查词 - once

1 on one occasion only 一次，一回 BrE spoken :

I’ve only met her once.

我只见过她一面。

Paul’s been to Wexford once before .

保罗曾去过韦克斯福德一次。

(just) the once BrE spoken 【英，口】:

Mrs Peterson came in to see Ruth just the once.

彼得森太太就那一次进来看了鲁思。

2

once a week/once every three months etc

one time every week etc, as a regular activity or event 每周一次/每三个月一次等

Staff meetings take place once a week.

员工会议每周举行一次。

They took separate holidays at least once every two years.

他们每两年至少有一次各自去度假。

3 at some time in the past, but not now 曾经，以前

Sonya and Ida had once been close friends.

索尼娅和艾达曾是很要好的朋友。

She and her husband had once owned a house like this.

她和丈夫曾经拥有这样一幢房子。

once-great/proud etc

It was sad to see the once-great man looking so frail.

看到曾经那么伟大的人物如此脆弱，真让人心里难受。

the once-mighty steel industry

曾经很辉煌的钢铁工业

4 in the past, at a time that is not stated 过去，曾经

I once ran 21 miles.

我曾经跑过 21 英里。

Marx once described religion as the ‘opium of the people’.

马克思曾把宗教称为“人民的鸦片”。

5

at once

a. immediately or without delay b. together, at the same time 一起，同时

Now, go upstairs at once and clean your room!

现在立刻上楼去打扫你的房间！

When I saw him I recognized him at once.

我一眼就认出了他。

I can’t do two things at once!

我不能同时做两件事！

Don’t all talk at once.

不要同时发言。

6

once more/once again

a. again, after happening several times before b. used to say that a situation changes back to its previous state c. used before you repeat something that you said before [正式] 再说一次，重复说一遍 formal

I looked at myself in the mirror once more.

我又看了一眼镜子里的自己。

Once again she’s refusing to help.

她再一次拒绝帮忙。

The crowds had all gone home and the street was quiet once more.

群众都回家去了，街上恢复了宁静。

Once again, it must be stressed that the pilot was not to blame.

再说一遍，必须强调的是飞行员没有责任。

7

all at once

a. if something happens all at once, it happens suddenly when you are not expecting it b. together, at the same time 一起，同时

All at once there was a loud banging on the door.

突然传来一记重重的敲门声。

A lot of practical details needed to be attended to all at once.

需要同时注意许多具体的细节。

8

(every) once in a while

sometimes, although not often 偶尔，有时，间或

I do get a little anxious once in a while.

我的确偶尔会有点担心。

I saw her in the shop every once in a while.

有时我在商店里看到她。

9

never once/not once

used to emphasize that something has never happened 从未，从来没有

I never once saw him get angry or upset.

我从未见过他生气或难过。

Not once did they finish a job properly.

他们从来没有把一件事情做好过。

10

(just) for once

10. used to say that something unusual happens, especially when you wish it would happen more often 难得一次，就这一回

Be honest for once.

诚实点，哪怕就这一次。

Just for once, let me make my own decision.

就这一次让我自己作决定吧。

For once Colin was speechless.

科林这一次哑口无言了。

11

once and for all

11. a. if you deal with something once and for all, you deal with it completely and finally b. used to emphasize your impatience when you ask or say something that you have asked or said many times before [英，口] 最后一次〔强调不耐烦〕 BrE spoken

Let’s settle this matter once and for all.

我们把这个问题彻底解决了吧。

Once and for all, will you switch off that television!

最后说一次，把那电视关掉！

12

once or twice

12. a few times 一两次，几次

I wrote to him once or twice, but he didn’t answer.

我给他写过一两次信，但他没有回复。

13

(just) this once

13. used to emphasize that this is the only time you are allowing something, asking for something etc, and it will not happen again [口] 就这一次 spoken

Go on, lend me the car, just this once.

好啦，把车借给我吧，就这一次。

I’ll make an exception this once.

这次我就破个例。

14

once upon a time

14. a. at a time in the past that you think was much better than now b. a long time ago – used at the beginning of children’s stories 从前，很久以前〔用于儿童故事的开头〕 spoken

Once upon a time you used to be able to leave your front door unlocked.

从前，大门是可以不上锁的。

15

once in a blue moon

15. very rarely [非正式] 难得地，破天荒地 informal

It only happens like this once in a blue moon.

这样的情况是极为罕见的。

16

do sth once too often

16. to repeat a bad, stupid, or dangerous action with the result that you get punished or cause trouble for yourself 屡次做坏（傻，险）事而遭殃

He tried that trick once too often and in the end they caught him.

他故伎重施，他们最终把他抓住了。

17

once a … , always a …

17. used to say that people stay the same and cannot change the way they behave and think [口] 一次为…，永远就是…〔表示一个人的品性是无法改变的〕 spoken

Once a thief, always a thief.

一日为贼，终身是贼。

18

once is/was enough

18. used to say that after you have done something one time you do not need or want to do it again 一次就够了〔表示你不需要或不想再做了〕 spoken

19

once bitten, twice shy

19. used to say that people will not do something again if it has been a bad experience 一朝被蛇咬，十年怕草绳