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初中英语――if引导的条件状语从句madebyMr.Zhong1在句子中做条件状语的从句称为条件状语从句。引导条件状语从句的连接词有：if,unless,as/solongas，once等1.if引导的条件状语从句表示在某种条件下某事很可能发生。Ifwepaymuchattentiontotheearth,we'llhaveabetterworld.注意：if还可以引导虚拟条件句，表示不可实现的条件，从句中多用一般过去时或过去完成时。Whatwouldhappeniftherewerenowater?如果没有水会怎样？2.unless引导的条件状语从句YouwillfailinEnglishunlessyouworkhard.3.as/solongas引导的条件状语从句Solongasyou'rehappy,iwillbehappy.4.once引导的条件状语从句Onceyoubegin,neverstop.提示：在条件状语从句中，用一般现在时代替一般将来时，用一般过去时代替过去将来时。Fathertoldmeifiworkedhardhewouldbuymeagift.if条件状语从句的时态练习二、用所给词的适当形式填空1.Ifyou________(feel)tired,you_______________(have)tohavearest.2.Where_______he_________(see)thefilmifhe________________(have)time?3.Ifthere__________(be)fewertrees,there_______________(be)morepollution.4.He_____________(dress)morecasuallyifhe________________(notwork)onweekends.5.IfMarcia_____________(live)alone,she___________________(keep)apetparrot.6.Lana________________(buy)anewdressiftheoldone____________(be)outofstyle.7.Thetwins______________(fight)ifthey_______________(argue).8.I____________(have)abakesaleifI_____________(need)moneyforeducation.9.Peter_____________(send)meabeautifulsouvenirifhe________________(tour)Spain.10.IfMrGreen___________(say)Iamhard-working,myparents_________(feel)glad.11.I____________(go)tothebeachifit________________(notrain)thisweek.12.__________they__________(have)amatchiftheP.E.teacher_____________(be)busy?13.He____(write)alettertohisgrandparentsifhe____(get)hisreportcardthisweek.14.Ifshe____________(get)uplate,she_____________(notcatch)theearlybus.15.Peter________(major)inEnglishifhe____(pass)theexamsinPekingUniversity.15.如果他到的晚了会发生什么事情？What_______________ifhe_____________late?16.如果努力学习，你就会取得好成绩。Ifyou___________________,you___________good_____________.17.他如果看电视太久了，他的父母会不高兴。Ifhe_________TVtoomuch,hisparents____________________unhappy.18.如果我们为他组织生日聚会，大家都会来的。Everyone________________ifwe_____________abirthdayparty__________him.19.如果明天不下雨，我会和你一起去公园的。Ifit____________________tomorrow,I______________gotothepark_________you.初中英语――if引导的条件状语从句madebyMr.Zhong220.如果她睡过头了，就会旅游迟到的。She;__________________________thetripifshe___________________.21.如果他有空，他会帮助你的。Ifhe_________________,he_________________you.22.如果Tom考试不及格，他就没有机会上高中了。Tom_________havethe________togotothe________highschoolifhe________theexams.23.你如果抄同学的作业就不能学好各门功课。You____________goodatallthesubjectsifyou______theotherstudents’homework.Ⅰ.单项选择（15分）1.Ifyou_____totheparty,you’llhaveagreattime.A.willgoB.wentC.goD.going2.Itwillbealongtime____Peter_____hiswork.A.since,hasfinishedB.after,finishesC.when,willfinishD.before,finishes.3.Whatwillfather_____usfromJapan?A.takeB.bringC.carryD.make4.Weifangisfamous______kites.A.forB.toC.onD.with5．I____hertheanswerifshe____me.A.cantell,willaskB.willtell,willaskC.wouldtell,askD.willtell,asks6.–Whatareyougoingtodotomorrow?--We’llgotothelibrarytomorrowifit___.A.isn’trainB.rainC.won’trainD.doesn’train7.—Doyouknowwhenhewillcomebacktomorrow?--Sorry,Idon’tknow.Whenhe____back,I’lltellyou.A.comesB.willcomeC.comeD.maycome8.Whatwillyoudoifyou_____totheoldfolk’shomevisit?A.goB.wentC.goingD.willgo9.IfIeat____food,I’llbeveryfat.A.toomanyB.manytooC.toomuchD.muchtoo10.I’llgivethebooktohimifhe___herenextSunday.A.willcomeB.comesC.iscomingD.came11.There____anEnglishfilminourschooltomorrow.A.isgoingtohaveB.willhaveC.isgoingtobeD.has12.Couldyoutelluswhere____？A.willthenextOlympicGamesheldB.thenextOlympicGameswillbeheldC.wouldthenextOlympicGamesbeheldD.thenextOlympicGameswouldbeheld13.Whenmymotherreturnedlastnight,I____abook.A.readB.amreadingC.wasreadingD.amgoingtoread14.What____you____whenitbegantorain?A.do,doB.were,doingC.are,doingD.did,do15.I’llwakeyouupwhenhe____back.A.willB.isgoingtocomeC.comesD.come