2023学年完整版八年级上册Unit10Ifyougototheparty,you

if引导的条件状语从句（讲义）状语用来表示行为发生的时间、地点、目的、方式、程度等，通常由副词或介词短语充当，也可由一个句子充当。IsleptathomeyesterdaybecauseIhadabadcold.状语从句状语从句指句子作状语。状语从句一般由连词(从属连词)引导。Iwillgotoschoolbybiketomorrowifitissunny.Grammarfocus—IthinkI’lltakethebustotheparty.—Ifyoudo,you’llbelate.Ifyoutakethebustotheparty,you’llbelate.—IthinkI’llstayathome.—Ifyoudo,you’llbesorry.Ifyoustayathome,you’llbesorry.—Whatwillhappeniftheyhavethepartytoday?—Iftheyhaveittoday,halftheclasswon’tcome.—Shouldweaskpeopletobringfood?—Ifweaskpeopletobringfood,they’lljustbringpotatochipsandchocolate.if在本单元句中意为“ ； ”，用于引导 。if引导的是一个完整的句子，所以一定要有主谓，成为从句，另一个句子则成为主句。Ifyougothere,I’llgo,too.Wewillgohikingifitdoesn’traintomorrow.IfBobleavestomorrow,Iwillholdapartyforhimtonight.if引导的条件状语从句既可以放在主句前，也可放在主句后。但是如果放在主句前即句首时从句后面要用 与主句隔开。Youwillkeephealthyifyoudomoreexercise.Ifyoudomoreexercise,youwillkeephealthy.时态：if引导的条件状语从句用 表示将来，主句可以使用一般将来时，含有情态动词的句子或者祈使句。主将从现IfyoupracticespeakingEnglishmore,youwilllikeitbetter.IfshegoestoNewYorktomorrow,Iwillgothere,too.Mysisterwillbeveryhappyifourunclecomesnextweek.练习：IfNancy theexam,shewillgotoAustraliaforEnglishpass B.passed C.passes D.willpassIftheweather fine,we haveasportsmeetingnextweekend.A.willbe;willB.is;will C.was;wouldD.was;will主情从现Ifyougetupatsixtomorrowmorning,youcancatchthefirstbus.IfyougotostudyinAmericanextyear,youmustlearnEnglishhard.主祈从现Let’sgooutforawalkifitdoesn’traintomorrow.Ifyouseeasnakeintheforest,don’tmove!unless也可引导条件状语从句，表示“如果不，除非”UnlesshecomeshereinanIwillgotherealone.Ifhedoesn’tcomehereinanIwillgotherealone.Youwillfeelworseunlessyougotoseethedoctorrightnow.Youwillfeelworseifyoudon’tgotoseethedoctorrightnow.练习： youreadit,youcan’timaginehowinterestingthestoryis.A.Unless B.Because C.Although D.If—PleasegiveAlicethestorybook yousee—Allright.unless B.or C.but D.ifExercises一、单项选择( )1.Studyingingroupsisnecessary youwanttodowellinschool.if B.until C.unless D.though( )2.—Willhelpmewiththetrouble?—Iwon’t youtellmethetruth.A.if B.but C.after D.unless( )3.IfBob awayfromthejunkfood,hewillbeingoodhealth.A.stay B.willstay C.stays D.stayed( )4.Ifthegame,we’llgivehimasurprise.A.win B.wins C.won D.winning( )5.gototheparkifit tomorrow.A.won’train B.don’train C.doesn’train D.rain( )6.Ifyou’remorecareful,you muchA.do B.willdo C.aredoing D.did( )7.Ifthere nobuyingandsellingofanimals,there nokillinginnature.A.is;willbe B.willbe;willbeC.is;is D.willbe;is( )8.I’mwaitingformyfriend.he ,I swimmingalone.A.doesn’tcome;go B.won’tcome;goC.won’tcome;willgo D.doesn’tcome;willgo二、翻译如果明天不下雨，我会去看你的。Ifit tomorrow,I you.Mary不为考试做准备，她会不及格。IfMary theexam,she failtheexam.如果你不告诉我原因，我会告诉妈妈这件事。我不会去医院的，除非你和我一起去那儿。【参考答案】Grammarfocus逗号一般现在时主将从现练习：C Bunless练习：A DExercises一、单项选择1-5ADCBC 6-8BA