【课件】九年级上册Unit 2 Topic 2 Section C

Unit2SavingtheEarth

Topic2Alltheseproblemsareveryserious.

SectionC(1)________ofusknowshowtostopthebadbehavior.(2)Iknockedonthedoorbut___________answered.(3)Someofthesebooksarebetterthan__________.(4)Shewasdrivingthecarwithonehandandwipingthewindowwiththe_______.(5)TheyarebeautifulbutIamlookingfor___________useful.(6)Isthere___________youcandotohelpher?(7)There’re5000peoplelivinghereandalmost_________hashis/herowncar.(8)He’sclevererthan____________Iknow.(9)I’velooked__________butIcan’tfindit.Fillintheblanksusing

something,anything,others,nobody,everyone,anybody,everywhere,none,other.ReviewNonenobodyothersothersomethinganythingeveryoneanybodyeverywhereTrytoreadthenewword:[`nəʊweə(r)][ˈɒksɪdʒ(ə)n][həʊl][`əʊzəʊn`leiə(r)][`ka:(r)bəndai`a:ksaid][reɪdɪˈeɪʃ(ə)n][dɪ'rektli][fɔː(r)m][ˈblæŋkɪt][ɪ'skeɪp][raɪz][rɪˈfɜːtu][ʃɔː(r)tidʒ][əˈvɒɪd][ri:`sɔːs][dɪs'kʌvə][riːˈjuːz]['θɜːsti][niəli][lɔː]

短语：拿走

温室效应

无处

氧气

洞，坑

臭氧层nowhereoxygenholeozonelayer

二氧化碳

放射，放射物

直接地

（使）形成

carbondioxideradiationdirectlyform

毯子

逃跑

上升，起床

涉及到

不足，缺少

blanketescaperiserefertoshortage防止，避免

资源，财力

发现

再次使用

缺水的，口渴的avoidresourcediscoverreusethirsty几乎

法律nearlylaw

takeawaythegreenhouseeffect11.拿走

2

[ˈɒksɪdʒ(ə)n]3.

ozonelayer4.[həʊl]

5.[dəɪ'rektli]6.[reɪdɪˈeɪʃ(ə)n]7.

carbondioxide8.

[ˈblæŋkɪt]9.

[fɔː(r)m]10.[raɪz]11.[ɪ‘skeɪp]12.温室效应13.提到，涉及，有关

takeaway

hole洞臭氧层

oxygen氧气二氧化碳radiation放射

directly直接地

blanket毛毯

form出现，形成，种类

rise上升，起床，升起

escape逃跑

thegreenhouseeffectrefertoInourdailylife,weshouldfacemoreenvironmentalproblems.Canyousaysomethingaboutthem?

cities,pollute,healthproblems

factories,thelandandtheair,deadInourdailylife,weshouldfacemoreenvironmentalproblems.

Canyousaysomethingaboutthem?

cutdown,millionsof,

takeawaytheearth,becomedesert拿走Inourdailylife,weshouldfacemoreenvironmentalproblems.Canyousaysomethingaboutthem?

oxygen

aspecialkindofoxygencalled“ozone”(O3)氧气

averybigholeintheozonelayer,toomuchharmfulradiationfromthesun臭氧层放射，放射物n.洞，坑v.出现，形成n.种类，形式Inourdailylife,weshouldfacemoreenvironmentalproblems.Canyousaysomethingaboutthem?CO2

carbondioxideincreasealot,forma“blanket”,theheatfromthesuncan’tescape二氧化碳毛毯，毯子渗出；逃跑；逃脱

causetheleveloftheseatorisecalled“thegreenhouseeffect”or“globalwarming”v.上升；起床；升起温室效应fewertreesfactorypollutiontrafficpollutiontheozonelayermorecarbondioxide1aReadandunderstand.Lookatthefollowingphrases,thentrytomatchthemwiththepictures:

5.fewertrees2.factorypollution1.trafficpollution4.theozonelayer3.morecarbondioxide1aReadandunderstand.Readthefollowingphrases,thentrytomatchthemwiththepictures:

Theearthis4.6billionyearsold.Wehumanshavelivedontheearthforonly35000years,butduringthisperiod,wehavechangedourplanetalotinmanyways.Somethingswe’vedoneareverygoodfortheearthwhilesomearebad._____________Allovertheworld,peoplehavecutdownmillionsoftrees.Whenitrainsorwhenthewindblows,theearthistakenaway.Forestshave

becomedeserts,somany

kindsofanimalsandplantsaredisappearing._________________Inbigcities,carsandbuseshavepollutedtheair.Nowmanypeopleincitieshavehealthproblems.________________Factorieshavealsopollutedthelandandthewater.Asaresult,manyriversandlakesarenowdead.______________Aroundtheearth,there’saspecialkindofoxygencalled“ozone”(O3).Itisimportanttotheearth.Butnowairpollutionisdestroyingitandmakingaverybigholeintheozonelayer.Toomuchharmfulradiationfromthesunpassesthroughtheholeandreachestheearthdirectly.Thisisverydangerousbecausethiskindofradiationcancausecancer._________________Conbondioxide(CO2)intheairhasincreasedalot.Itmainlycomesfromburningoil,coalandwood.Thishasformedablanketaroundtheearth.Theheatfromthesuncan’tescapesothetemperatureisrising.Thisiscalled“thegreenhouseeffect”.Itcausestheleveloftheoceanstoriseandtheclimateoftheearthtochange.Alltheseproblemsareveryserious,sowemustdosomethingnow.FactoryPollution

