九年級下冊 英語 第三單元《Lesson 2 Reading》課件

九年級下冊-上海教育出版社-英語-第三單元Unit3TheenvironmentLesson2Reading學習目標通過文本閱讀，理解核心詞匯的含義及用法。通過因果關系的分析，學習文本體裁,理解話題內容；培養(yǎng)保護環(huán)境、綠色生活的意識。通過微技能訓練，提高獲取信息、處理信息的能力和答題的準確性。

pollutionsea-levelrisinganimalsdyingclimatechangingglobalwarmingTopictalking:TheworldisindangerWhatdoyouknowaboutthegreenhouseeffect?atmosphere大氣層n.temperature氣溫n.carbondioxide二氧化碳

n.increase升高v.efbdca

MatchingP34A12.Whatproblemsdoesthearticlediscuss?1.Whatisthearticlemainlyabout?Environmentalproblems.ThegreenhouseeffectCuttingdownforestsBadhabitsTitleIntroductionSub-headingsPre-reading:PredictionPre-readingThearticleisprobablyfroma(n)______.

A.advertisement（廣告）

B.posterabouttheEarthHour

C.environmentalsciencebook

D.comic（連環(huán)畫）book

A.Anarration

(記敘文)

B.Adescription（描述文）

C.Anargumentation（議論文）

D.Anexposition（說明文）Pre-readingWhatisthegenre(體裁)

ofthisarticle?narrationdescriptionargumentationexposition記敘文是記人敘事的文章，例如故事類、人物傳記類的文章，通常包含時間、地點、人物、事件的起因、過程和結果等要素。

（5Ws+1H）描述文以描繪人物、事物、景物為主，刻畫和描摹人物的外貌、動作；事物的性質、形態(tài)；景物的狀貌、變化。議論文是一種剖析事物、論述事理、發(fā)表意見、提出主張的文體。說明文是用簡明的語言，客觀、準確、科學地解說事物或闡述事理的一種文章體裁。(What/Why/How)

A.Anarration

（記敘文）

B.Adescription（描述文）

C.Anargumentation（議論文）

D.Anexposition（說明文）Pre-readingWhatisthegenre(體裁)ofthisarticle?Itisatypeofinformationaltextthattellssomethingaboutatopicoranideatoreaders.Thepurposeistoinform,explain,describeordefinethesubjecttoreaders.Wewillfindsomefacts,examples,supportingdetailsandsometimestheauthor’sownopinioninthetext.ReadingforstructureIntroductionProblem1Problem2SolutionProblem3ReadingforstructureOurworldisindanger.ThegreenhouseeffectWemusttakeproperaction.CuttingdownforestsBadhabitsIntroductionMainproblemsSolution

ReadingfordetailsThegreenhouseeffectWhatistheatmosphere

aroundtheworldlike?2.Whatmaythegreenhouseeffectcause?

Whatistheatmospherearoundtheworld

like?ReadingfordetailsTheatmospherearoundtheEarthisnecessaryforalllivingthings.Itisliketheglassofagreenhouse,lettingsunlightinandkeepingheatfromgettingout.Withoutit,theEarthwouldbethesameastheMoon—coldandlifeless.=nolifeThegreenhouseeffectWhenweburnfuelssuchaspetrolandcoal,weproduceagascalledcarbondioxide(CO2).Toomuchofthisgaspollutestheatmosphere,andcausesittokeepintoomuchheat.Asaresultofthegreenhouseeffect,theEarth’stemperatureisincreasing.Thiscausessealeveltorise,andinthefuturemaycausecitiestodisappear.CompletethefollowingchartCauses原因ThegreenhouseeffectA.氣體B.垃圾C.木頭D.燃料

burnfuelsproduceCO2temperature:increasesealevel:risecities:disappearEffects結果CuttingdownforestsCuttingdownforestsCuttingdownforests_______the______oftheanimalsand______________soilerosion(水土流失)，________andevenmore__________toourworld.destroyshomesresultsinfloodsdamageEveryyear,wedestroy

naturebycuttingdownhugeareasofforests.ThismakesthegreenhouseeffectworsebecausetreestakeinCO2andproduceoxygen.Cuttingdowntreesalsodestroysthehomesoftheanimalsthatliveinourforests,andcausesthesurfaceofthesoiltobeeasilydestroyedbyrain.Thiscanresultinfloodsandevenmoredamagetotheenvironment.BadhabitsBadhabitsCreatemountainsofrubbishThrowthemawayUsethingsonceManyofourhabitscausepollution.Peopleoftenusethingsonceandthenthrowthemaway,orleavethemonthegroundaslitter.Thiscreatesmountainsofrubbishandpollutesourlandandseas.PolluteourlandandseasSolutionMakealist1.Becomegreenconsumers.2.Recyclethings.3.Reusethingsforthesame

purposeasbefore.4.Usethingsfornewpurposes.Solution:takeactionInordertoprotecttheenvironment,weneedtotakeproperaction.Weshouldbedifferentfrommanyconsumersandbecome“greenconsumers”.Thismeansthatweshouldonlybuyanduseproductsfriendlytotheenvironment.Weshouldalsorecycleasmanythingsaswecan.Wecanreusethingsforthesamepurposeasbefore,orwecanusethemfornewpurposes.Ifwejustlearntoliveinnewanddifferentways,wecanmakeadifference.

