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If

If
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abbr.

  • 易混淆的单词：IF  if  

  • 柯林斯高阶英汉双解学习词典

  • 词典例句

Often pronounced /'ɪf/ at the beginning of the sentence. 在句首常重读。
1. CONJ-SUBORD (表示条件或假设)假如，如果，要是 You use if in conditional sentences to introduce the circumstances in which an event or situation might happen, might be happening, or might have happened. 

  • She gets very upset if I exclude her from anything...

    要是有什么事情我不让她参加,她会非常难过。

  • You'll feel a lot better about yourself if you work on solutions to your upsetting situations...

    如果你设法找到解决自己麻烦的办法,你自我感觉会好得多。

  • You can go if you want...

    你要是想走就可以走。

2. CONJ-SUBORD (用于间接疑问句)是否 You use if in indirect questions where the answer is either 'yes' or 'no'. 

  • He asked if I had left with you, and I said no...

    他问我是否和你一块儿离开的,我说不是。

  • I wonder if I might have a word with Mr Abbot?

    请问我能否和阿博特先生说几句话？

3. CONJ-SUBORD (表示与句子主要部分的陈述稍有不同)即便，纵然，虽然 You use if to suggest that something might be slightly different from what you are stating in the main part of the sentence, for example that there might be slightly more or less of a particular quality. 

  • Sometimes, that standard is quite difficult, if not impossible, to achieve...

    有时即便有可能达到那个标准，那也是非常困难。

  • I'm working on my fitness and I will be ready in a couple of weeks, if not sooner...

    我正在调养身体,最多两三周以后就可以了。

  • Many, if not most, scientific papers are presented orally at scientific meetings...

    许多科学论文,即便不是大多数,都是以口头形式在科学会议上发表的。

4. CONJ-SUBORD 如果…可以的话(通常与can，could, may 或 might 连用,在谈话中礼貌地提出自己的观点、转换话题或打断对方) You use if, usually with 'can', 'could', 'may', or 'might', at a point in a conversation when you are politely trying to make a point, change the subject, or interrupt another speaker. 

  • If I could just make another small point about the weightlifters in the Olympics...

    请允许我就有关奥运会举重运动员的问题再补充一点。

  • So, if we may return strictly to athletics again for a few minutes...

    因此,如果我们可以再花几分钟重新回到田径运动话题上来的话……

  • But if I can interrupt, Joe, I don't think anybody here is personally blaming the Germans...

    但是请允许我打断一下，乔,我认为在场的任何人都没有谴责德国人的意思。

5. CONJ-SUBORD (用于句首，表示礼貌地请求某人做某事) You use if at or near the beginning of a clause when politely asking someone to do something. 

  • 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？

  • If you will just sign here, we will arrange for your bank to deduct your payments automatically.

    麻烦您在这里签一下字,我们将联系您的银行自动扣除您的付款。

6. CONJ-SUBORD (用于引导从句中较次要的事实)即便 You use if to introduce a subordinate clause in which you admit a fact which you regard as less important than the statement in the main clause. 

  • If there was any disappointment it was probably temporary...

    即便有点儿失望,也肯定是暂时的。

  • Even if I'm overstating the case for nutrition, at least it will result in the woman being in charge of her own symptoms...

    即便我夸大了营养的重要性,但至少它会让这个女人知道关注自己的症状。

  • So what if sometimes they stayed rather late, it doesn't mean anything.

    因此，即便有时他们熬夜到很晚,那也说明不了什么。

7. PHR-CONJ-SUBORD 要是不;即使不 You use if not in front of a word or phrase to indicate that your statement does not apply to that word or phrase, but to something closely related to it that you also mention. 

  • A number of recent advances hold out if not the hope of a cure, then at least the possibility of some drug which could stop the spread of the virus...

