九年级英语unit13-Section-A-2a-2d课件.ppt

SectionA2a2dLanguageGoalTalkaboutpollutionandenvirnmentalprotectionTotalkaboutairpollution,waterpollutionandsoundpollution.Tothinkaboutwaysofprotectingtheenvironment.Tolearnthenewwords:advantage,scientificSectionA1b Tony:Hey,Mark,maybe we could go swimming in the river later this afternoon.Mark:I dont think I want to go,Tony.Tony:Why not?Mark:I was there last weekend and the river was really dirty.Even the bottom of the river was full of rubbish,and there were no more fish for fishermen to catch.Tony:No way!It used to be so clean.In fact,it has always been the nicest river in this town.Mark:Not anymore.I think people are throwing litter into the river.Factories are also putting waste into the river.Tony:Thats terrible!We should write to the government.They should close down the factories.Mark:Good idea!But I think everyone in this town should help to clean up the river,too.Everyone should play a part,not just the government.基础预习基础预习写出下面单词的意思写出下面单词的意思ugly_cost_plastic_coal_advantage_wooden_takeaway_bin_把下面的短语与汉语意思连起来。把下面的短语与汉语意思连起来。makeadifferencecutdownleadtobefullofplayapartin导致导致起作用起作用减少减少参与参与充满充满2a Listentotheinterview.CirclethekindsofpollutionthatJasonandSusantalkabout.A.landpollutionB.airpollutionC.noisepollutionD.waterpollution1.Theairisbadlypollutedbecausethereare_ontheroadthesedays.2.Factoriesthatburncoalalso_theairwithalotofblacksmoke.3.Thereisalsotoomuchrubbishandwaste.People_thingseveryday.4.Peoplearealsolitteringin_likeparks.Thisisturningbeautifulplacesintouglyones.morecarsmorecarspollutepollutearethrowingawayarethrowingawaypublicplacespublicplaces2bListenagainandcompletethesentences.SectionA2a2bInterviewer:Today were talking to Jason and Susan about environmental problems.Jason and Susan,can you tell us about some of the problems youve seen?Jason:I think one problem is that the air is badly polluted.I hardly ever see blue skies anymore.Susan:Yes,and I used to see the stars clearly.Interviewer:What do you think has caused this problem?Susan:Well,there are more cars on the road these days.Jason:And factories that burn coal also pollute the air with a lot of black smoke.Interviewer:What other problems do you see?Susan:I guess theres too much rubbish and waste in the streets.Jason:Yes!Every day people are throwing away things like wooden chopsticks,plastic bowls and plastic bags.Susan:Theyre also littering in public places,for example,during picnics in parks.This is turning beautiful places into ugly ones.Interviewer:Youre right.These are serious problems for our environment.Next,lets talk about the things we can do to help.Jason:Theairhasbecomereallypollutedaroundhere.Imgettingveryworried.Susan:Yes,Iusedtobeabletoseestarsinthesky.Jason:Theproblemisthat.Usetheinformationin2aand2btorole-playconversationsbetweenJasonandSusan.2c2dRead 2d and complete the chart.ProblemsSolvingproblemsairpollutionwastepollutionwoodenchopsticksorplasticforksrubbishtakethebus,subwayorrideabikeinsteadofdrivingbringabagtogoshoppingusechopsticksorforksathomethrowrubbishinthebinsSectionA2dInterviewer:Jason and Susan,what are your ideas for solving these problems?Jason:Well,to cut down air pollution,we should take the bus or subway instead of driving.Susan:Yeah,or ride a bike.There are other advantages of bike riding.Its good for health and it doesnt cost anything!Interviewer:Great ideas!What about waste pollution?