if

[if]

conj.是否, 如果, 即使, 每当
n.条件, 设想

conj.

1. (表示条件)如果

He will come if you invite him.

如果你请他, 他会来的。

2. (表示虚拟)假如, 要是

If I were you, I would never do that.

如果我是你, 我决不做那件事。

3. (表示让步)即使

We'll go even if it rains.

即使下雨我们也要去。

4. 是否

I wonder if she is ill.

不知她是否病了。

5. (表示因果关系)每一次……的时候(总是会)

If I feel any doubt, I inquire.

我一觉得有疑问就发问。

n.

条件; 设想[C]

There are too many ifs in his offer.

他的提议中条件太多了。

词形变化

名词复数：ifs

词义辨析

同义参见:

provided  whether  

短语词组

if only

1. 只要

If only it clears up , we'll go.

只要天一放晴, 我们就去。

2. 但愿

If only he arrives in time.

但愿他能及时赶到。

补充

ifif英:[if] 美:[ɪf]conj.1.如果, 假如If only I had gone by taxi.假若我是乘计程车去的就好了。If necessary, give me a ring.如果需要, 打个电话给我。If ever eyes could speak, hers did very plainly.如果说眼睛能说话, 她的眼睛可说得清楚极了。2.是否I will see if he wants to talk to you.我去了解一下他是否想和你谈话。3.即使, 虽然We will go even if it rains.即使下雨, 我们也要去。If he is poor, at least he is honest.他虽然穷, 但至少是诚实的。4.无论何时She glares at me if I go near her desk.我一走近她的办公桌, 她就瞪我。n.1.不确定的事, 无把握的事If he wins—and it's a big if—he'll be the first Chinese to win for fifty years.假使他赢了——是否能赢还是一大疑问——他将是五十年来的第一个获胜的中国人。

