Unit+2+Topic+2+Section+C 仁愛版九年級英語上冊

Unit2SavingtheEarthTopic2SectionC 學(xué)習(xí)導(dǎo)航新知學(xué)習(xí)課堂小結(jié)當(dāng)堂檢測學(xué)習(xí)目標(biāo)重點(diǎn)研討新知學(xué)習(xí)課堂小結(jié)當(dāng)堂檢測學(xué)習(xí)目標(biāo)重點(diǎn)研討學(xué)習(xí)目標(biāo)1.能熟悉并正確運(yùn)用本課時的重點(diǎn)單詞和短語2.能進(jìn)一步學(xué)習(xí)各種污染對地球造成的危害和造成這些污染的原因3.能根據(jù)不同的閱讀目的，運(yùn)用簡單的閱讀策略獲取信息新知學(xué)習(xí)課堂小結(jié)當(dāng)堂檢測學(xué)習(xí)目標(biāo)重點(diǎn)研討NewwordsOzoneisaspecialkindofoxygen.Itcanprotecttheearth.ozonelayer

[?o?zo?nler][?ɑ?ks?d??n]臭氧氧氣臭氧層新知學(xué)習(xí)課堂小結(jié)當(dāng)堂檢測學(xué)習(xí)目標(biāo)重點(diǎn)研討Peopleproducelotsofharmfulchemicalsintotheair.Theycauseabigholeintheozonelayer.Sotheradiationcanpassthroughtheholeandreachtheearthdirectly.

[?re?di?e??n]穿過[d??rektli]Newwords放射物直接地新知學(xué)習(xí)課堂小結(jié)當(dāng)堂檢測學(xué)習(xí)目標(biāo)重點(diǎn)研討Newwordscarbondioxide/?kɑ:b?nda???ksa?d/

oxygen/'?k

s?

d??n/CO2二氧化碳O2氧氣Treescanbreathein__________________andbreatheout_________________.carbondioxide(CO2)oxygen(O2)吸入呼出新知學(xué)習(xí)課堂小結(jié)當(dāng)堂檢測學(xué)習(xí)目標(biāo)重點(diǎn)研討形成

/?bl??k?t/毯子/??ske?p/

逃離、滲出Ithasformedablanketandtheheatfromthesuncan’tescape.Thetemperatureisrising.rise/?ra?z/上升ButCarbondioxidehasincreasedalot.(增加)(熱氣)Newwords新知學(xué)習(xí)課堂小結(jié)當(dāng)堂檢測學(xué)習(xí)目標(biāo)重點(diǎn)研討1aReadandunderstand.Lookatthefollowingpicturesandpredictthemainideaofthepassage.fewertreesfactorypollutiontrafficpollutiontheozoneholemorecarbondioxide新知學(xué)習(xí)課堂小結(jié)當(dāng)堂檢測學(xué)習(xí)目標(biāo)重點(diǎn)研討Theearthis4.6billionyearsold.Wehumanshavelivedontheearthforonly35000years,butduringthisperiod,wehavechangedourplanetalotinmanyways.Somethingswehavedoneareverygoodfortheearthwhileothersarebad.___________Allovertheworld,peoplehavecutdownmillionsoftrees.Whenitrainsorwhenthewindblows,theearthistakenaway.Forestshave

becomedeserts,somany

kindsofanimalsandplantsaredisappearing.FewerTrees新知學(xué)習(xí)課堂小結(jié)當(dāng)堂檢測學(xué)習(xí)目標(biāo)重點(diǎn)研討

______________Inbigcities,carsandbuseshavepollutedtheair.Nowmanypeopleincitieshavehealthproblems._______________Factorieshavealsopollutedthelandandthewater.Asaresult,manyriversandlakesarenowdead.______________Aroundtheearth,there'saspecialkindofoxygencalled“ozone”(O3).Itisimportanttotheearth.Butnowairpollutionisdestroyingitandmakingaverybigholeintheozonelayer.Toomuchharmfulradiationfromthesunpassesthroughtheholeandreachestheearthdirectly.Thisisverydangerousbecausethiskindofradiationcancausecancer.TrafficPollutionFactoryPollutionTheOzoneLayer新知學(xué)習(xí)課堂小結(jié)當(dāng)堂檢測學(xué)習(xí)目標(biāo)重點(diǎn)研討_________________Carbondioxide(CO2)intheairhasincreasedalot.Itmainlycomesfromburningoil,coalandwood.Thishasformedablanketaroundtheearth.Theheatfromthesuncan'tescapesothetemperatureisrising.Thisiscalled“thegreenhouseeffect”.Itcausestheleveloftheoceanstoriseandtheclimateoftheearthtochange.Alltheseproblemsareveryserious,sowemustdosomethingnow.MoreCarbonDioxide新知學(xué)習(xí)課堂小結(jié)當(dāng)堂檢測學(xué)習(xí)目標(biāo)重點(diǎn)研討1bRead1aandcompletethefollowingtasks.1.ChoosesuitabletitlesforParagraphs2-6.Thenwriteitdowninfrontofeachparagraph.A.TrafficpollutionB.FactorypollutionC.FewertreesD.TheozoneholeE.Morecarbondioxide2.Whatdoesourplanetmeanhere?

A.Thesun.

B.Mars.

C.Themoon.

