九年级下册英语第13单元Section A-1ppt课件

.,Unit13,Weretryingtosavetheearth.,SectionA1a-2d,.,学习目标,Keywords&phrases:litter，bottom，fisherman，coal，ugly，advantage，cost，wooden，plastic，makeadifferenceKeysentences:1.Theriverwasdirty.Eventhebottomoftheriverwasfullofrubbish.2.Itusedtobesoclean.3.Peoplearethrowinglitterintotheriver.,.,Readandlearn,Wordsandexpressions,.,新课导入,.,Theearthispolluted.,.,airpollution,Thefactoriesthatburncoalpollutetheairwithalotofblacksmoke.,n.煤炭,.,Factoriesputwasteintotheriver.,waterpollution,.,mobilephonepollution,.,litterv.乱扔n.垃圾rubbishwaste垃圾，废弃物,Peopleshouldthrowawaylitterinthebin.,n.垃圾箱,.,noisepollution,Therearemorecarsontheroad.,.,课文展现,.,1a,Herearesomewordsrelatedtodifferentkindsofpollution.Writethemintheboxbelow.Thenaddmorewords.,.,noisepollution_,airpollution_,waterpollution_,loudmusic,planes,mobilephones,factories,cars,smoking,ships,factories,littering,rubbish,buildinghouses,buildinghouses,.,1b,Listenandcompletethesentences.,reallydirty,rubbish,fish,.,litter,waste,government,closedown,cleanup,.,1c,Role-playtheconversation,Theriverwasdirty.Eventhebottomoftheriverwasfullofrubbish.,Butitusedtobesoclean!,.,Yes,butpeoplearethrowinglitterintotheriver.,Everyoneinthistownshouldplayapartincleaningitup!,.,Practice,Makeconversationsusingthepollutionin1a.,Theriverhasalwaysbeenthenicestriverinthistown.,Yes,itusedtobesoclean.,.,Whatcausedtheproblem?,ButIwastherelastweekendandtheriverwasreallydirty.,.,Factoriesarealsoputtingwasteintotheriver.,Peoplearethrowinglitterintotheriver.,Whatshouldwedo?,Yes,everyoneinthistownshouldplayapart.,.,Weshouldwritetothegovernmentandaskthemtoclosedownthefactories.,Whatelsecanwedo?,Everyoneshouldhelptocleanuptheriver.,.,Languagepoints,.,1.Weretryingtosavetheearth!我们正在竭尽全力拯救地球!trytodo=tryonesbesttodo努力去做某事。e.g.Everystudentshouldtrytostudyhardinordertostudyinauniversity.为了进入大学学习，每个学生都应该努力学习。,.,2.Herearesomewordsrelatedtodifferentkindsofpollution.berelatedto与有关e.g.Iamnotrelatedtohiminanyway.我和他无任何关系。,.,3.Everyoneinthistownshouldplayapartincleaningitup!playapartin在方面起作用e.g.Agooddietplaysalargepartinhelpingpeoplelivelonger.健康的饮食在帮助人们长寿方面起着非常大的作用。playapart在中扮演角色e.g.HewasinvitedtoplayapartinthisTVplay.他被邀请参加这个电视剧的演出。,.,4.Eventhebottomoftheriverwasfullofrubbish.Yes,butpeoplearethrowinglitterintotheriver.,litter和rubbish都可指“垃圾”，用作不可数名词。rubbish指“没用的东西(被扔或将要丢弃的无用的东西)”不可回收。,.,litter指“(室内或公共场所)乱扔的废物(纸屑、不要的包装纸、废瓶等)”还可回收。e.g.Throwtherubbishout.把垃圾扔出去。Theroomisfullofrubbish.房间里堆满了垃圾。Pickupyourlitterafterapicnic.野餐后将废弃物收拾好。,.,2a,Listentotheinterview.CirclethekindsofpollutionthatJasonandSusantalkabout.,landpollutionB.airpollutionC.noisepollutionD.waterpollution,.,2b,Listenagainandcompletethesentences.,1.Theairisbadlypollutedbecausethereare_ontheroadthesedays.2.Factoriesthatburncoalalso_theairwithalotofblacksmoke.,morecars,pollute,.,3.Thereisalsotoomuchrubbishandwaste.People_thingseveryday.4.Peoplearealsolitteringin_likeparks.Thisisturningbeautifulplacesintougly(丑陋)ones.,arethrowingaway,publicplaces,.,Role-playconversationsbetweenJasonandSusan.,2c,Theairhasbecomereallypollutedaroundhere.Imgettingveryworried.,Yes,Iusedtobeabletoseestarsinthesky.,Theproblemisthat,.,Whatshouldwedotosavetheearth?,.,Turnoffthelightswhenyouleavearoom.,关掉,.,stopridingincars,.,stopusingpapertowelsornapkins（餐巾，餐巾纸）,.,recyclebooksandpaper,回收利用,.,2d,Read2dandcompletethechart.,takethebus,subwayorrideabikeinsteadofdriving.,bringabagtogoshopping.,usechopsticksorforksathome.,throwrubbishinthebins.,.,Role-playtheconversation,JasonandSusan,whatareyourideasforsolvingtheseproblems?,.,Languagepoints,.,Thisisturningbeautifulplacesintouglyones.turninto把变成,e.g.Theicyrainseemedliketoturnintosnow.渐渐地冻雨又变成雪花的模样。,.,2.Itsgoodforhealthanditdoesntcostanything!costv.花费；使付出指花费金钱，主语通常是物。cost的过去式和过去分词均为cost。,e.g.ThenewshirtcostMrWang200yuan.王先生花了200元买了新衬衫。Howmuchdoesthenewcomputercost?新电脑花了多少钱？,.,take,spend,pay&costtake，spend，pay和cost都可以表示“花费”，但它们的用法各有不同。1)take多表示花费时间，常用于Ittakessb.sometimetodosth.这一句型中，其中it作形式主语。e.g.Itusuallytakesme40minutestocookthedinner.,.,2)spend多表示花费时间和金钱，主语通常是人，常用于sb.spend(s)sometime/moneyonsth.和sb.spend(s)sometime/money(in)doingsth.两种句型。e.g.Davidspent2,000yuanonthenewmachine.Myfatherspendsanhour(in)watchingthenewsonTVeveryday.,.,3)pay多表示花费金钱，主语通常是人，常用于sb.pay(s)somemoneyforsth.句型。e.g.Tommypaid20yuanforhisbreakfastyesterday.4)cost多表示花费金钱，主语通常是物，常用于sth.cost(s)(sb.)somemoney.句型。e.g.ThenewdresscostLinda88yuan.,.,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.,cost,spent,takes,.,4.Youshould_sometimepractisingyourpronunciation.5.Mybrother_6,000yuanforthenewcomputeryesterday.,spend,paid,.,3.Sotogether,ouractionscanmakeadifferenceandleadtoabetterfuture!makeadifference(to)示(对)产生影响或作用e.g.Doyouthinkhiswordswouldmakeanydifferencetothefinaldecision?你认为他的话会对最后的决定产生影响吗？ThenewteacheralwaysencourageslittleTom.Thishasmadeabigdifferencetohim.新来的老师总是鼓励小汤姆，这对他影响很大。,.,用动词的适当形式填空。1.Weretrying_(save)theearth.2.Thereusedto_(be)cleanandbeautiful.3.Therearetoomany_for_tocatch(fish).4.Itsbadforenvironme