Readingsub-skills理解所讀材料的主旨大意；理解所讀材料的具體信息；根據上下文和構詞法推斷、理解生詞的含義；對所讀內容做出簡單的判斷和推理；理解文段中各句子之間的邏輯關系；理解作者的意圖、觀點和態(tài)度；理解故事的情節(jié)，預測故事情節(jié)的發(fā)展和可能的結局。Whatdoestheunderlinedword“This”inL21referto?A.Thecarbondioxide.

B.Theatmosphere.

C.Thegreenhouseeffect.

D.Theincreasingtemperature.Tip:聯系上文，弄清指代關系MoreexercisesareonP37D1

Comprehensions實戰(zhàn)演練2.Thepurposeofthearticleistomake_________.A.peopledomoretoprotecttheenvironment

B.morepeoplebecomeconsumers

C.peoplelearnmoreabouttheatmosphere

D.peoplechangetheirbadhabits

考查作者意圖Tip:理解主旨大意，切忌以偏概全。

考查推斷能力Tip:尋找相關依據，做出正確推斷。3.Iftherearemoretrees,theamountofCO2willbe____.

A.moreB.lessC.thesameD.noneEveryyear,wedestroynaturebycuttingdownhugeareasofforests.ThismakesthegreenhouseeffectworsebecausetreestakeinCO2andproduceoxygen.Line25-30Post-reading:CausesandeffectsAsar______ofthegreenhouseeffect,theEarth’stemperatureisi___________,sealevelisrisingandcitiesmaydisappear.Cuttingdownforestsd_______thehomesoftheanimalsandresultsinsoilerosion,f______andevenmoredamagetoourworld.Ourbadhabitscreatemountainsofrubbishandpolluteourlandandseas.Therefore,weshouldtakep______action.FillintheblanksresultincreasingdestroysfloodsproperPost-reading:DeepthinkingWhatwillhappenifwedon’tmakeadifference?Let’slivealow-carbonlife!Travelbypublictransportation.Turnofflightsorelectricapplianceswhennotusing.Takeashortershowerinsteadofabath.Dowastesorting.Getridofbadhabits.Reduce,reuseandrecycle.…分體裁說明文總總Summary中心突出科學性條理性小標題段落主題句各段主題均從不同角度解釋篇章主旨猜詞微技能作者意圖推斷分析原因結果指代Summary廣州市越秀區(qū)教育局Findoutmoreenvironmentalproblemsthatwefaceandmakealistofwhatweshoulddotoprotectourworld.FinishtheexercisesonP36-37.HomeworkThankyou!九年級下冊-上海教育出版社-英語-第三單元Reading(答疑)Unit3TheenvironmentCauseandeffectCause:Thereasonwhysomethinghappens

事情發(fā)生的原因Effect:Whathappensbecauseofthecause

由于原因而發(fā)生的事情Transitionalwordsandphrases

effectTherefore,sohencethusconsequently…resultin……

causesinceasbecausebecauseofasaresultof…Fillintheblankswithpropertransitionalwordsorphrases.____________ourworldisindanger,wemustprotectit.____________thegreenhouseeffect,theearthisgettingwarmerandwarmer.Cuttingdowntreescan___________soilerosionandfloods.Peoplepollutetheairandcutdownforests._________,thegreenhouseeffectbecomesworse.Since/As/BecauseBecauseof/Asaresultofresultin/leadto/causeTherefore/Asaresult/ForthisreasonPatternsofcause-effectrelationshipcause2cause1cause3effecteffect2effect1effect3causeManycauses--singleeffectpatternSinglecause--manyeffectspatternSinglecause--singleeffectpatterncauseeffectCasualchainpatterncauseeffect(cause)effect(cause)effect(cause)effect(cause)effectThegreenhouseeffect

Causes*burnfuels*pollutetheatmosphere*greenhouseeffect*sealevelrisesandcitiesmayevendisappear.

Effects*producecarbondioxide*keepintoomuchheat*temperatureincreasesExampleCasualchainpatternCuttingdownforests

Cause

Wedestroynaturebycuttingdownhugeareasofforests.Effect1Effect2Effect3Effect4Thegreenhouseeffectbecomesworse.Thehomesofanimalsaredestroyed.Thesurfaceofthesoilisdestroyedbyrain.Floodstakeplaceandmoredamageisdonetotheenvironment.ExampleSinglecause--manyeffectspatternBadhabits

Cause

Peopleoftenusethingsonceandthenthro