    近来的一些进展即使不能提供治愈的希望,也至少有望研制出来某种药物来阻止病毒的传播。

  • 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。

8. PHR-CONJ-SUBORD (用于过去时,加强语气)如果真的… You use if ever with past tenses when you are introducing a description of a person or thing, to emphasize how appropriate it is. 

  • I became a distraught, worried mother, a useless role if ever there was one...

    我变成了一个忧心如焚的母亲,一个全无用处的角色。

  • If ever there was the right person in the right job it was she...

    要是真的有才尽其用的人,那就是她。

  • If ever a man needed your love, I need it.

    如果说真有一个男人需要你的爱,那就是我。

9. PHR-CONJ-SUBORD (与过去时连用，引出一个相对合理的理由)即使仅仅为了(或因为)… You use if only with past tenses to introduce what you think is a fairly good reason for doing something, although you realize it may not be a very good one. 

  • 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回信给她。

  • A one-to-one meeting with the US 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。

10. PHR-CONJ-SUBORD 要是…多好 You use if only to express a wish or desire, especially one that cannot be fulfilled. 

  • If only you had told me that some time ago...

    要是你早些时候告诉我该多好啊！

  • If only it were that simple!...

    要是那么简单就好了！

  • 'Hey, listen to me, all that 1980 nonsense is over.' — 'If only, Timothy, if only.'

    “嗨,听我说,所有那些 1980 年的无聊之事都结束了。”——“要是这样就好了,蒂莫西,要是这样就好了。”

11. PHR-CONJ-SUBORD (表示判断)好像,仿佛,似乎 You use as if when you are making a judgment about something that you see or notice. Your belief or impression might be correct, or it might be wrong. 

  • The whole room looks as if it has been lovingly put together over the years...

    整个房间看起来好像是经过了多年的精心布置。

  • His heart was pounding, as if he were frightened.

    他的心怦怦跳,似乎被吓坏了。

12. PHR-CONJ-SUBORD (表示类比)好像，仿佛，似乎 You use as if to describe something or someone by comparing them with another thing or person. 

  • He points two fingers at his head, as if he were holding a gun...

    他把两根手指指向他的头,仿佛他正举着一支枪。

  • The two cousins looked as if they'd been carved from blocks of ice.

    两个堂姊妹看起来像由冰块雕刻而成。

13. PHR-CONJ-SUBORD (强调某物不是真的)好像…一样,仿佛,似乎 You use as if to emphasize that something is not true. 

  • My husband, for some unknown reason, suggested that I loved my birds more than him: as if I would...

    我丈夫,莫名其妙地,暗示我爱鸟甚于爱他：仿佛我真如此似的。

  • Getting my work done! My God! As if it mattered.

    把我的工作做完！老天！好像它真的很重要似的。

14. PHRASE 要说真有什么的话;甚至正相反 You use 'if anything' to introduce something which strengthens or changes the meaning of the statement you have just made, but only in a small or unimportant way. 

  • Living together didn't harm our friendship. If anything it strengthened it...

    在一起住并没有损害我们的友谊。要说真有什么的话,它反而巩固了我们的友谊。

  • Asthma drugs are not addictive and you don't need to keep increasing the dose. If anything, the reverse is true.

    哮喘药物不会造成药物依赖,你不用持续增大剂量。甚至正相反,减小剂量才对。

15. PHRASE 显然不是 You use 'It's not as if' to introduce a statement which, if it were true, might explain something puzzling, although in fact it is not true. 

  • I am surprised by the fuss she's making. It's not as if my personality has changed.

    她的大惊小怪令我很吃惊。显然不是我的个性改变了。

16. PHRASE (用于给人建议)如果我是你的话 You say 'if I were you' to someone when you are giving them advice. 

  • If I were you, Mrs Gretchen, I just wouldn't worry about it...

    要是我是你,格蕾琴夫人,我一点都不会担心。

  • 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。

  • I should lie down for a bit, if I were you.

