one
number, determiner uk/wʌn/ us/wʌn/
(NUMBER)
A1 （数字）1
the number 1
He had two slices and I only had one. 他有两片，而我只有一片。
She'll be one year old tomorrow. 明天她就一周岁了。
- More examples
- Trouble broke out in the match when one of the players called a member of the other team a cheat.
- They've got two adopted children and one of their own.
- He is one of the top chefs in Britain.
- When one engine stopped, we had to turn round and fly home.
- Would you run your idea by me one more time?
- Four parcels came this morning, but only one was for Mark.
- Paint one side, leave it to dry, and then paint the other.
- He can't tell one wine from another, so don't give him any of the expensive stuff.
(MEMBER)
one ofA2 （一群人或事物）中的一个，之一
a member of a group of people or things
One of their daughters has just had a baby. 他们的一个女儿刚生了孩子。
EMI is one of the world's largest record companies. EMI公司是世界最大的唱片公司之一。
Finding a cure for cancer is one of the biggest challenges facing medical researchers. 寻找治疗癌症的方法是医学研究者面临的最大挑战之一。
Our organization is just one of many charities that are providing famine relief in the region. 我们的组织只是给这个地区提供饥荒救济的众多慈善组织中的一个。
(FUTURE TIME)
B2 （用于指将来某个未确定的时间）某一
used to refer to a time in the future that is not yet decided
Why don't we meet for lunch one day next week? 我们何不在下周的某一天一起吃顿午饭？
I'd like to go skiing one Christmas. 我想在某个圣诞节去滑雪。
- More examples
- You're going to get into serious trouble one of these days.
- Let's go to the cinema one night next week.
- One of these days we're going to move to France.
- Come and visit one weekend.
- One day we'll be able to afford a car like that.
(PARTICULAR OCCASION)
B2 某一天;某一刻;某一次
used to refer to a particular occasion while avoiding stating the exact moment
One night we stayed up talking till dawn. 有一天晚上，我们一直聊到天亮。
He was attacked as he was walking home from work late one afternoon. 一天傍晚，他在下班回家的路上遭到了袭击。
One moment he says he loves me, the next moment he's asking for a divorce. 他一会儿说爱我，一会儿又要离婚。
She never seems to know what she's doing from one minute to the next. 她似乎从不清楚每时每刻自己在干什么。
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- At one point Seeger fell afoul of the US government for his antiwar actions.
- He managed to eke out a living one summer by selling drinks on a beach.
- They met in Paris one enchanted afternoon in early autumn.
- I suspected he wasn't telling me the truth, and one day I caught him out when I found some letters he'd written.
- We met one day last year when we got talking in a bar.
(SINGLE)
B2 单独一个;一个
a single thing; not two or more
Eat them one at a time (= separately). 一次吃一个。
I think we should paint the bedroom all one (= in a single) colour. 我觉得我们应该把卧室刷成一种颜色。
UK Do you think five of us will manage to squeeze into the one car? 你觉得我们5个人能够挤进一辆车里吗？
(all) in oneC2 集于一体，合为一体;兼具
combined in a single person or object
With this model you get a radio, CD player, and MP3 dock all in one. 这种型号的产品将收音机、CD播放机和MP3播放器接口集于一体。
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- With one blow of the knight's axe, he clove the rock in twain.
- Only one competitor made a clear jump of the highest fence.
- Don't let one little quarrel come between you.
- I took one look at her and cracked up.
- The canteen is the one thing I'll miss about work.
(ONLY)
B2 唯一的一个
used when saying there is no other person or thing
He's the one person you can rely on in an emergency. 在紧急情况下他是你唯一可以依靠的人。
This may be your one and only (= only ever) opportunity to meet her. 这可能是你见到她的唯一机会。
My final guest on tonight's show needs no introduction. Please welcome the one and only Michael Jordan! 我们今晚节目的最后一位嘉宾无需介绍。请欢迎独一无二的迈克尔‧乔丹！
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- The one thing that's certain is that prices will go up.
