certain

['sə:tn]

adj.确定的, 肯定的, 某事, 某人, 某种, （与人名连用,表示不认识此人）一位叫..., 特定的, 轻微的, 微小的
pron.某些, 某几个

a.

1. 确凿的, 无疑的; 可靠的

2. 确信的, 有把握的; 一定会的[F][(+of/about)][+(that)][+wh-][+to-v]

They are certain to succeed. (They are certain of success.) (They are certain that they will succeed.)

他们确信会成功。

I'm quite certain of that.

对那事我完全可以肯定。

I was certain that he had seen me.

我肯定他已看见了我。

3. 某, 一位姓……的(人)[B]

A certain person called on you yesterday.

昨天有个人来拜访过你。

4. 某种(或一定)程度的[B]

pron.

某几个; 某些[(+of)]

词形变化

形容词比较级：more certain

形容词最高级：most certain

词义辨析

同义:

a.确凿的; 确信的

sure  positive  definite

a.某; 某种程度的

some  special  particular  

同义参见:

insistent  inevitable  real  conclusive  unavoidable  true  confirmed  confident  factual  fated  unquestionable  especial  destined  demonstrable  decisive  decided  

反义:

a.无疑的; 可靠的

uncertain  doubtful  

英英释义

形容词 certain:

definite but not specified or identified

having or feeling no doubt or uncertainty; confident and assured

同义词：sure

established beyond doubt or question; definitely known

certain to occur; destined or inevitable

同义词：sure

established irrevocably

同义词：sealed

reliable in operation or effect

同义词：sure

exercising or taking care great enough to bring assurance

同义词：sure

短语词组

for certain

1. 肯定地

I don't know for certain.

我无法肯定。

make certain

1. 确定

Please make certain when the train leaves.

请确定火车什么时候开。

补充

certaincertain英:[ˈsə:tn] 美:[ˈsɚtn]adj.1.无疑, 肯定His ear for music was certain.他对音乐的鉴赏力毋庸置疑。That we should stay together was certain.我们应该呆在一起这是肯定的。It is more or less certain.这有几分确定。After the Boston Tea Party, war with England seemed certain.波士顿倾茶事件以后, 与英国交战似乎是不可避免的。We are certain to win the game.我们一定能打胜这场比赛。The people of the afflicted areas are certain to need our help.灾区人民一定需要我们的帮助。The duties before you are certain to be heavy.摆在你面前的责任重大。We are certain to be victorious.我们定会胜利。The thief is certain to be caught in time.小偷迟早会被抓到的。You are pretty certain to be seen by someone who knows you.你一定被认识你的人见到过。We are certain that he will get over his illness.我们相信他一定会战胜病魔的。He is certain that this TV set will operate on batteries.他肯定这个电视机可以用电池。Be certain you catch your train on time.务必准时赶上火车。I'm certain she saw me yesterday.我确信她昨天看到了我。I was certain I'd found you here if you were still in existence.我确信如果你还活着的话, 我会在这儿找到你。I am not certain who he is.我无法确切说出他是谁。I'm not certain where this ought to be put.我不能确定这东西该放在什么地方。It is certain he will come to the discussion.他肯定会来参加讨论。It is not yet certain who will succeed him.谁来接他的班还未确定。It is not certain when it will take place.不能确定这事什么时候会发生。2.某, 某些A certain Mr. Brown telephoned while you were out.你出去的时候, 有个叫布朗的先生来过电话。The terrorists will only release their hostages on certain conditions.恐怖分子只有在某些条件下才肯释放人质。There are certain forms that must be followed in diplomatic circles.在外交界有一些礼节是必须遵守的。I am prepared to make certain concessions.我准备做某些让步。There was a certain hesitation in her manner.她的态度有些犹豫不决。If you want to be slim, you should try to lose a certain amount of weight every week.如果想变得苗条些的话, 你应该想方设法每周减少点体重。She has certain definite beauties, such as her eyes.她确有几分姿色, 比如说她的眼睛。There is no certain cure for this disease.这种病没有特效药。They face certain death unless they can be rescued today.他们除非今天获救, 否则必死无疑。The club meets on certain days every month.俱乐部成员每月于某些天聚一次。