    如果我是你,我就会躺一会儿。

1. In "if I were you" the verb "were" is in the subjunctive.
在“If I were you”中动词“were”是虚拟语气。

来自《简明英汉词典》

2. According to one estimate, about19 in20 people can be hypnotizd to some degree if they want to be and if they trust the hypnotist.
据估计，20个人中有19个人可程度不同地被催眠，如果他们想被催眠并相信催眠的人。

来自《简明英汉词典》

3. Correct mistakes if you have made any and guard against them if you have not.
有则改之，无则加勉。

来自《现代汉英综合大词典》

4. If a book is hard going, it ought to be good. If it posits a complex moral situation, it ought to be even better.
如果一本书很难读，那么它应该是一本好书；如果它提出了一个复杂的道德状况，那么它就更应该是本好书了。

来自《简明英汉词典》

5. If an administrator has no access to information, it's as if he was purblind and hard of hearing and had a stuffed nose.
做管理工作的人没有信息，就是鼻子不通，耳目不灵。

来自《简明英汉词典》

6. If he can come, of course that'll be fine, but if he can't, it doesn't matter.
他能来固然很好，不来也没有关系。

来自《现代汉英综合大词典》

7. 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。

来自《简明英汉词典》

8. If one is prepared, one will be safe; if not, one will suffer.; Preparedness ensures security; unpreparedness invites disaster.
有备才能无患，无备必定吃亏。

来自《现代汉英综合大词典》

9. If she showed any tendency to coquetry he would be apt to straighten her tie, or if she "took up" with him at all, to call her by her first name.
如果那女子露出点卖弄风情的品性，他就会上前去帮她理理领带，如果她‘吃’他那一套献殷勤的手段，他马上开始用小名称呼她了。

来自《简明英汉词典》

10. If the birds have not flown for three years, they will soar into the clouds. If they have not sung for three years, their songs will take everyone by surprise.
三年不蜚，蜚将冲天；三年不鸣，鸣将惊人。

来自《现代汉英综合大词典》

11. If the matter is urgent, I'll see if I can crowd you into Mr. Black's timetable today.
如果事情紧急，我看能不能把你安排在布莱克先生的时间表中。

来自《简明英汉词典》

12. If the name is not right then speech will not be in order, and if speech is not in order then nothing will be accomplished.
名不正则言不顺，言不顺则事不成！

来自《现代汉英综合大词典》

13. If the rain doesn't stop, I doubt if we can have the game tomorrow.
雨再不停，明天的比赛就要成问题了。

来自《现代汉英综合大词典》

14. If we don't speak of our achievements, they won't run away. If we don't find out our faults, we'll be in a bad way.
成绩不夸跑不了，缺点不找不得了。

来自《现代汉英综合大词典》

15. If you agree, so; if not, so.
如果你同意，就这样；如果你不同意，也这样。

来自《现代英汉综合大词典》

16. If you drink with a bosom friend, a thousand cups are too few. If you argue with a man, half a sentence is too much.
酒逢知己千杯少，话不投机半句多。

来自《现代汉英综合大词典》

17. Mountaineers rely on the mountains, just like those by the waterside profit from water.; If you live on a mountain, you live off the mountain; if you live by the water, you live off the water.
靠山吃山，靠水吃水。

来自《现代汉英综合大词典》

18. Mr. Smith is seeing people all morning, but if the matter is urgent I'll see if I can crowd you in.
整个上午史密斯先生都在接待来客，但如果你的事情紧急，我就看看能不能为你安排一下会面。

来自《简明英汉词典》

19. See if the frame fits to the door, and if it does, then finish making it.
看一看这门框是否与门吻合，如果吻合，就把它安装好。

来自《简明英汉词典》

20. The company is caught in a double bind. If it doesn't modernize it won't make money, but if it does modernize they'll have to make people redundant because they won't need them any more.
这家公司进退两难。不实行现代化就无法盈利，要实行现代化就会有冗员，因为公司将不再需要他们。

来自《简明英汉词典》