Unit2SavingtheEarthTopic2Alltheseproblemsareveryserious.SectionC

掌握環(huán)境問(wèn)題相關(guān)的單詞和短語(yǔ):hole,form,rise,oxygen,ozonelayer,radiation,directly,carbondioxide,blanket,escape,thegreenhouseeffect,refer,duringthisperiod,takeaway,passthrough...等.2.能談?wù)摥h(huán)境污染的危害，提出保護(hù)環(huán)境的建議。3.能閱讀和分析文章，遷移運(yùn)用，以讀促寫，完成保護(hù)環(huán)境相關(guān)的一篇短文。Learningaims:Whatenvironmentalproblemscanweseeinthisvideo?Whatcausedit?Theglobalwarming.（全球變暖）Mainlythegreenhouseeffect.Pre-readingThegreenhouseeffectischangingtheclimateofourearthbecauseoftoomuchcarbondioxide.thegreenhouseeffect

溫室效應(yīng)carbondioxide/'kɑ:b?nda?'ɑ:ksa?d/n.二氧化碳拓展：affectv.

影響Thereisabigholeintheozonelayersothatlotsofradiationpassesthroughtheairanddoesharmtotheearthdirectly.ozonelayer/'?uz?un'le??/

臭氧層radiation/re?d?'e??n/

n.放射，放射物拓展：radiatev.

輻射1.takeaway

2.oxygen

3.hole

4.ozonelayer

5.radiation

6.directly7.carbondioxideNewwords

拿走

n.氧氣

n.洞，坑

臭氧層n.

放射，放射物

adv.直接地

二氧化碳

8.form9.blanket

10.escape

11.rise

12.thegreenhouseeffect

13.referto

v.

（使）出現(xiàn)；（使）形成

n.種類；形式n.

毛毯，毯子v.

滲出；逃跑；逃脫v.上升；起床；升起

溫室效應(yīng)

提到，涉及，有關(guān)While-reading1aReadandunderstand.Lookatthefollowingpicturesandpredictthemainideaofthepassage.fewertreesfactorypollutiontrafficpollutiontheozonelayermorecarbondioxide1bChoosesuitabletitlesforParagraphs2-6.Thenwriteitdowninfrontofeachparagraph.Task1A.TrafficpollutionB.FactorypollutionC.FewertreesD.TheozoneholeE.MorecarbondioxideDCABETask2Readthepassageandchoosethebestanswer.1.Whatdoesourplanetmeanhere?（Para.1）

A.Thesun.

B.Mars

C.Themoon.

D.Theearth.2.Inthepassage,blanketrefersto

____.（Para.6）

A.carbondioxidearoundtheearth

B.theozonelayerinthesky

C.theforestsaroundtheworld

D.pollutionallovertheworld3.TheworditinParagraph5

refersto____.

A.CO2B.O3C.O2D.H2O4.Whatisthebesttitleforthispassage?EnvironmentalProblemsB.PollutionontheEarthC.HopefortheFutureD.TheGreenhouseEffectTip:主旨大意題，需要統(tǒng)觀全文，不能以偏概全。Tip:細(xì)節(jié)理解題，代詞從前面內(nèi)容中尋找答案1.在地球上/究竟，到底_______________________2.在這段時(shí)間_______________________3.拿走_(dá)_______________4.許多種類的__________________5.對(duì)......重要______________________6.穿過(guò)_________________________7.溫室效應(yīng)_______________________8.從......逃走_(dá)_________________9.導(dǎo)致癌癥_______________________________10.涉及.../有關(guān).../提到...__________________ontheearth/onearthduringthisperiodtakeawaymanykindsofbeimportantto/forpassthroughthegreenhouseeffectescapefromcausecancer導(dǎo)致某人做某事：causesb.todosth.refertosb./sth.Theearthis4.6billionyearsold.Wehumanshavelived

ontheearthforonly35000years,butduringthisperiod,wehavechangedourplanetalotinmanyways.Somethingswe’vedone

areverygoodfortheearthwhilesomearebad.Allovertheworld,peoplehavecutdownmillionsoftrees.Whenitrainsorwhenthewindblows,theearth

istakenaway.