D.Theearth.※34256新知學(xué)習(xí)課堂小結(jié)當(dāng)堂檢測學(xué)習(xí)目標(biāo)重點(diǎn)研討3.Inthepassage,blanketrefersto

____.

A.carbondioxidearoundtheearth

B.theozonelayerinthesky

C.theforestsaroundtheworld

D.pollutionallovertheworld4.TheworditinParagraph5refersto____.

A.CO2

B.O3

C.O2

D.H2O5.Whatisthebesttitleforthispassage?A.EnvironmentProblemsB.PollutionontheEarthC.HopefortheFutureD.TheGreenhouseEffect※※※新知學(xué)習(xí)課堂小結(jié)當(dāng)堂檢測學(xué)習(xí)目標(biāo)重點(diǎn)研討1cCompletethenotesaccordingto1a.ProblemEffectontheenvironmentfewertreesforestsbecomedeserts,animalsandplantsdisappeartrafficpollution

greenhouseeffect,levelofoceansrising,climatechange……carsandbusespolluteair,healthproblemspollutelandandwater,riversandlakesdeadharmfulradiationreachestheearth,causecancerfactorypollution

ozonehole

moreCO2新知學(xué)習(xí)課堂小結(jié)當(dāng)堂檢測學(xué)習(xí)目標(biāo)重點(diǎn)研討2SurftheInternettocollectmoreinformationaboutenvironmentalproblemsandeffects.Thendiscusstheinformationingroupsandtakenotes.新知學(xué)習(xí)課堂小結(jié)當(dāng)堂檢測學(xué)習(xí)目標(biāo)重點(diǎn)研討3Combinethekeypointsin1cand2toformashortpassageandpayattentiontotheproperlinkingwords.Asweallknow,waterpollutionisbecomingmoreandmoreserious.Somefactoriespourwastewaterintotherivers.Asaresult,itmakesthewaterdirtyandsmellterrible.Mostoffishinthewaterhavediedandwecan’tswiminthewater.Waterisveryimportanttohumanbeings,soweshoulddoourbesttoprotectandsaveit.Luckily,ourgovernmentistakingmeasurestoprotectthewaterfrompollution.Youcanwriteitlikethis:新知學(xué)習(xí)課堂小結(jié)當(dāng)堂檢測學(xué)習(xí)目標(biāo)重點(diǎn)研討Keypoints1.Somethingswehavedoneareverygoodfortheearthwhileothersarebad.我們所做的一些事情對地球有益，然而其他一些對地球卻有負(fù)面影響。※

Wehavedone…前省略了that,作定語從句，修飾前面的somethings.※begoodfor對……有益；begoodat=dowellin

擅長……;eg:Doingmorningexercisesisgoodforourhealth.做早操對我們的健康有益。Heisgoodatswimming.他擅長游泳。新知學(xué)習(xí)課堂小結(jié)當(dāng)堂檢測學(xué)習(xí)目標(biāo)重點(diǎn)研討※①

while

conj.而，然而，相當(dāng)于but.表示對比；eg:Heisaworker,whileIamateacher.他是工人而我是教師。

②whileconj.

引導(dǎo)時間狀語；eg:Whileshewaslisteningtotheradio,shefellasleep.她聽著收音機(jī)睡著了。③whileconj.

引導(dǎo)讓步狀語從句，意思是“雖然……但是……”、“盡管……但是……”(多放于句首)；eg:Whileheloveshisstudents,heisverystrictwiththem.雖然他愛他的學(xué)生，可是他對他們很嚴(yán)格。④whileconj.

引導(dǎo)條件狀語，意思是“只要”；eg:Whilethereislifethereishope.只要生命存在，就有希望。⑤while作名詞用，表示“一會兒”“一段時間”；eg:Shelikestoliedownforawhileafterlunch.她喜歡午飯后躺一會兒。新知學(xué)習(xí)課堂小結(jié)當(dāng)堂檢測學(xué)習(xí)目標(biāo)重點(diǎn)研討2.Theearthistakenaway.泥土被帶走。

takeaway拿走、帶走Eg:難道你要拿走他們的鉛筆嗎？Areyougoingtto

theirpencils?takeaway新知學(xué)習(xí)課堂小結(jié)當(dāng)堂檢測學(xué)習(xí)目標(biāo)重點(diǎn)研討3.Asaresult,manyriversandlakesarenowdead.結(jié)果，許多河流和湖泊都死了?！鵤saresult

因此，結(jié)果Eg:因此，他們會非常具有說服力。

,theycanbeverypersuasive.Asaresult※bedead死氣沉沉新知學(xué)習(xí)課堂小結(jié)當(dāng)堂檢測學(xué)習(xí)目標(biāo)重點(diǎn)研討passthroughthehole穿過洞

passthroughEg:空氣可以通過潮濕的布料。Airwill

thewetcloth.passthrough4.Toomuchharmfulradiationfromthesunpassesthroughtheholeandreachestheearthdirectly.

來自太陽的太多有害輻射穿過該孔并直接到達(dá)地球。穿過新知學(xué)習(xí)課堂小結(jié)當(dāng)堂檢測學(xué)習(xí)目標(biāo)重點(diǎn)研討5.Itcausestheleveloftheoceanstoriseandtheclimateoftheearthtochange.它導(dǎo)致了海平面的上升以及