例句

1. It wasn't a gunshot – I'm certain of that.那不是枪声, 这点我敢肯定。 2. She's absolutely certain that she's going to win.她坚信自己会取得胜利。 3. He felt certain she would disapprove.他敢肯定她会反对。 4. We are not certain whether the appendix had already burst or not.我们不能确定阑尾是否已经破裂。 5. No one was certain who invited Gary.没有人确定是谁邀请了加里。 6. It is certain that Rodney arrived the previous day.罗德尼是前一天到的, 这一点是肯定的。 7. Victory looked certain.胜利在望。 8. He was certain to fail.他注定会失败。 9. Brazil need to win to be certain of a place in the finals.巴西需要赢得一场胜利来确保晋级决赛。 10. The date is already certain for the invasion.入侵的日期已经确定了。 11. His judgement is certain.他的判断是可靠的。 12. He will win for certain.毫无疑问他会赢。 13. I don't think we'll ever know for certain.我认为我们永远也不会知道到底是怎么回事。 14. Firstly, they must make certain that no funds have gone missing.首先, 他们必须确保资金没有丢失。 15. To make extra certain, a police helicopter kept watch overhead.为确保万无一失, 一架警用直升机一直在空中警戒。 16. Leaflets have been air dropped telling people to leave certain areas.已经空投了传单, 告诉人们离开某些区域。 17. You owe a certain person a sum of money.你欠某人一笔钱。 18. There will be certain people who'll say 'I told you so!'有人会说“我早就告诉过你了！”。 19. She arranged for them to be hidden in the house of a certain Father Boduen.她安排他们藏身于一个名叫鲍敦的神父的房子里。 20. I felt a certain bitterness.我感到一丝苦涩。 21. Of course there is a certain amount of risk involved.当然有一定的风险。 22. certain of the members have not paid their subscriptions.某些会员还没有缴纳会费。 23. They'll have to give up completely on certain of their ideas.他们将不得不完全放弃他们的某些想法。 24. it's certain that more changes are in the offing.毫无疑问，将会有更多的变化。 25. she looks certain to win an Oscar.她看来肯定会赢得奥斯卡奖。 26. are you absolutely certain about this?.这事你能绝对肯定吗？。 27. to my certain knowledge, I've never set eyes on her before.我确信我从未见过她。 28. he raised certain personal problems with me.他问了我一些个人问题。 29. the exercise was causing him a certain amount of pain.这种锻炼使他感到有些疼。 30. a certain General Percy captured the town.一位叫珀西的将军占领了这座城镇。 31. certain of his works have been edited.他的某些作品已被校订过了。 32. I don't know for certain.我并不确切知道。 33. he probably knew her, but it didn't do any harm to make certain.他很可能认识她，但确定一下是否如此并没什么坏处。 34. She's absolutely certain that there was somebody outside her window.她确信窗外有人。 35. We're not quite certain what time the train leaves.火车什么时候开，我们不大有把握。 36. I'm certain of one thing -- he didn't take the money.有一点我是肯定的，他没拿那个钱。 37. It is almost certain that unemployment will increase this year.今年的失业人数会上升，这差不多成了定局。 38. The Director is certain to agree.主任一定会同意。 39. We must rescue them today, or they will face certain death.今天我们必须营救他们，要不他们必死无疑。 40. You can only contact me at certain times of the day.一天里你只有某些时候可以跟我联络上。 41. There are certain reasons why I'd prefer not to meet him again.为了某些原因我不想再跟他见面。 42. There was a certain feeling of autumn in the air.那时候已略有秋意。 43. I received a letter from a certain Mrs Berry.我收到一位贝里太太的来信。 44. I don't know for certain what time we'll arrive.我说不准我们什么时候能到。 45. They're doing everything they can to make certain that they win.他们正在尽一切努力确保胜利。 46. We'd better phone Akram before we go to make certain he's expecting us.我们离开前最好打个电话给阿克拉姆，以确定他在等我们。 47. Are you certain [=sure] you want to leave today?你真的想今天走？ 48. I feel less than certain about it. [=I am not sure about it]这件事我不太确定。 49. She's certain (that) she can do the job despite her lack of experience.尽管她缺乏经验，但她确信能胜任这个工作。 50. I'm fairly certain that I'll be on time.我肯定会准时的。 51. "Although little is known about these ancient people, it is certain that they grew a number of crops."尽管人们对这些古代人知之甚少，但他们肯定种过许多种作物。 52. "It's not certain [=definite] that the company will lay off workers. [=the company may lay off workers, but it also may not]"公司是否会裁员尚不清楚。 53. It seems certain that the jury will convict him.看样子陪审团一定会判他有罪。 54. Before the game was half over our team's defeat was nearly certain.比赛还没进行到一半，我们队的败局就几乎已定。 55. Contact with the poison means certain death.接触这种毒药必死无疑。 56. Her victory seems certain.她似乎稳操胜券。 57. "As technology develops, the rates of success with the procedure are certain to improve."随着技术的进步，这道工序的成功率肯定会提高。 58. Health-care costs are certain [=sure] to increase in coming years.未来几年，医疗成本肯定会增加。 59. She is almost certain to win.她几乎已胜券在握。 60. He's all but certain to say no. [=he will almost surely say no]几乎可以肯定他会拒绝。 61. Each employee will receive a certain share of the profits.每位员工都将得到一定份额的利润分成。 62. Building even a simple bookcase takes a certain amount of skill. [=takes some skill]即便做一个简单的书柜也需要一定技巧。 63. certain people are always late for dinner.某些人总会在晚饭时迟到。 64. On certain days there is no parking on the street.在某些特定日子，街上是不准停车的。 65. The new technology has certain limitations.这项新技术存在一些缺陷。 66. Students must fulfill certain requirements to graduate.学生们必须达到某些要求才能毕业。 67. She's allergic to certain [=particular] foods.她对某些食物过敏。 68. The contract can be extended under certain circumstances. [=in some special cases]合同在特定情况下可以延期。 69. To a certain extent [=up to a point] he's right.在一定程度上，他是对的。 70. The movie will appeal to people of a certain age. [=people who are no longer young]中年人会对这部电影感兴趣。 71. She has a certain elegance about her.她身上有种优雅的气质。 72. The house has a certain charm.这栋房子有某种独特的魅力。 73. "In 1889, a certain Mr. Kelly made a large donation to the church."*1889年，有一位凯利先生给教堂捐了一大笔钱。 74. No one knows for certain what the outcome will be.谁也说不准结果将会如何。 75. We'll need more than an hour to get there for certain. [=for sure]我们肯定要花一个多小时才能到那儿。 76. Make certain (that) you lock the door when you leave. = Make certain to lock the door when you leave.你离开时一定要把门锁好。 77. We must make certain [=make sure] this doesn't happen again.我们必须确保这样的事情不再发生。 78. She made certain she thanked each of them for coming.她确保自己向每位来宾都表达了谢意。 79. Make certain of your flight times [=be sure that you definitely know your flight times] before you leave for the airport.去机场之前一定要弄清楚你的航班时间。 80. certain of his assumptions are simply not true.他的某些假设是完全错误的。 81. We know that certain of his classmates walk to school every day.我们知道他的一些同学每天步行上学。