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；曾經
- conj.一旦
- n.一次
- adj.曾經的
词源解说
- 直接源自古英語的ane，意爲一。
用法辨析
- once用作連詞時可引導時間狀語從句和條件狀語從句。用於前者時意爲“一旦…就…”,所引導的從句多很短; 用於後者時意爲“衹要”,這種條件從句似帶有時間條件的含意。
- once引導的從句中有些部分可以省略。
conj. (連詞)
英汉例句
- I have been there once.
我到過那兒一次。 - Once you begin, you must continue.
一旦開了頭,你就必須繼續下去。 - Once is enough for me.
我一次就夠了。
用作副詞 (adv.)
用作連詞 (conj.)
用作名詞 (n.)
词组短语
- once more 再一次;又一次;再次;重新
- once again 再一次;再次見到你;再來一次
- Once Cafe 旺斯咖啡;往咖啡
- once through 單程的;通過;憑借;穿過
- click once 部署;設置;操作;技術
短語
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.
劍橋英英字典
柯林斯英英字典
专业释义
- 一次