Forestshavebecomedeserts,somanykindsofanimalsandplantsaredisappearing.takeaway拿走，帶走begoodtosb.=befriendly/nicetosb.“對(duì)...友好”begoodwithsb.“和...相處的好”Inbigcities,carsandbuses

havepollutedtheair.Nowmanypeopleincitieshavehealthproblems.Factorieshavealsopollutedthelandandthewater.Asaresult,manyriversandlakesarenowdead.Aroundtheearth,there’saspecialkindofoxygencalled“ozone”(O3).Itisimportantto

theearth.Butnowairpollutionisdestroyingitandmakingaverybigholeintheozonelayer.Toomuchharmfulradiationfromthesunpassesthroughtheholeandreachestheearthdirectly.Thisisverydangerousbecausethiskindofradiationcancausecancer.過(guò)去分詞作后置定語(yǔ)die(v.)death(n.)Carbondioxide(CO2)intheairhasincreasedalot.Itmainlycomesfromburningoil,coalandwood.Thishasformedablanketaroundtheearth.Theheatfromthesuncan’tescapesothetemperatureisrising.Thisiscalled“thegreenhouseeffect”.Itcausestheleveloftheoceanstoriseandtheclimateoftheearthtochange.Alltheseproblemsareveryserious,sowemustdosomethingnow.rose(過(guò)去式）risen(過(guò)去分詞）raisevt.（及物動(dòng)詞）“舉起、養(yǎng)、籌集”Post-readingCompletethenotesaccordingto1a.ProblemEffectontheenvironmentfewertreesforestsbecomedeserts,animalsandplantsdisappeartrafficpollution

greenhouseeffect,levelofoceansrising,climatechangecarsandbusespolluteair,healthproblemspollutelandandwater,riversandlakesdeadharmfulradiationreachestheearth,causecancerfactorypollutionozoneholemoreCO21cCombinethekeypointsin1cand2toformashortpassageandpayattentiontotheproperlinkingwords.Asweallknow,waterpollutionisbecomingmoreandmoreserious.Somefactoriespourwastewaterintotherivers.Asaresult,itmakesthewaterdirtyandsmellterrible.Mostoffishinthewaterhavediedandwecan’tswiminthewater.Waterisveryimportanttohumanbeings,soweshoulddoourbesttoprotectandsaveit.Luckily,ourgovernmentistakingmeasurestoprotectthewaterfrompollution.Youcanwriteitlikethis:3Howcanwewriteapassageaboutenvironmentalproblems?ParagraphOneParagraphTwoParagraphThreeWhatisthisproblem?Whatcausesthiskindofproblem?Whataretheeffectsofit?ThemeasuresthatweshouldtakeTipsParagraphTwoWhatcausesthiskindofproblem?Whataretheeffectsofit?socialbehaviorpersonalbehaviortheeffectstotheenvironmenttheeffectstothepeople`shealthParagraphThreeAsstudents,weshoulddo...,weshouldn`tdo....Ourgovernmentshoulddo...ThemeasuresthatweshouldtakeThefollowingwords,phrasesandpatternsyoucanuse.producecreatepourusedisturbbearwastecausesortdestroy......Words:Phrasesdoharmto/beharmfultocutdownbreathein/breatheoutmakesb.adj.godeaf/besicktakemeasurestodosthmakeanefforttodosthtakestepstodealwithleadto......Exercises用所給詞匯的適當(dāng)形式或根據(jù)漢語(yǔ)提示填空。1.Mr.andMrs.Smithvisitedacity_______(call)Puyanglastmonth.2.Thethingsthespeaker__________(refer)toinhisspeechhadsomethingtodowithourstudy.3.Sincelastyear,toomuchwastewaterfromthefactories___________(cause)alotofpollutioninthisarea.4.Drinkingcancausepeople__________(have)cancers.5.Forestshavebecomedeserts,somanyplants