例句

1. You can have it if you like.如果你喜欢就留着吧。 2. Add a little more dressing if necessary.如有必要, 就再多加一点调料。 3. Are you good at coming up with ideas? if so, we would love to hear from you.你是否擅长创意构思？如果是, 我们将很乐意收到你的来信。 4. He asked if I had left with you, and I said no.他问我是不是和你一块儿离开的, 我说不是。 5. if this doesn't top everything!这居然不是最棒的！ 6. if there was any disappointment it was probably temporary.即便有点儿失望, 也很可能是暂时的。 7. I wonder if you'd be kind enough to give us some information, please?请问您能不能给我们提供一些信息？ 8. if you will just sign here.麻烦您在这里签字。 9. No, it's not too short, if anything it's a bit too long.不, 它不是太短, 甚至正相反, 它有点太长了。 10. Living together didn't harm our friendship. if anything it strengthened it.在一起住并没有伤害我们的友谊。要说真有什么的话, 它反而巩固了我们的友谊。 11. Meat was available once a week if at all.即便那时有肉吃, 也不过是一周吃一次。 12. if ever there was the right person for the job it was her.如果真有人适合这份工作, 那就是她了。 13. It's a recipe for disaster if ever there was one.这毫无疑问会造成灾难性的后果。 14. He's a born impresario if ever there was one.他确实天生就是当剧团经理的料。 15. What I'd do if I were you is be nice to him.如果我是你, 我要做的就是对他好。 16. I should lie down for a bit, if I were you.如果我是你, 我就躺一会儿。 17. I will be ready in a couple of weeks, if not sooner.就算不能更快, 几周以后我也会准备好。 18. She understood his meaning, if not his words, and took his advice.她即便没听懂他的话, 也明白了他的意思, 并且接受了他的建议。 19. if only it were that simple!要是那么简单就好了！ 20. if only I had more money!要是我有更多的钱就好了！ 21. A one-to-one meeting with the U.S. President was necessary, if only for a deeper exchange of views.与美国总统一对一的会谈是必要的, 即便仅仅是为了双方观点更深入的交流。 22. She writes me often, if only to scold me because I haven't written to her.她常来信, 即使仅仅为了责怪我还没写信给她。 23. The big if is whether our plan will work at all.有个很大的疑问就是, 我们的计划到底有用没用。 24. There are a lot of ifs and buts.各种各样的借口一大堆。 25. if I knew, I would say.如果我知道，我就说了。 26. if I were you, I would have failed.如果我是你，我可能会失败的。 27. if he is little, he is strong.他尽管年纪小，力气倒蛮大的。 28. if I am wrong, you are not right.即使我错了，你也不对。 29. I don't know if he is at home.问他是否在家。 30. Ask him if he's at home.我不知道他是否在家。 31. if I do not understand, I ask questions.当我不懂时我就问。 32. if I feel any doubt, I ask.我有疑问时就问。 33. if I hadn't lost my purse!我的钱包要是没丢多好! 34. if you will keep waiting for a while, they'll soon be back.请你再等一会儿，他们很快就会回来了。 35. if isn't Stephen!那不是史蒂芬吗! 36. if you have a complaint, write to the director.如果你想抱怨，就给厂长写信。 37. if you like I'll put in a word for you.如果你愿意，我就替你说句好话。 38. if you had stayed, this would never have happened.要是你当时留了下来，就不会发生这件事。 39. if I go out she gets nasty.每逢我出门，她就变得很讨厌。 40. if it takes me seven years, I shall do it.即使花上7年时间，我也要做这件事。 41. he asked if we would like some coffee.他问我们想不想来点咖啡。 42. see if you can track it down.看看你是否能追查到。 43. if I could trouble you for your names?.麻烦能否问一下你们的姓名？。 44. if you wouldn't mind giving him a message?.你是否介意带个口信给他？。 45. that's a jolly long walk, if you don't mind my saying so.那是一次愉快的长途散步，如果你不介意我这么说。 46. if you ask me, he's in love.如果你问我，他是在恋爱了。 47. well, if it isn't Frank!.哟，这不是弗兰克吗！。 48. if I could just be left alone.要是没人来管我多好。 49. the new leaders have little if any control.新任领导们很少有，或许根本就没有什么控制力。 50. if there was any weakness, it was naivety.就算有什么缺点，也只是天真而已。 51. so what if he did?.就算是他做的又怎样？。 52. she was honest, if a little brutal.她是诚实的，尽管有点残忍。 53. there are so many ifs and buts in the policy.这项政策里有那么多假设和例外。 54. witches are real if and only if there are criteria for identifying witches.当且仅当有标准识别女巫，女巫才是真实存在的。 55. if and when the film gets the green light, be sure you've read the book first.万一电影得到许可，千万保证你已经读过那本书了。 56. I haven't made much of this—if anything, I've played it down.对此我并没有加以重视——如果是这样的话，那我是看低它了。 57. I would go to see him if I were you.换作是我，我会去见他。 58. hundreds if not thousands of germs.数以百计甚至可能数以千计的细菌。 59. Willy would have to tell George more, if only to stop him pestering.即使只为了阻止乔治惹恼别人，威利也会告诉他更多的。 60. if only I had listened to you.如果我听你的话就好了。 61. if you see him, give him this letter.你看到他的话，把这封信交给他。 62. We won't go to the beach if it rains.要是下雨，我们就不去海滩了。 63. if I had more time, I would learn another language.如果有时间，我会再学一种语言。 64. I might see her tomorrow. if not, I'll see her at the weekend.我明天或许会见到她，要不就会在周末见到。 65. if I try to phone her she just hangs up.每次我给她打电话，她都把电话挂断。 66. if metal gets hot it expands.金属遇热就膨胀。 67. They asked if we would like to go too.他们问我们是不是也想去。 68. I can't remember if I posted the letter or not.这封信我记不清寄了没有。 69. if you could just come this way, sir.先生，请跟我来。 70. if I might suggest something...我想提个建议… 71. if I were you, I'd leave now.我要是你，现在就走。 72. if it wasn't for him, I wouldn't stay in this country.要不是因为他，我不会待在这个国家。 73. if only I could drive.我会开车就好了。 74. if only he'd write.要是他写信给我就好了。 75. "if it rains, (then) we won't go to the park."要是下雨，我们就不去公园了。 76. "if he actually did commit the crime, he deserves to be punished."倘若他真犯了罪，就应该受到惩罚。 77. "if you believe that, you'll believe anything!"要是你连那件事都信，你就会相信一切。 78. Come to the party if you can.你如果可以就来参加聚会吧。 79. "if you really want to know, you should ask."要是你真想知道，就应该问问。 80. What will happen if I fail the test?如果我考试没通过，会怎么样呢？ 