once
柯林斯詞典
1. ADV If something happens once, it happens one time only. 一次[ADV with v]
I met Miquela once, briefly. 我見過蜜凱拉一次，時(shí)間很短。
Since that evening I haven't once slept through the night. 自那晚之后，我再也沒睡過一次囫圇覺。
2. PRON Once is also a pronoun. 一次['the/this' PRON]
"Have they been to visit you yet?"—"Just the once, yeah."
“他們已經(jīng)去看過你了嗎？”— “來過，就那一次?！?/p>
3. ADV 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. 每隔…一次[ADV 'a' n]
Lung cells die and are replaced about once a week. 肺細(xì)胞約每周死亡、更新一次。
4. ADV If something was once true, it was true at some time in the past, but is no longer true. 從前
Her parents once ran a shop. 她父母從前開過一家商店。
I lived there once myself, before I got married. 我從前自己住在那兒，沒結(jié)婚前。
5. ADV If someone once did something, they did it at some time in the past. 曾經(jīng)[ADV with v]
I once went camping at Lake Michigan with a friend. 我曾和一個(gè)朋友去密執(zhí)安湖野營。
We once walked across the frozen pond at two in the morning. 我們?cè)诹璩?點(diǎn)徒步橫穿冰凍的池塘。
6. CONJ If something happens once another thing has happened, it happens immediately afterward. 一…就
The decision had taken about 10 seconds once he'd read a market research study. 他讀完一份市場(chǎng)調(diào)研報(bào)告后，10秒鐘就做出了決定。
7. PHRASE If something happens all at once, it happens suddenly, often when you are not expecting it to happen. 突然
All at once there was someone knocking on the door. 突然有人敲門。
8. PHRASE If you do something at once, you do it immediately. 立刻
I have to go at once. 我得馬上走。
Remove from the heat, add the parsley, toss and serve at once. 從火上端下來，加入香芹，攪拌后立刻上桌。
9. PHRASE If a number of different things happen at once or all at once, they all happen at the same time. 同時(shí)
You can't be doing two things at once. 你不能同時(shí)做兩件事。
10. PHRASE For once is used to emphasize that something happens on this particular occasion, that it has never happened before, and may never happen again. 就此一次[強(qiáng)調(diào)]
For once, Dad is not complaining. 就這一次，爸爸沒有抱怨。
11. PHRASE If something happens once again or once more, it happens again. 再一次
Amy picked up the hairbrush and brushed her hair once more. 艾米拿起梳子，又梳了一遍頭發(fā)。
12. PHRASE If something happens once and for all, it happens completely or finally. 最終地[強(qiáng)調(diào)]
We have to resolve this matter once and for all. 我們必須徹底解決這件事情。
13. PHRASE If something happens once in a while, it happens sometimes, but not very often. 偶爾
Your body, like any other machine, needs a full service once in a while. 你的身體就像其他機(jī)器一樣，偶爾也需要一次全面保養(yǎng)。
14. PHRASE If you have done something once or twice, you have done it a few times, but not very often. 一兩次; 幾次
I visited once or twice. 我參觀過一兩次。
Once or twice she had caught a flash of interest in William's eyes. 有一兩次，她捕捉到威廉眼中一閃的關(guān)注。
返回 once
once /w?ns/
劍橋詞典
- I go to aerobics once a week .
- I did meet him once and it was an experience I shall never forget .
- The baby only feeds once a night at the moment , thank goodness .
- If I look flustered it's because I'm trying to do so many things at once.
- She's decided to write her memoirs to set the record straight once and for all.
- Turkey was once an important colonial power .
- England was once a densely wooded country .
- Cancer sufferers no longer face certain death as they once did.
- Shops of this type , once rare , are now numerous .
- An article on this topic would once have been considered off limits .
once adverb (ONE TIME)
one single time一次，一回
I went sailing once, but I didn't like it. 我玩過一次帆船，不過我不喜歡。
We have lunch together once a month . 我們每個(gè)月在一起吃一次午餐。
?at once
at the same time
同時(shí)
They all started talking at once. 他們同時(shí)開始講起話來。
?for once
used when something happens that does not usually happen
難得一次
For once, the bus came on time . 難得一次公共汽車準(zhǔn)點(diǎn)到達(dá)。
?just this once
used to say that you will only do or request something on this particular occasion
就這一次，僅此一回
All right , I'll lend you the money - just this once. 好吧，我把錢借給你——僅此一回。
?once again (also once more)
again, as has happened before
再次，又一次
Once again, racist attacks are increasing across Europe . 種族主義攻勢(shì)在整個(gè)歐洲又開始抬頭。
?once more
one more time
再一次
I'd like to visit the campus once more before we leave . 我想在我們離開之前再去參觀一下大學(xué)。
again, as has happened before
再次，又一次
When my father came home , everything felt right once more. 當(dāng)父親回到家時(shí)，一切又變好了。
?once or twice
a few times
幾次，一兩次
I've seen him once or twice in town . 我在城里見過他幾次。
?(every) once in a while
sometimes but not often
偶爾，間或；有時(shí)
We meet for lunch once in a while. 我們偶爾見面吃頓午餐。
?once and for all
completely and in a way that will finally solve a problem
徹底了結(jié)地；一勞永逸地
Our intention is to destroy their offensive capability once and for all. 我們的目的是徹底摧毀他們的進(jìn)攻能力。
?once in a lifetime
only likely to happen once in a person's life
一生只有一次；千載難逢地；難得地
An opportunity as good as this arises once in a lifetime . 像這樣好的機(jī)會(huì)可是千載難逢呀。
也見 once-in-a-lifetime
?the once
UK
on a single occasion
一次，一回
I've only played rugby the once, and I never want to play it again. 我只打過一次橄欖球，我再也不想打了。
例句
once adverb (PAST)
in the past, but not now從前，以前；曾經(jīng)，一度
This house once belonged to my grandfather . 這所房子曾屬于我的祖父。
Computers are much cheaper nowadays than they once were. 如今計(jì)算機(jī)要比以前便宜多了。
Once-thriving villages stand deserted and in ruins . 昔日繁榮的村莊今遭廢棄，滿目瘡痍。
例句