初中条件状语从句-精讲和练习含答案 5页

初中英语：条件状语从句一.条件状语从句的概念条件状语从句，即在某种条件下，一件事情可能发生。在英语屮由连接词if或unless等引导的状语从句叫做条件状语从句。条件是指某一件事情实现之后（状语从句中），一件事情（主句）才能发生，通常译作“假如，只要，如果”等意思。条件状语从句屮，主从句的时态要遵循“主将从现”的原则。即，主句是将来时态时，从句用一般现在时代替将来时态。二•条件状语从句的引导词l.Ifconj・如果，假如Ifyouaskhim,hewillhelpyou.如果你请他帮忙，他会帮你的。Ifyoufailintheexam,youwilllethimdown.如果你考试不及格，你会让他失望的。2.unlessconj•除非，若不，除非在的时候（if...not...）Youwillfailtoarrivethereintimeunlessyoustartearlier.如果你不早点动身，你就不能及时赶到那儿。Unlessitrains,thegamewillbeplayed.除非下雨，比赛将照常进行。3.so/aslongasconj•只要Youmayborrowmybookaslongasyoukeepitclean.只要你保持书的清洁，你就可以把我的书借去。三.关于条件句的时态，常见的有以下三种情况：1、条件状语从句的主句是一般将来时，那么从句常常用一般现在时。WhenIgrowup,I'llbeanurseandlookafterpatients.我长大后要当一名护士，照顾病人。2、如果主句是祈使句，那么从句通常要用一般现在时。Ifyouwanttohaveachat,callmeup.如果你想聊天，打我电话。3、如果主句是含有情态动词时，根据需要从句多用一般现在时。Youshouldbequietwhenyouareinthereadingroom.在阅览室时应保持安静。四.知识拓展1在以when,before,assoonas等引导的时间状语从句，也适用“主将从现”原则，即如果主句是一般将来时，从句则用一般现在时。I'lltellherthegoodnewswhenshecomesback.当她回来的时候，我将把这个好消息告诉她。shewillgiveyouacallassoonasshereturns.她一*回来就会给你电话。2・If条件句的同义句：祈使句，and/or+将来时态的陈述句。Workhard,andyouwillmakegreatprogress.=\nIfyouworkhard,youwillmakegreatprogress.如果你努力学习，你才会取得大的进步。Hurryup,oryouwillbelate.=Ifyoudon'thurryup.youwillbelate>如果你不快点，你就要迟到了。\n条件状语从句练习精讲(含答案)I.单项选择1・Ifyoutotheparty,youTlhaveagreattime・A.willgoB.wentC・goD.going2.ItwillbealongtimePeterhiswork.A.since,hasfinishedB.after,finishesC・when,willfinishD・before,finishes.3.WhatwillfatherusfromJapan?A・takeB.bringC・carryD.make4.WeifangisfamouskitesA.forB.toC.onD.with5•Ihertheanswerifsheme.A.cantell,willaskB.willtell,willaskC.wouldtell,askD.willtell,asks6.一Whatareyougoingtodotomorrow?・-WeUlgotothelibrarytomorrowifit・A.isn'trainB・rainC.won'trainD.doesn'train7.—Doyouknowwhenhewillcomebacktomorrow?一Sorry,Idon'tknow.Whenheback,Tiltellyou.A.comesB.willcomeC.comeD.maycome8.Whatwillyoudoifyoutotheoldfolk'shomevisit?A.goB.wentC.goingD・willgo9.IfIeatfood,Fllbeveryfat.A.toomanyB.manytooC・toomuchD・muchtoo10.TilgivethebooktohimifheherenextSunday.A.willcomeB.comesC.iscomingD・came11・ThereanEnglishfilminourschooltomorrow・A・isgoingtohaveB.willhaveC.isgoingtobeD.has12.Couldyoutelluswhere?A.willthenextOlympicGamesheldC・wouldthenextOlympicGamesbeheld13.Whenmymotherreturnedlastnight,IB・thenextOlympicGameswillbeheldD・thenextOlympicGameswouldbeheldabook・A.readB.amreadingC・wasreadingD.amgoingtoread14.Whatyouwhenitbegantorain?A.do,doB.were,doingC・are,doingD・did,do15.Tilwakeyouupwhenheback.A.willB.isgoingtocomeC・comesD.comeAnswers:1…5CDBAD6—10DAACB11—15CBCBC二、用所给词的适当形式填空1.Ifyou(feel)tired,you(have)tohavearest.2.Wherehe(see)thefilmifhe(have)time?3.Ifthere(be)fewertrees,there(be)morepollution.4.He(dress)morecasuallyifhe(notwork)onweekends.5.IfMarcia(live)alon®she(keep)apetparrot.