- He was the one person to complete the test with no mistakes.
- She's the one person I can trust around here.
- It is the one thing I regret about my time at the company.
- The one thing he's not prepared to compromise is his family's safety.
(UNKNOWN PERSON)
formal（用于不认识的人的名字前）某一个
used before the name of someone who is not known
Her solicitor is one John Wintersgill. 她的律师是个名叫约翰‧温特斯吉尔的人。
(EMPHASIS)
mainly US（用于强调形容词）一个
used to emphasize an adjective
His mother is one (= a very) generous woman. 他母亲非常慷慨。
That's one (= a very) big ice cream cone you have there. 你那个冰激凌真是好大呀。
It was one hell of a (= a very great) shock to find out I'd lost my job. 发现自己已经丢了工作，这实在令我感到震惊。
Idiom
the one percentidiom (also the 1%) 最富有的那百分之一（指社会上拥有最多金钱、房产和权力的那一小部分人）
the richest one percent of people, who are said to have most of the money, property, and power in society
He promised to govern in the interests of all, and not just the one percent. 他承诺为所有人的利益而治理，而不仅仅是那百分之一的富豪。
one
pronoun uk/wʌn/ us/wʌn/
(ONE THING/PERSON)
A2 （一群人或一批东西中的）一个
used to refer to a particular thing or person within a group or range of things or people that are possible or available
I have a few books on Chinese food. You can borrow one if you want. 我买了几本关于中国菜的书，如果你喜欢可以借一本。
Which one would you like? 你想要哪一个？
Please make a copy for everybody in the office and a few extra ones for the visitors. 请你给办公室里每人印一份，再多印几份给来访者。
"Which cake would you like?" "The one in the front." “你想要哪个蛋糕？”“前面的那个。”
French croissants are so much better than the ones we get here. 法国羊角面包比我们这里的好吃得多。
There were lots of people watching, and not one of them offered to help. 站着旁观的有许多人，却没有一个人主动帮忙。
I've received no replies to my job applications - not a single one (= none). 我的求职申请没有任何回复——一个都没有。
Chris is the one (= the person) with curly brown hair. 克里斯就是那个长着褐色卷发的人。
not be one to do somethingUK informal 从来不做
to never do something
I'm not one to criticize other people, as you know. 你知道，我这人从来不批评人。
be one for somethinginformal 热衷于，喜爱
to like something very much
I've never been one for staying out late. 我从不喜欢在外呆到很晚。
He's a great one for the ladies. 他非常喜欢和女士来往。
- More examples
- That's one classy vehicle you've got there.
- You can always tell a real bow tie from one that clips on.
- She's written five books, and every one a cracker.
- Mrs. Wilson is one of our regular customers.
- I really must get a new jacket - this one's starting to go at the elbows.
(COMPARISON)
（表示与另一类似或相关的人或物相对照的）一个
used to talk about one person or thing compared with other similar or related people or things
They look so similar it's often difficult to distinguish one from the other. 它们看上去这么相似，常常很难区分开来。
You may have one or the other, but not both. 这个和那个你可以选一个，但不能都要。
Crime and freedom are inseparable. You can't have one without the other. 犯罪和自由如影随形，不可能只取其一。
- More examples
- During the night, he had rolled from one side of the bed to the other.
- The two cultures were so utterly disparate that she found it hard to adapt from one to the other.
- If I have to listen to something I don't understand, it just goes in one ear and out the other.
- The two sisters are so similar that it's almost impossible to tell one from the other.
- This film begins where the other one leaves off.
(ANY PERSON)
C1 formal任何人;一个人
any person, but not a particular person
One has an obligation to one's friends. 一个人对他的朋友是负有责任的。
One ought to make the effort to vote. 任何人都应该尽量去投票。
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- One's primary responsibility is to the legal system.
- One must not assume from this that the defendant is guilty.
