Unit 13 Section A （1a-2d）课件-人教版九年级英语全册

Unit13We’retryingtosavetheearth!SectionA(1a~2d)SectionA（1a~2d）ObjectivesTotalkaboutairpollution,waterpollutionandsoundpollution.Tothinkaboutwaysofprotectingtheenvironment.Tolearnthenewwords:1.Howmanykindsofpollutionarethereinourdailylife?2.Whyshouldweprotecttheenvironment?3.Whatcanwedotosavetheearth?FreetalkTheearthispolluted.Lead-inairpollutionThefactoriesthatburncoalpollutetheairwithalotofblacksmoke.n.煤炭Factoriesputwasteintotheriver.waterpollutionnoisepollutionTherearemorecarsontheroad.litter

v.乱扔

n.垃圾Rubbish，waste垃圾，废弃物Peopleshouldthrowawaylitterinthebin.n.垃圾箱landpollutionThe

world’sproblemEndangeredanimalPollutiondesertificationNaturaldisastersWhatkindofpollutionarethey?airpollutionnoisepollutionwaterpollutionLeadin1aHerearesomewordsrelatedtodifferentkindsofpollution.Writethemintheboxbelow.Thenaddmorewords.loudmusiccarsrubbishplaneslitteringshipsfactoriessmokingbuildinghousesmobilephonesnoisepollutionairpollutionwaterpollutionloudmusic,planes,buildinghouses,mobilephonescars,factories,smoking,buildinghousesrubbish,littering,ships,factoriesNowtrytoaddmorewords.noisepollutionairpollutionwaterpollutionmachinescrowdsvehiclesburningpowerplantsnucleardisposalsewageindustrialwastepesticidesPracticeWhatdoesthispictureshow?Waterpollutionhasbecomeaseriousproblem.1aHerearesomewordsrelatedtodifferentkindsofpollution.Writethemintheboxbelow.Thenaddmorewords.carsfactoriessmokingbuildinghousesloudmusicplanesbuildinghousesmobilephonesrubbishlitteringshipsfactories1bListenandcompletethesentences.Whatwastheproblem?Theriverwas_____________.Eventhebottom(n.底部)oftheriverwasfullof_________.Therewerenomore______forfishermen(n.渔民)tocatch.reallydirtyrubbishfishWhatcausedtheproblem?Peoplearethrowing_______intotheriver.Factoriesareputting______intotheriver.Howshouldtheproblembesolved?Weshouldwritetothe____________andaskthemto___________thefactories.Everyoneshouldhelpto__________theriver.litterwastegovernmentclosedowncleanup1cRole-playtheconversation.Mark:Theriverwasdirty.Eventhebottomoftheriverwasfullofrubbish.Tony:Butitusedtobesoclean!Mark:Yes,butpeoplearelitteringinthe

river.Tony:Everyoneinthistownshouldplaya

partincleaningitup!2aListentotheinterview.CirclethekindsofpollutionthatJasonandSusantalkabout.A.landpollutionB.airpollutionC.noisepollutionD.waterpollutionListenagainandcompletethesentences.1.Theairisbadlypollutedbecausethereare__________ontheroadthesedays.2.Factoriesthatburncoalalso_______theairwithalotofblacksmoke.3.Thereisalsotoomuchrubbishandwaste.People________________thingseveryday.4.Peoplearealsolitteringin____________likeparks.Thisisturningbeautifulplacesintouglyones.morecarspollutearethrowingawaypublicplaces2a2bListenagainandcompletethesentences.1.Theairisbadlypollutedbecausethereare___________ontheroadthesedays.2.Factoriesthatburncoalalso________theairwithalotofblacksmoke.morecarspollute3.Thereisalsotoomuchrubbishandwaste.People________________thingseveryday.4.Peoplearealsolitteringin______________likeparks.Thisisturningbeautifulplacesintougly

ones.arethrowingawaypublicplacesturn…into…把……变成……2cUsetheinformationin2aand2btorole-playconversationsbetweenJasonandSusan.A:Theair/river/landhasbecomereallypollutedroundhere.I’mgettingveryworried/nervous.B:Yes,Iusedto...A:Theproblemisthat…there’remorecarsontheroadthesedays.factoriesthatburncoalalsopollutetheairwithalotofblacksmoke.thereisalsotoomuchrubbishandwaste.

peoplearethrowingawaythingseveryday.……

2d

Problems

SolutionsHowtocutdownairpollution?takethebusorsubwayinsteadofdriving.rideabike.Nevertakewoodenchopsticksorplasticfork.remembertothrowrubbishinthebins.keeppublicplacescleanandbeautiful.Ouractionscanmakeadifferenceandleadtoabetterfuture!Readthedialoguein2d,thencompletethemindmapinpairs.Howtocutdownwastepollution?bringabagtogoshopping.2dKeypoints1.try的用法trytodosth.意为“尽力做某事”。Wearetryingtosavetheearth.我们正尽力的挽救地球。和try搭配的词组①trydoingsth.意为“试着做某事”。②tryon意为“试穿”。②tryout意为“尝试,试验”。③tryone’sbesttodosth.意为“竭尽全力做某事”。相当于doone’sbesttodosth.⑤haveatry意为“试一试”。Keypoints2.advantagen.优点；有利条件【注意】Thereareotheradvantagesofbikeriding.骑自行车还有其它的优点。【注释】advantage的反义词是disadvantage,意为“缺点，不利条件”。【搭配】havetheadvantageof…具有……有利条件；toone’sadvantage对某人有利活学活用（1）我具有受过良好教育的有利条件。I

goodeducation.(2)对她有利的：她的声音非常甜美。

,hervoiceisverysweet.havetheadvantageofToheradvantageKeypoints3.costv.花费n.花费；价钱【注意】It’sgoodforhealthanditdoesn’tcostanything!它对健康有好处，并且它没有花费任何东西！Ittookmeanhourtofinishmyhomeworkyesterday.我昨天花了一个小时完成我的家庭作业。Ispendtendollarsbuyingthedictionary.我花十美元买了这本词典。Hepaidfivedollarsforthemeal.他付了五美元的饭钱。【注释】cost的过去式和过去分词均为cost,其主语常是物。Keypoints【辨析】spend,pay与take（1）spend意为“花费”，主语常是“人”。常用于spend…on