once
音标发音
- 英式音标 [wʌns]
- 美式音标 [wʌns]
- 国际音标 [wʌns]
- 英式发音
- 美式发音
基本解释
- adv.一次；曾经
- conj.一旦
- n.一次
- adj.曾经的
词源解说
- 直接源自古英语的ane，意为一。
用法辨析
- 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。
- once引导的从句中有些部分可以省略。
conj. (连词)
英汉例句
- I have been there once.
我到过那儿一次。 - Once you begin, you must continue.
一旦开了头,你就必须继续下去。 - Once is enough for me.
我一次就够了。
用作副词 (adv.)
用作连词 (conj.)
用作名词 (n.)
词组短语
- once more 再一次;又一次;再次;重新
- once again 再一次;再次见到你;再来一次
- Once Cafe 旺斯咖啡;往咖啡
- once through 单程的;通过;凭借;穿过
- click once 部署;设置;操作;技术
短语
英英字典
- (ONE TIME) one single time
- (PAST) in the past, but not now
- as soon as, or from the moment when
- If something happens once, it happens one time only.
- Once is also a pronoun.
- You use once with "a" and words like "day," "week," and "month" to indicate that something happens regularly, one time in each day, week, or month.
- If something was once true, it was true at some time in the past, but is no longer true.
- If someone once did something, they did it at some time in the past.
- If something happens once another thing has happened, it happens immediately afterward.
- If something happens all at once, it happens suddenly, often when you are not expecting it to happen.
- If you do something at once, you do it immediately.
- If a number of different things happen at once or all at once, they all happen at the same time.
- For once is used to emphasize that something happens on this particular occasion, that it has never happened before, and may never happen again.
- If something happens once again or once more, it happens again.
- If something happens once and for all, it happens completely or finally.
- If something happens once in a while, it happens sometimes, but not very often.
- If you have done something once or twice, you have done it a few times, but not very often.
剑桥英英字典
柯林斯英英字典
专业释义
- 一次