if引導(dǎo)的條件狀語從句(講義及解析)

if引導(dǎo)的條件狀語從句（講義及解析）狀語用來表示行為發(fā)生的時(shí)刻、地點(diǎn)、目的、方式、程度等，通常由副詞或介詞短語充當(dāng)，也可由一個(gè)句子充當(dāng)。IsleptathomeyesterdaybecauseIhadabadcold.狀語從句狀語從句指句子作狀語。依照其作用可分為時(shí)刻、地點(diǎn)、緣故、條件、目的、結(jié)果、讓步、方式等從句。狀語從句一樣由連詞（從屬連詞）引導(dǎo)。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在本單元句中意為“；”，用于引導(dǎo)即if引導(dǎo)的是一個(gè)完整的句子，因此一定要有主謂，成為從句，另一個(gè)句子則成為主句。Ifyougothere,I'llgo,too.Wewillgohikingifitdoesn'traintomorrow.IfBobleavestomorrow,Iwillholdapartyforhimtonight.if引導(dǎo)的條件狀語從句既能夠放在主句前，也可放在主句后。然而假如放在主句前，即句首時(shí)，從句后面要用與主句隔開。Youwillkeephealthyifyoudomoreexercise.Ifyoudomoreexercise,youwillkeephealthy.時(shí)態(tài)：if引導(dǎo)的條件狀語從句用表示今后，主句能夠使用一樣今后時(shí)，含有情態(tài)動詞的句子或者祈使句。主將從現(xiàn)IfyoupracticespeakingEnglishmore,youwilllikeitbetter.IfshegoestoNewYorktomorrow,Iwillgothere,too.Mysisterwillbeveryhappyifourunclecomesnextweek.練習(xí)：IfNancytheexam,shewillgotoAustraliaforEnglishstudy.passB.passedC.passesD.willpassIftheweatherfine,wehaveasportsmeetingnextweekend.A.willbe;willB.is;willC.was;wouldD.was;will主情從現(xiàn)Ifyougetupatsixtomorrowmorning,youcancatchthefirstbus.IfyougotostudyinAmericanextyear,youmustlearnEnglishhard.主祈從現(xiàn)Let'sgooutforawalkifitdoesn'traintomorrow.Ifyouseeasnakeintheforest,don'tmove!unless也可引導(dǎo)條件狀語從句，表示“假如不，除非”Unlesshecomeshereinanhour,Iwillgotherealone.Ifhedoesn'tcomehereinanhour,Iwillgotherealone.Youwillfeelworseunlessyougotoseethedoctorrightnow.Youwillfeelworseifyoudon'tgotoseethedoctorrightnow.練習(xí)：youreadit,youcan'timaginehowinterestingthestoryis.A.UnlessB.BecauseC.AlthoughD.If—PleasegiveAlicethestorybookyouseeher.—Allright.unlessB.orC.butD.ifExercises一、單項(xiàng)選擇()1.Studyingingroupsisnecessaryyouwanttodowellinschool.ifB.untilC.unlessD.though()2.—Willyouhelpmewiththetrouble?—Iwon'tyoutellmethetruth.A.ifB.butC.afterD.unless()3.IfBobawayfromthejunkfood,hewillbeingoodhealth.A.stayB.willstayC.staysD.stayed()4.IfTomthegame,we'llgivehimasurprise.A.winB.winsC.wonD.winning()5.We'llgototheparkifittomorrow.A.won'trainB.don'trainC.doesn'trainD.rain()6.Ifyou'remorecareful,youmuchbetter.A.doB.willdoC.aredoingD.did()7.Iftherenobuyingandsellingofanimals,therenokillinginnature.A.is;willbeB.willbe;willbeC.is;isD.willbe;is()8.I'mwaitingformyfriend.Ifhe,Iswimmingalone.A.doesn'tcome;goB.won'tcome;goC.won'tcome;willgoD.doesn'tcome;willgo二、翻譯假如改日不下雨，我會去看你的。Ifittomorrow,Iyou.假如Mary不為考試做預(yù)備，她會不及格。IfMarytheexam,shefailtheexam.假如你不告訴我緣故，我會告訴媽媽這件事?！緟⒖即鸢浮縂rammarfocus假如；假如；條件狀語從句逗號一樣現(xiàn)在時(shí)主將從現(xiàn)練習(xí)：CBunless練習(xí)：ADExercises一、單項(xiàng)選擇1-5ADCBC6-8BA