7、

    We have to resolve this matter once and for all...

    我们必须彻底解决这一问题。

    柯林斯高阶英语词典
  • 8、

    I have to go, I really must, at once...

    我得走了，我真的必须马上就走。

    柯林斯高阶英语词典
  • 9、

    Once again an official inquiry has spoken of weak management and ill-trained workers.

    官方调查又一次提到了管理不力与工人缺乏训练的问题。

    柯林斯高阶英语词典
  • 10、

    I popped my head round the door once or twice...

    我有几次头撞到了门上。

    柯林斯高阶英语词典
  • 11、

    Once or twice she had caught a flash of interest in William's eyes...

    有那么一两次，她发现威廉的眼睛里流露出一丝感兴趣的神色。

    柯林斯高阶英语词典
  • 12、

    Once customers come to rely on these systems they almost never take their business elsewhere...

    顾客一旦依赖上这些系统，几乎就不会光顾其他商家。

    柯林斯高阶英语词典
  • 13、

    I once went camping at Lake Darling with a friend...

    我曾和一位朋友在达令湖畔露营。

    柯林斯高阶英语词典
  • 14、

    I lived there once myself, before I got married...

    我结婚前曾独自在那儿住过。

    柯林斯高阶英语词典
  • 15、

    Amy picked up the hairbrush and smoothed her hair once more...

    埃米拿起发梳，再次将头发梳理整齐。

    柯林斯高阶英语词典
  • 16、

    I met Wilma once, briefly...

    我曾经和威尔玛有过短短的一面之缘。

    柯林斯高阶英语词典
  • 17、

    No bank could ever pay off its creditors if they all demanded their money at once...

    如果所有的储户同时要求提取存款，没有哪家银行能办得到。

    柯林斯高阶英语词典
  • 18、

    Since that evening I haven't once slept through the night...

    从那天晚上之后，我没有睡过一次安稳觉。

    柯林斯高阶英语词典
  • 19、

    The decision had taken about 10 seconds once he'd read a market research study...

    在他看过一份市场调研报告后大概10秒钟就作出了决定。

    柯林斯高阶英语词典
  • 20、

    My daughter comes to visit me once every fortnight.

    我女儿每两周来看我一次。

    柯林斯高阶英语词典
  • 21、

    'Once upon a time,' he began, 'there was a man who had everything.'...

    “很久很久以前，”他开始说道，“有这么一个人，他应有尽有。”

    柯林斯高阶英语词典
  • 22、

    Lung cells die and are replaced about once a week...

    肺细胞约每周新老更替一次。

    柯林斯高阶英语词典
  • 23、

    The patient was seen for follow-up visits once every three months...

    这位病人每三个月接受一次随访就诊。

    柯林斯高阶英语词典
  • 24、

    Remove from the heat, add the parsley, toss and serve at once...

    端离炉子，加上欧芹，颠起翻面后就立刻上桌。

    柯林斯高阶英语词典
  • 25、

    For once, dad is not complaining...

    爸爸这次破天荒地没有抱怨。

    柯林斯高阶英语词典
  • 26、

    I feel terribly sleepy all at once...

    我突然觉得特别困。

    柯林斯高阶英语词典
  • 27、

    You can't be doing two things at once...

    不能一心二用。

    柯林斯高阶英语词典
  • 28、

    Earrings need to be taken out and cleaned once in a while.

    耳环要偶尔取出来清洗一下。

    柯林斯高阶英语词典
  • 29、

    We once walked across London at two in the morning...

    我们曾在凌晨两点步行穿过伦敦。

    柯林斯高阶英语词典
  • 30、

    The culture minister once ran a theatre...

    这位文化部长曾经经营过一家剧院。

    柯林斯高阶英语词典
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