\n1.Lana(buy)anewdressiftheoldone(be)outofstyle.2.Thetwins(fight)ifthey(argue)・8.1(have)abakesaleifI(need)moneyforeducation.9.Peter(send)meabeautifulsouvenirifhe(visit)Spain.10.IfMr.Green(say)Iamhard・working,myparents(feel)glad.11.1(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.Answers：1feel,willhave2willseehas5lives,willkeep6willbuy,is9willsend,visits10says,willfeel12Willhaveis13willwrites,gets15.Peter(major)inEnglishifhe(pass)theexamsinPekingUniversity・3are,willbe4willdresses,doesn'twork7willfight,argue8willhave,need11willgo,doesn'train14gets,won't15willmajor,passesin完成句子1.如果他到得晚了，会发生什么事情？Whatifhelate?2.如果努力学习，你就会取得好成绩。Ifyou,yougood3.他如果看电视太久了，他的父母会不高兴。unhappy.IfheTVtoolong,hisparents4.如果我们为他组织牛日聚会，大家都会來的。Everyoneifweabirthdaypartyhim.5.如果明天不下雨，我会和你一起去公园的。Ifittomorrow,Igototheparkyou.6.如果她睡过头了，就会上学迟到的。Sheifshe7.如果他没有空，他不会帮助你的。Ifhe,heyou.&如果Tom考试不及格，他就没有机会上高中了。Tomhavethetogotothehighschoolifhetheexams.9.如果这个男孩打烂窗户，屋主会对他生气。Iftheboy,thehouseowner10.如果明天不下雨，我就出去野餐。Answers1・washappened,camelate?4willcome,hold,for7isiVlfree,won'thelp2workhard,willget,success.3.watch,willbe5doesn'train,will,with6willbelateforschool,sleepslate8worftchancefails9breaksthewindow,willbeangryathim10.Ifitdoesn'traintomorrow,Iwillgoouttohaveapicnic.\nI.Ifyoufeeltired,youshouldhavetohavearest.2.Wherehasheseenthefilmifhehastime?3・Iftherearefewertrees,therewillbemorepollution.2.Hewilldressmorecasuallyifhedoesn'tworkonweekends.3.IfMarcialivesalone,sheshouldkeep)apetparrot.4.Lanashouldbuyanewdressiftheoldoneisoutofstyle.5.Thetwinswillfightiftheyargue.8.1willhaveabakesaleifIneedmoneyforeducation.9.PeterwillsendmeabeautifulsouvenirifhetoursSpain.10-IfMrGreensaysIamhard-working,myparentswillfeelglad.II.1willgotothebeachifitdoesn'trainthisweek.12.Willtheyhaveamatch讦theP.E.teacherisbusy?13.Hewillwritealettertohisgrandparentsifhegetshisreportcardthisweek.14.Ifshegetsuplate,shewon'tcatchtheearlybus.15.PeterwillmajorinEnglishifhepassestheexamsinPekingUniversity・Translate1.如果他到得晚了会发生什么事悄？2.如果努力学习，你就会取得好成绩。3.他如果看电视太久了，他的父母会不高兴。4.如果我们为他组织生日聚会，大家都会来的。5.如果明天不下雨，我会和你一起去公园的。6.如果她睡过头了，就会旅游迟到的。7.如果他有空，他会帮助你的。8.如果Tom考试不及格，他就没有机会上高中了。9.如果她不努力学习，不能学好各门功课°10.如果这个男孩打烂窗户，屋主会对他生气。1・Whatwillhappenifhecomeslate?2.Ifyouworkhard,youwillgetgoodmarks.3.IfhewatchesTVtoolong,hisparentswillbeunhappy.4.Everyonewillcomeifweholdabirthdaypartyforhim.5.Ifitdoesn'traintomorrow,Iwillgototheparkwithyou.6.Hewilllosechancetothetripifshesleepsove匚7・Ifhehastime,hewillhelpyou.&Tomwon'thavethechancetogotothehighschoolifhefailstheexams・9.Sheworftbegoodatallthesubjectsifdoesn'tstudyhard・10.Iftheboybreaksthewindow,thehouseownerwillbeangryathim.