81. "You should study. if not, you won't pass the test. = if you don't (study), you won't pass the test."你应该学习。否则，就没法通过考试。 82. Please arrive early if possible. = Please arrive early if it is possible.如果可能，请早点到。 83. I'll do the work myself if necessary. = I'll do the work myself if it is necessary.如果有必要，我会亲自做这个工作。 84. "if and when he comes, you can ask him. = When and if he comes, you can ask him."倘若他来，你可以问他。 85. "if you had studied, you would have passed the test."你如果之前好好学习的话，就会通过这次考试了。 86. The situation would be funny if it weren't so tragic. = (informal) The situation would be funny if it wasn't so tragic.这情形如果不是如此悲惨，会是很可笑的。 87. The harvest would have been good if it had rained.要是下过雨，收成本该很好。 88. "The news would be interesting if (it were) true, but it's not true."消息要是真的本该很有趣，但它不是真的。 89. He said he'll come to the party if she comes too. = (more strongly) He said he'll come to the party only if she comes too. = (most strongly) He says he'll come to the party if and only if she comes too.他说，只要她也来参加聚会他就来。 90. He gets angry if [=when] you disagree with him.你同他意见不合时他就会生气。 91. The engine stalls if you let it get too hot.发动机过热就会熄火。 92. It was an interesting if unbelievable story.那故事虽然不可信却很有趣。 93. "Her actions were understandable, if not forgivable."她的行为虽然不可饶恕却可以理解。 94. "He had to perform an annoying, if necessary, task."他不得不执行一项虽有必要却令人讨厌的任务。 95. "a fair, if tough, boss"虽然严厉但公平的老板 96. "The weather was good, if not great."天气即使不算非常好却也还不错。 97. I'll see if [=whether] I can come.我会看看我是否能来。 98. Do you know if he'll come to the party?你知道他是否会来参加聚会？ 99. I wonder if it's true (or not).我想知道这是不是真的。 100. "Frankly, I doubt if he'll pass the exams."坦率地说，我怀疑他能否通过这些考试。 101. She asked if the mail had come.她问邮件到了没有。 102. We should determine/decide if it is safe to go swimming.我们应该确定去游泳是否安全。 103. Would you mind if I sat here? [=may I sit here?]我可以坐这里吗？ 104. "if you will/would (be good enough to) follow me, ladies and gentlemen, I'll take you to your seats."女士们、先生们，请跟我来，我带你们就座。 105. "if I could make a suggestion, why don't we sit closer to the front of the theater?"我可以提个建议吗，我们为什么不坐得离剧场前台近点呢？ 106. "I'd like to stay a little longer, if you don't mind. = I'd like to stay a little longer, if it's/that's all right with you."如果你不介意，我想再待一会儿。 107. "You're looking particularly lovely today, if I may say so."恕我直言，你今天看起来特别可爱。 108. I'm sorry if you think I insulted you.如果你觉得我侮辱了你，我很抱歉。 109. I'd be sorry if you thought I had insulted you.如果你觉得我侮辱了你，我很抱歉。 110. I don't care if we're late.我不在意我们会迟到。 111. I met Brenda last week—if that is/was in fact her real name.我上星期见过布伦达——如果那是她的真名。 112. "if you're so smart, why aren't you rich?"要是你真如此聪明，为什么你不富有？ 113. These changes will have little if any impact on the problem.这些变革对此问题即使有影响也只是一丁点而已。 114. Few if any of the town's original settlers are left.这个镇子最初的移民即便有留下来的也很少。 115. "Rarely, if ever, does that happen."即使有那种事，也很少发生。 116. "His efforts have helped to save thousands, if not millions, of lives."他的努力即使没有救助数百万人的性命，也有成千上万了。 117. My car is as fast as yours if not (even) faster.我的车即使不比你的车快那也一样快。 118. So I went to the game and who should I see there if not [=but] my old friend Tom!于是我去看了比赛，竟然在那儿遇到了老朋友汤姆！ 119. "Well, if it isn't my old friend Tom!"啊，这不是我的老朋友汤姆吗！ 120. So I went to the game and who did I see there if it wasn't my old friend Tom!于是我去看了比赛，竟然在那儿遇到了老朋友汤姆！ 121. The idea is true if any idea has ever been! [=the idea is certainly true]这个想法绝对正确！ 122. "“He claims that he's never met her.” “Well, if that isn't the biggest load of nonsense I've ever heard!” [=that is a lot of nonsense; that is completely untrue]"“他说他从未见过她。”“啊，简直是胡说八道！” 123. I'll get my revenge if it's the last thing I do! [=I am determined to get my revenge]我一定会报仇的！ 124. We don't see each other too often—if anything we don't see each other often enough!我们见面不太频繁——其实是我们不怎么见面！ 125. "The economy has not improved. It has gotten worse, if anything."经济情况没有改善，反而变得更糟糕了。 126. I'd study more if I were you. [=I think you should study more]我要是你，就会多学点知识。 127. "if not for modern medicine, fewer babies would survive."要不是有现代医学，幸存的婴儿会更少。 128. "if not for him, I wouldn't be where I am today."要不是他，我不会有今天的成就。 129. "if it were not for your donations, many more children would go hungry."要不是有你的捐赠，会有更多的孩子挨饿。 130. "if it hadn't been for him, I wouldn't be where I am today."要不是他，我不会有今天的成就。 131. "if nothing else, he's polite!"至少，他有礼貌！ 132. "The food was hot, if nothing else. [=the food may not have been very good, but at least it was hot]"最起码，食物是热的。 133. if only she loved me in return!但愿她也爱我！ 134. if only it would stop raining.要是雨能停该多好。 135. "if you ask me [=in my opinion], he's a liar."依我看，他是个骗子。 136. There are too many ifs in this proposal.这一提议有太多不确定因素。 137. "They could win if everyone plays his best, but that's a big if. [=it is not likely that everyone will play his best]"要是每个人都竭尽全力，他们就能获胜，但那是个很大的未知数。 138. "(US) She's the most qualified candidate, and there are no ifs, ands, or buts about it! = (Brit) She's the most qualified candidate, and there are no ifs and buts about it! [=it is certain that she is the most qualified candidate]"她是最有资格的候选人，这一点毋庸置疑！