TheOzoneLayerMoreCarbonDioxideChoosesuitabletitlesforParagraphs2-6.Thenwriteitdowninfrontofeachparagraph.Theearthis4.6billionyearsold.Wehumanshavelivedontheearthforonly35000years,butduringthisperiod,wehavechangedourplanetalotinmanyways.Somethingswe’vedoneareverygoodfortheearthwhilesomearebad._________Allovertheworld,peoplehavecutdownmillionsoftrees.Whenitrainsorwhenthewindblows,theearthistakenaway.Forestshave

becomedeserts,somany

kindsofanimalsandplantsaredisappearing.FewerTreesA.TrafficpollutionB.FactorypollutionC.FewertreesD.TheozoneholeE.MorecarbondioxideTask1

____________Inbigcities,carsandbuseshavepollutedtheair.Nowmanypeopleincitieshavehealthproblems._____________Factorieshavealsopollutedthelandandthewater.Asaresult,manyriversandlakesarenowdead._____________Aroundtheearth,there’saspecialkindofoxygencalled“ozone”(O3).Itisimportanttotheearth.Butnowairpollutionisdestroyingitandmakingaverybigholeintheozonelayer.Toomuchharmfulradiationfromthesunpassesthroughtheholeandreachestheearthdirectly.Thisisverydangerousbecausethiskindofradiationcancausecancer.

TrafficPollutionFactoryPollution

TheOzoneLayer直接地

________________Carbondioxide(CO2)intheairhasincreasedalot.Itmainlycomesfromburningoil,coalandwood.Thishasformedablanketaroundtheearth.Theheatfromthesuncan’tescapesothetemperatureisrising.Thisiscalled“thegreenhouseeffect”.Itcausestheleveloftheoceanstoriseandtheclimateoftheearthtochange.Alltheseproblemsareveryserious,sowemustdosomethingnow.MoreCarbonDioxide1bRead1aagainandcompletethefollowingtasks.2.Whatdoesourplanetmeanhere?

A.Thesun.

B.Mars.

C.Themoon.

D.Theearth.3.Inthepassage,blanketrefersto

____.

A.carbondioxidearoundtheearth

B.theozonelayerinthesky

C.theforestsaroundtheworld

D.pollutionallovertheworld4.TheworditinParagraph5refersto____.

A.CO2B.O3C.O2D.H2O5.Whatisthebesttitleforthispassage?EnvironmentProblemsB.PollutionontheEarthC.HopefortheFutureD.TheGreenhouseEffect

Task2while然而betakenaway被冲走，

被带走“这是个被动语态的句子，其结构be动词+动词的过去分词

passthrough从....内部穿过Takenotes:

Theearthis4.6billionyearsold.Wehumanshavelivedontheearthforonly35000years,butduringthisperiod,wehavechangedourplanetalotinmanyways.Somethingswe’vedoneareverygoodfortheearthwhilesomearebad._____________Allovertheworld,peoplehavecutdownmillionsoftrees.Whenitrainsorwhenthewindblows,theearthistakenaway.Forestshave

becomedeserts,somany

kindsofanimalsandplantsaredisappearing._________________Inbigcities,carsandbuseshavepollutedtheair.Nowmanypeopleincitieshavehealthproblems.________________Factorieshavealsopollutedthelandandthewater.Asaresult,manyriversandlakesarenowdead.______________Aroundtheearth,there’saspecialkindofoxygencalled“ozone”(O3).Itisimportanttotheearth.Butnowairpollutionisdestroyingitandmakingaverybigholeintheozonelayer.Toomuchharmfulradiationfromthesunpassesthroughtheholeandreachestheearthdirectly.Thisisverydangerousbecausethiskindofradiationcancausecancer._________________Conbondioxide(CO2)intheairhasincreasedalot.Itmainlycomesfromburningoil,coalandwood.Thishasformedablanketaroundtheearth.Theheatfromthesuncan’tescapesothetemperatureisrising.Thisiscalled“thegreenhouseeffect”.Itcausestheleveloftheoceanstoriseandtheclimateoftheearthtochange.Alltheseproblemsareveryserious,sowemustdosomethingnow.FewerTrees

TrafficPollutionFactoryPollution

TheOzoneLayerMoreCarbonDioxideTranslatethepassageingroups:ProblemEffectontheenvironmentfewertreesforestsbecomedeserts,animalsandplantsdisappeartrafficpollution

greenhouseeffect,levelofoceansrising,climatechangecarsandbusespolluteair,healthproblemspollutelandandwater,riversandlakesdeadharmfulradiationreachestheearth,causecancerfactorypollution

ozonehole

moreCO21cCompletethenotesaccordingto1a.3.Combinethekeypointsin1