- I wondered whether there might, after all, be some truth in the old chestnut that one's school days are the happiest of one's life.
- Yoga is said to restore one's inner equilibrium.
- Spending time with one's family is never an unalloyed pleasure.
(I/ME)
formal（讲话者或笔者用于自称）我，本人
the person speaking or writing
Of course, one (= I) would be delighted to dine with the Queen. 当然，我很乐意与女王一起进餐。
Idioms More idioms
be a oneidiom UK old-fashioned informal 是个活宝；是个有点无礼的人
to be funny in a slightly rude way or in a way that shows no respect
"He told me I couldn't have the job and I told him I never really wanted it in the first place." "Ooh, you are a one." “他告诉我不可能得到那份工作，我对他说我压根儿就不稀罕。”“噢，你可真放肆。”
be at oneidiom formal (also be as one) 同意，意见一致
to agree
We disagree on most things, but on this question we are at one (with each other). 我们在大多数问题上有分歧，可是在这个问题上我们的意见完全一致。
be one of a kindidiom C2 独一无二的；特别的
to be very unusual and special
He's one of a kind, he really is. 他独一无二，确实如此。
down in oneidiom UK informal 一口气喝下，一饮而尽
If you drink a glass of alcohol down in one, you drink the whole glass without stopping.
for oneidiom （用于表示认为自己的观点或行为正确，即使别人不这样认为）对…来说
used to say that you think your opinion or action is right, even if others do not
The rest of you may disagree, but I, for one, think we should go ahead with the plan. 你们其他人可能不同意，可是在我看来，我觉得我们应该继续执行这项计划。
go off on oneidiom UK informal 突然变得很愤怒（并开始大声喊叫或行为激烈）
to suddenly become very angry and start shouting or behaving violently
He went off on one because he thought I was threatening his dog. 他觉得我在威胁他的狗，所以暴跳如雷。
got it in one!idiom UK informal 猜对了
something that you say when someone has guessed something correctly
"Don't tell me - is Anna pregnant again?" "Got it in one!" “你先别说，安娜又怀孕了，对不对？”“猜对了！”
a hundred/thousand/million and oneidiom 非常多的，许许多多的，极多的
very many
I can't talk right now - I have a hundred and one things to do this morning. 我现在不能闲聊——今天上午我有一大堆的事情要做。
in ones and twosidiom 三三两两，零零散散
in small numbers
The replies came back in ones and twos. 零零散散地收到了些答复。
one after anotheridiom (also one after the other)B2 相继，一个接一个
many, in a series
I'll eat chocolates one after the other until the box is finished. 我会一块接一块地吃巧克力，直到盒子空了为止。
one and allidiom literary 大家，每个人，所有人
everyone
The news of his resignation came as a surprise to one and all. 他辞职的消息让每个人都很吃惊。
one by oneidiom B2 逐个地，一个接一个
separately, one after the other
One by one the old buildings in the city have been demolished and replaced with new high rises. 这座城市里的旧楼一幢接一幢地被拆除，取而代之的是现代化的高楼大厦。
They entered the room one by one. 他们一个接一个走进房间。
one dayidiom B1 （将来的）某一天，有朝一日
at some time in the future
I'd like to go to Berlin again one day. 我想有朝一日再去一次柏林。
one or twoidiom B1 几个，一两个
a few
I'd like to make one or two suggestions. 我想提一两条建议。
one way or anotheridiom (also one way or the other)B2 以某种方式
in some way that is not stated
Everyone at the party was related (in) one way or another. 聚会上的人彼此都有这样或那样的亲戚关系。
B2 无论如何，无论怎样
in any way that is possible
These bills have to be paid one way or another. 这些账单无论如何都要支付。
We have to make a decision one way or another about what needs to be done. 不管怎样，我们必须决定需要做什么。
the one aboutidiom informal 关于…的笑话
the joke about
Have you heard the one about the Italian, the American and the Australian? 你听过那个关于意大利人、美国人和澳大利亚人的笑话吗？