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Language,Ifsentences,If引导的条件状语从句,1,学习交流PPT,Ifyoucoolwater,itturnsintoice.,ifclause从句,mainclause主句,Ifsentences,if引导的条件状语从句,2,学习交流PPT,1.Ifyouheatmetal,itmelts.如果把金属加热,它就会融化。2.Waterturnsintoiceifyoucoolit.如果你冷却水,它就会变成冰。,ifclause从句,mainclause主句,从句,主句,从句,主句,从句在主句前时,_(用/不用)逗号隔开当主句在前时,则_(用/不用)逗号,不用,用,3,学习交流PPT,Ifyoudropaglass,itbreaks.,Ifyouheatice,itmelts.,Ifyoustandintherain,yougetwet.,主句和从句都用_(时态)因为if引导的条件句说的是_,一般现在时,客观事实/普遍现象,4,学习交流PPT,Actionswithdefiniteresults,读下列例句,试着自己总结if的用法:1.Ifyouheatmetal,itmelts.如果把金属加热,它就会融化。2.Waterturnsintoiceifyoucoolit.如果你冷却水,它就会变成冰。3.Ifyoustandintherain,yougetwet.如果你站在雨里,就会淋湿。4.Ifyoudropaglass,itbreaks.如果你把玻璃杯掉在地上,它就会碎。,5,学习交流PPT,由例句我们可以知道:如果if引导的条件句谈论的是一种_时,主句谓语动词便不用shall/will+动词原形,而直接用_时的动词形式。,真理/客观事实,一般现在,6,学习交流PPT,ActionswithDefiniteResults,Water_(turn)intoiceifyou_(cool)it.Ifyou_(stand)intherain,you_(get)wet.,turns,cool,stand,get,7,学习交流PPT,-b-d-g-a-h-c-f-e,ExerciseA1,8,学习交流PPT,1.Ifyou_water.2.Aballoon_it.3.Ifyou_water.4.Metal_it.5.Wood_water.6.Aglass_it.,heatice,itturnsinto,burstsifyoustickapininto,coolsteam,itturnsinto,meltsifyouheat,floatsifyouputitinto,breaksifyoudrop,ExerciseA2,9,学习交流PPT,Actionswithpossibleresults,读下列例句,总结if的用法:1.Ifheruns,hellgetthereintime.如果他跑步去,就会及时赶到那。2.Hewillhelpyouifyouaskhim.如果你请他帮忙,他会帮你的。3.Ifyoufailintheexam,youwilllethimdown.如果你考试失败了,你会让他失望的4.Ifyougetuplate,youwillbelateforschool.如果你起床晚了,上课就会迟到。,10,学习交流PPT,由例句我们可以知道:在if引导的条件状语从句中,如果从句谈论的是一个有可能发生的事实以其产生的相关结果,从句用_,主句用_.,一般现在时态,一般将来时态,(主将从现),11,学习交流PPT,I_(stay)athomeifit_(rain)tomorrow.Ifhe_(notcome),I_(go)swimmingalone.,willstay,rains,doesntcome,willgo,ActionswithPossibleResults,12,学习交流PPT,Ifyougetuplate,youwillbelateforschool.,Lookandsay,getuplate,lateforschool,13,学习交流PPT,Ifthetelephonerings,Iwillanswerit.,Lookandsay,ring,answer,14,学习交流PPT,IfIhavealotofmoney,Iwillbuyabighouse.,Lookandsay,alotofmoney,abighouse,15,学习交流PPT,hard-working,Ifsheishard-working,shewillgetgoodgrades.,getgoodgrades,Lookandsay,16,学习交流PPT,gofishing.,IfitissunnythisSunday,Illgofishing.,Lookandsay,sunnythisSunday,17,学习交流PPT,P105B,WilliamhasfiveproblemsGivehimsomeadvicefromcolumnAandB1Isometimesforgettotaketherightbooktoschool.Ifyoucheckyourtimetableeverynight,youllknowwhichbookstotake.,18,学习交流PPT,一、判断正误,如果有误,请更正1.Ifyouwilldomoreexercisethissummer,youwillbeveryfit.2.Thecandleburns,ifyoulightit.,willdodo,把逗号去掉,19,学习交流PPT,3.IwillbuildmanyschoolsforthepoorchildrenifIwinabilliondollars.4.Ifyoufreezewater,itwillturnintoice.5.Myunclevisitsthemuseumifhewillhavetime.,正确,willturnturns,visitswillvisit,willhavehas,20,学习交流PPT,If的两个意思:,If:,“如果”“是否”,引导条件状语从句,引导宾语从句,Idontknowifhewillcometomorrow.,Iwillgotothecinemaifitdoesntrain.,主现从现/主将从现,if可用将来时,21,学习交流PPT,BettywillvisittheHistoryMuseumifit_(rain)tomorrow.Benwantstoknowifit_(be)finetomorrow.,If引导的条件状语从句不用将来时,意思为“如果”。