九年级英语13单元课件

Unit13We’retryingtosavetheearth!SectionA1a-2c（第1课时）Factoriesproducetoomuchdangeroussmoke.Thetrafficproducestoomanygases.Somepeoplesmokeinpublicplaces.airpollutionThefactoriesthatburncoalpollutetheairwithalotofblacksmoke.n.煤炭Factoriesputwasteintotheriver.waterpollutionnoisepollutionTherearemorecarsontheroad.litterv.乱扔n.垃圾rubbish，waste垃圾，废弃物Peopleshouldthrowawaylitterinthebin.n.垃圾箱landpollution1aHerearesomewordsrelatedtodifferentkindsofpollution.Writethemintheboxbelow.Thenaddmorewords.noisepollution________________________________________________carsairpollution____________________________________________waterpollution________________________________________________loudmusicplanesmobilephonesfactoriescarssmokingshipsfactorieslitteringrubbishbuildinghousesbuildinghousesloudmusiccarsrubbishplaneslitteringshipsfactoriessmokingbuildinghousesmobilephones1b.Listentothetapeandcompletethesentences.Whatwastheproblem?Theriverwas___________.Eventhebottom(底部）oftheriverwasfullof_________.Therewerenomore_____forfishermentocatch.Whatcausedtheproblem?Peoplearethrowing______intotheriver.Factoriesareputting______intotheriver.Howshouldtheproblembesolved?Weshouldwritetothe_________andaskthemto_________thefactories.Everyoneshouldhelpto________theriver.reallydirtyrubbishfishlitterwastegovernmentclosedowncleanupMark:Theriverwasdirty.Eventhebottomoftheriverwasfullofrubbish.Tony:Butitusedtobesoclean!Mark:Yes,butpeoplearelitteringintheriver.Tony:Everyoneinthistownshouldplayapartincleaningitup!Role-playtheconversation.Thenmakeyourownconversationsaboutthekindsofpollutionin1a.1c2aListentotheinterview.CirclethekindsofpollutionthatJasonandSusantalkabout.A.landpollutionB.airpollutionC.noisepollutionD.waterpollution1.Theairisbadlypollutedbecausethereare________ontheroadthesedays.2.Factoriesthatburncoalalso______theairwithalotofblacksmoke.3.Thereisalsotoomuchrubbishandwaste.People___________________thingseveryday.4.Peoplearealsolitteringin____________likeparks.Thisturnsbeautifulparksintouglyplaces.morecarspollutearethrowingawaypublicplaces2bListenagainandcompletethesentences.1.Wearetryingtosavetheearth.我们正在努力拯救地球。【解析】trydoingsth尝试做某事（不一定付出很大努力）trytodosth尽力做某事（强调付出一定的努力设法完成）想一想?尽某人最大的努力做某事try_______________2.Butitusedtobesoclean.但它过去是如此干净。【解析】usedto的意思是___________,其中to是不定式符号，不是介词，所以其后要接____________。beusedto的意思是__________，其中to是介词，其后要接__________【合作探究】one’sbesttodosth.习惯干某事过去常常做某事动词原形doing2.He____gooutwithhisparents,butnowhe____stayingathomealone.A.usedto;isusedtoB.isusedto;usedtoC.useto;isusedtoD.isusedto;isusedto√LanguagePoints1.trytodo=tryone’sbesttodo努力去做某事2.rubbish,litter,waste垃圾,废物3.thebottomoftheriver河底4.befullof充满……5.fisherman-fishermen渔民6.throwlitterintotheriver把垃圾扔到河里7.asksb.todo要求某人干某事8.closedownthefactories关闭工厂9.cleanup打扫10.usedtobe…过去是…11.playapartin…参与，在……中扮演角色12.throwaway扔掉，抛弃13.turn…into把……变成……•Reviewpresentprogressive(现在进行时）,passivevoice（被动语态）,usedto用法Thinkaboutwaysofprotectingtheenvironment.1.Weshouldnotthrow______（垃圾）intheriver.2.Theteacheraskedustofindawaytopickupthecoinsatthe_______（底部）ofthebottle.3.Therearenomorefishfor__________（渔夫）tocatchintheriver.【当堂检测】litterbottomfishermanIII.根据汉语意思完成下列句子。1.工厂正在往河里排放废物。Factories_____________________intheriver.2.两年前这条河被污染了。Theriver__________________twoyearsago.3.甚至河底满是垃圾。Even______________________theriverwasfullofrubbish.waspollutedarepouringwastethebottomof•1.Reviewthenewwordsandexpressionsyou’velearnedtoday.•2.Makeaposter.Talkabouthowtoprotectourenvironment,findoutasmanywaystosolvepollutionproblemsaspossible.