if条件句

IreneIf非真实条件句——与现在事实相反IfIanswerIfthetelephonerings,Iwillanswerit.HehungrywillIfheishungry,hewilleattheapples.IfIfhehasalotofmoney,hewillbuyabighouse.If…meet…,…love…IfImeetthelovelygirl,Iwillloveher.定义：If真实条件句（SentencesofRealCondition)提出的条件是可能实现的句子GrammarFocus:以if引导的条件状语从句：当主句为一般将来时,从句为一般现在时（主将从现）.WhatistheIfAdverbialclauseofcondition?Andhowtouseit?2011-10-13Whatwouldyoudo,ifyouwerethere?IfIwerethere,Iwould….2011年10月13日，2岁的小悦悦(本名王悦）在佛山广佛五金城相继被两车碾压，7分钟内，18名路人路过但都视而不见，漠然而去.2011年10月21日，小悦悦经医院全力抢救无效，在零时32分离世。Everythingdependson“if”,youwerenotthere,soyoucouldn’thelpthelittlegirl.IfIwerethere,Iwouldcall120.IfLilywerethere,shewouldcall120.IfTomwerethere,hewouldcall120.Ifwemettheaccident,wewouldhelpthegirl.Ifeveryonecouldgiveahandtoothers,theworldwouldbecomebetterinthefuture.Ifapologywereuseful,wewouldnotneedthepolice.道明寺定义：非真实条件句表示所提出的假设实现可能性极小或与事实相反主句＋would/could/should/might+V,if+过去时（be动词都用were)Howtouse?Iftheywerehere,theywouldhelpyou.含义：Theyarenothere,theycan’thelpyou.Whatwouldyoudoifyouwonthelottery?IfIwonthelottery,Iwould…IfIhadamagiclamp,Iwouldflyinthesky.IfIwereSnowWhite,Iwouldnoteattheapple.IfIhadamillionnow,Iwouldtravelaroundtheworld.IfIhaveamillion,Iwilltravelaroundtheworld.CompareandfindthedifferenceIfIhavetimetomorrow,Iwillgowithyou.IfIwereabird,Iwouldflyinthesky.afactawishIfIhavealotofmoney,Iwilltravelaroundtheworld.IfIhadalotofmoneynow,Iwouldtraveltheworld.afactawishIf条件句:真实条件句和非真实条件句两种。a.真实条件句：条件是真的或有可能实现的,采用陈述语气。b.非真实条件句：条件是无法实现或几乎无法实现的,采用虚拟语气。条件从句If从句的谓语形式主句的谓语形式真实条件句一般现在时will+V非真实条件句（现在）一般过去时be都用werewould/could/should/might+V条件状语从句真实条件句非真实条件句（虚拟语气的一种）虚拟语气Subjunctivemooda.Ifthey____(be)here,they__________(take)youradvice.b.Iftheworld-war_____(burst)outagain,what_____________(happen)toourpeopleonearth?werewouldtakeburstwouldhappenPRACTICE1:Fillintheblanks.1.我如果有时间肯定会去的。2.我要是懂德语，我就会给你读这篇文章。3.如果他在这里，我们会问他的。4.如果明天放假，那该多好。IwouldcertainlygoifIhadtime．IfIknewGerman，Iwouldreadthepapertoyou.Ifhewerehere，wecouldaskhim．Itwouldbeniceifitwereaholidaytomorrow.Translatethesentences.2.与过去的事实相反从句的谓语用had＋过去分词,构成IfI(we,you,he,they)＋had＋过去分词的形式；主句的谓语用should(第一人称)/would(第二、三人称)/could/mighthave＋动词过去分词。Ifhe__________morecarefully,he_________________thecaraccidentyesterday.haddrivenwouldnothavehadIfI________howtoswim,I__________________trappedinthisisland.hadlearntwouldnothavebeenIfhe__________morecarefully,he_________________thecaraccidentyesterday.haddrivenwouldnothavehada.IfTom________(be)morecarefulintheexam,he________________(pass)italready.b.Ifyou_______(get)upearlier,you________________(catch)thefirsttrain.hadbeenwouldhavepassedhadgotwouldhavecaughtPRACTICE2:Fillintheblanks.c.IfI_______(meet)youyesterday,we______________(go)totheconcerttogether.hadmetwouldhavegone3.与将来事实相反从句的谓语用IfI(we,you,he,they)＋动词过去式或weretodo或shoulddo形式,主句谓语用should(第一人称)/would(第二、三人称)/could/might＋动词原形。Ifhegotupearly,hewouldbeontime.假如他来了,我们对他说什么呢？Ifheweretocome,whatshouldwesaytohim.假如他看见我,就会认识我。Ifheshouldseeme,hewouldknowme.a.Ifthere________(be)nonaturalresourceanymore,we___________(make)useofnuclearpower.b.What____________(happen)ifyou____________(getup)toolatetomorrow?shouldbeshouldmakewouldhappenshouldgetupPRACTICE3:Fillintheblanksc.IfRobots_____________(control)theworldsomeday,here________(be)nofriendship.weretocontrolwouldbe主句与从句的动作发生在不同的时间,这时主从句位于动词的虚拟语气形式因时间不同而不同,这叫做混合条件句。例句中从句与过去事实相反,主句与现在事实相反Ifyouhadaskedhimyesterday,youwouldknowwhattodonow.Ifthestaffhadbeenmorecareful,themallwouldnotbeonfirenow.条件从句If从句的谓语形式主句的谓语形式现在过去时(were)would/could/should/might+V.(原)一.虚拟语气在条件状语从句中的用法。条件从句If从句的谓语形式主句的谓语形式过去过去完成时would/could/should/might+have+p.p.条件从句If从句的谓语形式主句的谓语形式未来1.过去时2.should+V.3.weretodowould/could/should/might+V.(原)