本句中本句中Tocutdownairpollution是动词不定式作目的状是动词不定式作目的状语。语。cutdown,意为意为减少减少；是是“动词动词+副词副词”结构的结构的短语，后面所带的宾语为名词时，宾语可以位于短语，后面所带的宾语为名词时，宾语可以位于down的前面或后面；为代词时只能位于的前面或后面；为代词时只能位于down前面。前面。Youdbettercutthearticledowntoabout2000words.cut后接后接off,into,up,in的不同：的不同：cutoff切断；切除切断；切除cutinto把把.切成切成cutup切碎切碎cutin插队插队Itsgoodforhealthanditdoesntcostanything!costv.花费；使付出花费；使付出指花费金钱，主语通常是物。指花费金钱，主语通常是物。cost的过的过去式和过去分词均为去式和过去分词均为cost。e.g.ThenewshirtcostMr.Wang200yuan.王先生花了王先生花了200元买了新衬衫。元买了新衬衫。Howmuchdoesthenewcomputercost?新电脑花了多少钱？新电脑花了多少钱？take,spend,pay&costtake，spend，pay和和cost都可以表示都可以表示“花花费费”，但它们的用法各有不同。，但它们的用法各有不同。1)take多表示花费时间多表示花费时间，常用于，常用于Ittakessb.sometimetodosth.这一句型中，其这一句型中，其中中it作形式主语作形式主语。e.g.Itusuallytakesme40minutestocookthedinner.2)spend多表示花费时间和金钱，主语通多表示花费时间和金钱，主语通常是人常是人，常用于，常用于sb.spend(s)sometime/moneyonsth.和和sb.spend(s)sometime/money(in)doingsth.两种句型。两种句型。e.g.Davidspent2,000yuan onthenewmachine.Myfatherspendsanhour(in)watchingthenewsonTVeveryday.3)pay多表示花费金钱，主语通常是人多表示花费金钱，主语通常是人，常用于常用于sb.pay(s)somemoneyforsth.句句型。型。e.g.Tommypaid20yuanforhisbreakfastyesterday.4)cost多表示花费金钱，主语通常是物多表示花费金钱，主语通常是物，常用于常用于sth.cost(s)(sb.)somemoney.句句型。型。e.g.ThenewdresscostLinda88yuan.根据句意用根据句意用take,spend,pay或或cost的适当的适当形式填空。形式填空。1.Thatnewcar_themlotsofmoney.2.Mona_50yuanonthebooksjustnow.3.Itusually_meanhourtodomyhomework.costspenttakes4.Youshould_sometimepractisingyourpronunciation.5.Mybrother_6,000yuanforthenewcomputeryesterday.spendpaid Susan:Mmm,I think simple things like bringing a bag to go shopping can help.I started doing that a year ago.Jason:Me,too.Also,I never take wooden chopsticks or plastic forks when I buy takeaway food.I use the ones at home.Susan:And remember to throw rubbish in the bins and keep public places clean and beautiful for everyone.Interviewer:So together,our actions can make a difference and lead to a better future!makeadifference(to)表示表示(对对)产生影响或作用产生影响或作用e.g.Doyouthinkhiswordswouldmakeanydifferencetothefinaldecision?你认为他的话会对最后的决定产生影响吗？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，这对他影响新来的老师总是鼓励小汤姆，这对他影响很大。很大。.用方框中所给词的适当形式填空。用方框中所给词的适当形式填空。1.Dontthrow_(垃圾垃圾)everywhere.2.Inwinter,manypeopleburn_(煤煤)tokeepwarm.3.Thepolicefoundabodyatthe_(底部底部)ofthelake.4.The_(花费花费)oflivinginbigcitiesisveryhigh.5.Hekeepsarabbitinabig_(木制的木制的)box.costwooden,coal,bottom,littercostwoodencoalbottomlitter1.He_gooutwithhisparents,butnowhe_stayingathomealone.A.useto;isusedtoB.isusedto;usedtoC.useto;usedtoD.isusedto;isusedto2.Theinterestingbook_me10yuan.A.tookB.paidC.spendD.cost.Choosethebestanswer.AD3.Wemustdosomethingusefulto_pollution.A.cutoffB.cutupC.cutdownD.cutin4.Smokingcan_lungcancer.youdbettergiveitup.AworkonBleadtoCtakeawayDputoutCB5.Whatarethe_ofbikeriding?-Itcanhelpcutdownairpollution.AadvantageBreasonsCresultsDideasA6.Doyoutakeexerciseeveryday?Yes,Ialways_thirtyminutesaftersupper.AspendBcostCtakeDpay7.I_300yuanforthebike.AtookBspendCcostDpaidAD.完成句子：完成句子：1.多一个人少一个人无所谓。多一个人少一个人无所谓。Onepersonwouldnt_.2.这个木箱时装满了书。这个木箱时装满了书。The_box_books.3.不健康的饮食对这种疾病的传播起一定的作用。不健康的饮食对这种疾病的传播起一定的作用。Unhealthyfoods_thespreadofthedisease.4.这条小路通向公园。这条小路通向公园。Thepath_thepark.5.我错拿了你的包。我错拿了你的包。Itookyourbag_minebymistake.woodenisfullofmakeadifferenceleadstoplayapartofinsteadof