If引导的宾语从句可以用将来时,意思为“是否”。,doesntrain,willbe,是否,如果,22,学习交流PPT,Exercises:,Hewillhelpmewithmymathsifhe_free.AwasBwillbeCwouldbeDisIdontknow_hewillcometomorrow._hecomes,Illtellyou.Aif;WhetherBwhether;WhetherCif;ThatDif;If3.Pleasetellhermytelephonenumberifshe_(want)toknow.,wants,D,D,23,学习交流PPT,4.Willyoucomeandstaywithusforawhileifyou_(finish)doingyourhomework?Wangdoesntknowifthere_(be)anEnglisheveningnextweek.Mikeaskedmeifwe_(ask)anyquestionsthenextclass.Wearegoingforpicnictomorrow.IllcallWendytomakesure_.AwhytostartBwhentostartCwhattostartDwhichtostart,wouldask,finish,willbe,B,24,学习交流PPT,8.-Wouldyoupleasetellme_next?-Thinkitover.Youllfindagoodway.AwhentodoBhowtodoCwhattodoDwheretodo9.Idontknowifmyuncle_.Ifhe_,Iwillbeveryhappy.Acomes;willcomeBwillcome;willcomeCcomes;comesDwillcome;comes10.EitheryouorI_goingtoShanghai.Onlyonepersonmaygothere.AareBwereCamDwas,C,D,C,25,学习交流PPT,()11.Ifit_sunnytomorrow,I_boating.A.isgoB.willbe,goC.is,willgoD.willbe,willgo()12.-whatwillyoudoifit_tomorrow,-IllstayathomeandwatchTV.A.rainB.rainsC.willrainD.israining,C,B,26,学习交流PPT,()13.Ifhe_,I_himthetime.A.comes,tellB.willcome,willtellC.comes,willtellD.willcome,tell()14.Ifit_,it_cold.A.snows,willbeB.snows,isC.willsnow,willbeD.willsnow,is()15.Ifyou_astoneintowater,it_.A.put,sinksB.put,willsinkC.willput,sinksD.willput,willsink,C,B,A,27,学习交流PPT,11.He_(help)mewithmymathsifhe_(be)free.12.IdontknowifJim_tomorrow.Ifhe_,Iwillbeveryglad.(come)13._(tell)hermytelephonenumberifshe_(want)toknow.14.Ifit_(be)sunnytomorrow,I_(go)boating.15.Ifyou_(boil)water,it_(turn)intosteam.16.Youcan_(travel)aroundtheworldifyou_(have)money.,willhelp,is,willcome,comes,Tell,wants,is,willgo,boil,turns,travel,have,28,学习交流PPT,Translatethefollowingsentences:1.如果你请他帮忙,他会帮你的。Ifyouaskhim,hewillhelpyou.2.如果你考试不及格,你会让他失望的。Ifyoufailintheexam,youwilllethimdown.3.如果你作业做完了就可以回家了。Ifyouhavefinishedthehomework,youcangohome4.如果熊陷入危险,它们就攻击人。Ifbearsareindanger,theyattackpeople.5.如果我早早地到那里,我就可以快点看病。IfIgetthereearly,Icanseethedoctorquickly.,29,学习交流PPT,翻译下面句子。1.如果明天不下雨的话,我就和同学们去动物园。2.如果周六你去购物的话,我就去。,Ifitdoesnt
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