人教版九年级英语下册 （We're trying to save the earth!）SectionA 教学课件(第1课时)

We'retryingtosavetheearth!SectionA第1课时

Whatpollutiondoyouknow?Thefactoriesthatburncoalpollutetheairwithalotofblacksmoke.airpollutionWhatpollutiondoyouknow?Factoriesputwasteintotheriver.peoplelittereverywhere.waterpollutionWhatpollutiondoyouknow?Therearetoomanycarsontheroad.Somepeopleplayloudmusicinpublic.noisepollutionWhatpollutiondoyouknow?Peopleusealotofplasticbagsintheirdailylife.soilpollutionthrowrubbishinthebintakemorepublictransportationWhatcanwedo?keepquietinthepublicplaceHerearesomewordsrelatedtodifferentkindsofpollution.Writethemintheboxbelow.Thenaddmorewords.1aloudmusiccarsrubbishplaneslitteringshipsfactoriessmokingbuildinghousesmobilephonesnoisepollution________________________________________________airpollution____________________________________________waterpollution________________________________________________factoriesloudmusicplanesmobilephonesfactoriescarssmokingshipslitteringrubbishbuildinghousesbuildinghousesListenandcompletethesentences.1bWhatwastheproblem?Theriverwas___________.Eventhebottomoftheriverwasfullof________.Therewerenomore_____forfishermentocatch.reallydirtyrubbishfishWhatcausedtheproblem?Peoplearethrowing_______intotheriver.Factoriesareputting_______intotheriver.Howshouldtheproblembesolved?Weshouldwritetothe____________andaskthemto___________thefactories.Everyoneshouldhelpto_________theriver.litterwastegovernmentclosedowncleanupRole-playtheconversation.Thenmakeyourownconversationsaboutthekindsofpollutionin1a.1cButitusedtobesoclean!Theriverwasdirty.Eventhebottomoftheriverwasfullofrubbish.Everyoneinthistownshouldplayapartincleaningitup!Yes,butpeoplearethrowinglitterintotheriver.Butitusedtobesoclean!Theairwasdirty.Thesmokefromfactorieswasblack.RoleplayYes,butpeoplearepollutingtheair.Weshouldwritetothegovernmentandaskthemtoclosedownthefactories.[观察]

Everyoneinthistownshouldplayapartin

cleaningitup!这个城镇的每个人都应该参与清理河流。[探究]

playapartin意为“_________；在……方面起作用”，后接名词、代词或动词-ing形式。我想参加学校活动。Iwantto_____________inschoolactivities.playapart参与某事常用短语playanactivepartin(doing)sth.积极参与（做）某事playanimportantpartin(doing)sth.在某事中发挥重要作用[拓展]playapart在……中扮演角色,与playarole同义。HewasinvitedtoplayapartinthisTVplay.他被邀请参加这个电视剧的演出Linda____________ofSnowWhiteintheplay.琳达在这部话剧中扮演了白雪公主的角色。playedapartListentotheinterview.CirclethekindsofpollutionthatJasonandSusantalkabout.2aA.landpollution

B.airpollutionC.noisepollutionD.waterpollutionListenagainandcompletethesentences.2b1.Theairisbadlypollutedbecausethereare_____

_____ontheroadthese

days.2.Factoriesthatburncoalalso_______theair

with

alotofblacksmoke.3.Thereisalsotoomuchrubbishandwaste.People

_________________thingseveryday.4.Peoplearealsolitteringin____________likeparks.

Thisisturningbeautifulplacesintouglyones.carspollutemorearethrowingawaypublicplacesUsetheinformationin2aand2btorole-playconversationsbetweenJasonandSusan.2cYes,Iusedtobeabletoseestarsinthesky.Theairhasbecomereallypollutedaroundhere.I’mgettingveryworried.Theproblemisthat…Readtheconversationin2dquickly,andanswerthequestion.Whatenvironmentproblemsaretheytalkingabout?wastepollutionairpollutionReadtheconversationandcompletethechart.PollutionWaystosolvetheproblemAirpollutionWastepollutiontakethebus,subwayorrideabikeinsteadofdriving1.bringabagtogoshopping2.nevertakewoodenchopsticksorplasticforksbutusetheonesathomewhilebuyingtakeawayfood3.throwrubbishinthebins.Role-playtheconversation.2dInterviewer:

JasonandSusan,whatareyourideasforsolvingtheseproblems?Jason:Well,tocutdownairpollution,weshouldtakethebusorsubwayinsteadofdriving.Susan:

Yeah,orrideabike.Thereareotheradvantagesofbikeriding.It’sgoodforhealthanditdoesn’tcostanything!Interviewer:

Greatideas!Whataboutwastepollution?Susan:

Mmm,Ithinksimplethingslikebringingabagtogoshoppingcanhelp.Istarteddoingthatayearago.Jason:Me,too.Also,InevertakewoodenchopsticksorplasticforkswhenIbuytakeawayfood.Iusetheonesathome.Susan:Andremembertothrowrubbishinthebinsandkeeppublicplacescleanandbeautifulforeveryone.Interviewer:Sotogether,ouractionscanmakeadifferenceandleadtoabetterfuture!外卖食物[观察]

Well,tocutdownairpollution,weshouldtakethebusorsubwayinsteadofdriving.哦，为了减少空气污染，我们应该乘坐公共汽车或地铁，而不是开车。[探究]

cutdown意为“_______；削减”，此时通常和pollution,cost,amount等词搭配。[拓展]cutdown还有“砍伐；砍倒”之意，此时通常和tree搭配。Theofficershavetoldusnottocutdownthetrees.那些官员告诉我们不要砍伐这些树。减少活学活用1．2018·安顺Ithinkyoungphubbers(低头族)aresupposedto________thetimetheyspend________theirsmartphones.A.cutoff;inB.cutdown;onC.cutup;onD.cutin;inB[观察]

It'sgoodforhealthanditdoesn'tcostanything!它对健康有好处，而且不花费任何东西！[探究]

cost作动词，意为“花费”，此时是及物动词，它的主语通常是__________，cost后可以跟双宾语，即__________________，表示“花费某人多少钱”。[拓展]cost还可以作名词，意为“花费；价钱”，通常作不可数名词。The____ofthecoatwas$21.这件大衣的价钱是21美元。事或物costsb.somemoneycost[辨析]常表示花费时间，常见搭配

Ittakessb.sometimetodosth.spendtakepaycost主语是人，表示花费时间和金钱。常见搭配：sb.spend(s)somemoney/timeonsth.(in)doingsth.主语是人，常用于表示“付费”和介词for搭配。主语多是事或物，常见搭配：sth.cost(s)sb.somemoney.活学活用根据句意用take,spend,pay或cost的适当形式填空。1.Thatnewcar________

themlotsofmoney.2.Mona__________50yuanonthebooksjustnow.3.Itusually_______

meanhourtodomyhomework.4.Youshould__________

sometimepractisingyourpronunciation.5.Mybrother_______

6,000yua