if开头的句子？以if开头的英语句子10句
一、英语中用if开头的句子结构
If可以引导宾语从句表示“是否”的含义，也可以引导条件状语从句表示“如果”的含义。你要问时态的话那就要搞清楚它在引导条件状语从句时所用的虚拟语气的问题了。
a.与现在事实相反的假设
条件从句主句
一般过去时（be用were） should（would）等+动词原形
例如：If they were here, they would help you.如果他们在这儿，会帮助你的。
含义：They are not here, they can’t help you.
b.与过去事实相反的假设
条件从句主句
过去完成时 should（would）等+ have+过去分词
例如：If he had come yesterday, I should/ would have told him about it.如果他昨天来的话，我会把这件事告诉他的。
含义：He did not come yesterday, so I did not tell him about it.
c.表示对将来不大可能发生的事情的假想
条件从句主句
一般过去时 should/would等+动词原形
were+不定式
should+动词原形
例如：If you succeeded, everything would be all right.如果你将来成功了，一切都会好的。
If you should succeed, everything would be all right.
If you were to succeed, everything would be all right.
含义：You are not likely to succeed, everything will be what it is now.
二、用IF造40个简单的句子
Whatisto becomeofmeifyougo away?
如果你走的话，我的结果将是怎样呢?
2.Ifhewinks atyou,youmaywink backas well.
如果他向你使眼色的话，你也可以使眼色以示回答。
3.Ifyoutakethismedicine,allyoursymptomswillfallaway.
如果你使用这种药物，你的所有症状将会消失。
4.Ishallwritetoyouifanythingcomesup.
如果发生了什么事情我将写信告诉你。
5.Ifheis no good,flunkhim.
如果他表现不好，给他不及格。
6.Ifyoucannotdoit,Iwillunderstand.
如果你不能做这件事，我可以谅解。
7.Try itifyoudare.
如果你敢，你就试试看。
8.Iwill notwearthis dressifyouobject toit.
如果你不喜欢这件衣服，那我就不再穿它了。
9.Sheblusteredout whatshewoulddoifshecaughtme.
她恫吓说，如果她抓住我，她会怎么办。
10.Ifyougraspthis rope,Iwillpullyouup.
如果你抓住这根绳子，我可把你拉起来。
11.Youcanhiveoffsomeof theworktousifnecessary.
如果必要的话，你可以把部分工作分给我们做。
12.Ifweminglewith thecrowd,weshall notbenoticed.
如果我们混在人群里，就不会被注意到了。
13.Ifyoucan'tdothe jobyourself,passitontosomeone whocan.
如果你自己不能完成这项工作的话，把它交给能做的人去做。
14.Ifyouaskhim,hewillhelpyou.
假如你向他请求，他会帮助你。
15.IfIwereyou,Iwouldhavefailed.
如果我是你，我可能会失败的。
16.Ifyoupolishthearticle,wewillprintitinthenewspaper.
如果你把这篇文章润色一下，我们就在报纸上发表它。
17.Seeif youcangowithus.
考虑一下，看是否能和我们一起去。
18.Scratchyourselfifyouitch.
如果你感到痒，就搔好了。
19.Ifyoudomesticatethisraccoon,itwillhavetroublelivingin thewild.
如果你驯养这只浣熊，它生活在野外将会有困难。
20.Ifyouwant to meetthem,Icanarrangeit.
你如果想见他们，我可以安排会见。
21.Youcangetanythingoftheseprizes,ifyoucanstringthisflagup on thetopofthe flagpole.
如果你能把这面旗子挂到旗杆顶部，你就可以拿这些奖品中的任何一件。
22.Wecan gainsometimeifwecutacrossthisfield.
我们如果抄近路穿过这片田野可以省下一些时间。
23.Ifyoucanuseawordcorrectlyandeffectively,youcomprehendit.
你如果能正确和有效地使用一个字，你就了解它了。
24.Youhaveto keepafteryoursonifherefusesto behousebroken.
如果你儿子不服管教的话，你必须整天跟在他的身边。
25.Itwillbeclearerifyoudeletethe lastparagraph.
如果你删去最后那一段，它将会更清楚。
26.Ifyoulikeit,takeit,then.
如果你喜欢，那就买吧!
27.Ifyoulook atthe endofyournose,youreyesconverge.
如果你看着你的鼻尖，你的两眼就向一点集中。
28.Ifwedotheworkturn and turnabout,wecanfinishitquickly.
如果我们轮换着做这个工作，我们能很快地把它完成。
29.Theywillallocatefundstoyouifyourequisitionit.
如果你提出书面申请，他们就会拨给你资金。
30.Mortgages and particularly mortgage securities could not be soldifthere were no buyers.
31.It's asifsomeone was trying to parody right-wing narratives of government bureaucracy and incompetence.
32.He made a wisecrack about dealing with deflation,ifnecessary, by dropping dollar bills from aircraft.
33.The broad message is the same, evenifit is a slightly larger contraction than expected.
34.Ifonly it ran full Windows 8-- it might have won based on hardware alone.
35.Ifyou want to lower your audit profile by showing a profit, disqualify possible expenses.
36.Ifyou are visiting for business, you will find pleasure sneaks up on you.
37.Soifhe moves ahead, it looks like Fatah could be having an election with itself.
38.Not trueifyou owned Microsoft or Pfizer, where there are really no takeover prospects.
39.Ifyou were talking about all the other aspects, the cost would be even greater.
40.You can get all the nutrition you need for much less moneyifyou shop carefully.
三、IF开头英语句子 3句例句
If可以引导宾语从句表示“是否”的含义，也可以引导条件状语从句表示“如果”的含义。你要问时态的话那就要搞清楚它在引导条件状语从句时所用的虚拟语气的问题了。
a.与现在事实相反的假设
条件从句主句
一般过去时（be用were） should（would）等+动词原形
例如：If they were here, they would help you.如果他们在这儿，会帮助你的。
含义：They are not here, they can’t help you.
b.与过去事实相反的假设
条件从句主句
过去完成时 should（would）等+ have+过去分词
例如：If he had come yesterday, I should/ would have told him about it.如果他昨天来的话，我会把这件事告诉他的。
含义：He did not come yesterday, so I did not tell him about it.
c.表示对将来不大可能发生的事情的假想
条件从句主句
一般过去时 should/would等+动词原形
were+不定式
should+动词原形
例如：If you succeeded, everything would be all right.如果你将来成功了，一切都会好的。
If you should succeed, everything would be all right.
If you were to succeed, everything would be all right.
含义：You are not likely to succeed, everything will be what it is now.
四、以if开头的英语句子10句
a.与现在事实相反的假设
条件从句主句
一般过去时（be用were） should（would）等+动词原形
例如：If they were here, they would help you.如果他们在这儿，会帮助你的。
含义：They are not here, they can’t help you.
b.与过去事实相反的假设
条件从句主句
过去完成时 should（would）等+ have+过去分词
例如：If he had come yesterday, I should/ would have told him about it.如果他昨天来的话，我会把这件事告诉他的。
含义：He did not come yesterday, so I did not tell him about it.
c.表示对将来不大可能发生的事情的假想
条件从句主句
一般过去时 should/would等+动词原形
were+不定式
should+动词原形
例如：If you succeeded, everything would be all right.如果你将来成功了，一切都会好的。
If you should succeed, everything would be all right.
If you were to succeed, everything would be all right.
含义：You are not likely to succeed, everything will be what it is now.