2023學(xué)年完整公開課版Unit2Topic2SectionC教案

SectionCThemainactivityis1a.本課重點(diǎn)活動(dòng)是1a。Ⅰ.Teachingaimsanddemands教學(xué)目標(biāo)1.Learnsomenewwords:hole,rise,level2.Learntotalkabouttheharmofpollution:(1)Farmlandhasbecomedesert,somoreandmoredifferentsortsofanimalsandplantsare disappearing.(2)Manyriversandlakesarenowdead.(3)Toomuchharmfulradiationnowreachestheearth.(4)Itcausestheleveloftheseatoriseandtheclimateoftheearthtochange.3.Developthestudents’senseofenvironmentprotection.Ⅱ.Teachingaids教具錄音機(jī)/多媒體圖片/小黑板Ⅲ.Five-fingerTeachingPlan五指教學(xué)方案Step1Review第一步復(fù)習(xí)(時(shí)間:8分鐘)(教師從日常用語引出復(fù)習(xí)的內(nèi)容和新的詞匯。)T:What’stheweatherliketoday?Ss:It’s…T:Asweknow,Beijingoftenhassandstormsinspring.Whatcausesthebadweather?Ss:Cuttingdowntoomanytrees.T:Yes.Cuttingdowntoomanytreescausesbadweather.Nowtheweatherisbecomingworseandworse.Peoplesaythatthetemperatureoftheearthisbecominghigherandhigher.Anditisrisingallthetime.Asaresult,theleveloftheseaisrisingandtheclimateoftheearthischanging.(教師板書并講解rise,level,climate。)T:Cuttingdowntreescancauseotherproblems,too.Whatarethey?S1:Thewaterandtheearthwillrunaway.T:Yes.Thenfarmershavenotenoughfarmlandstogrowcrops.(教師解釋farmland。)Step2Presentation第二步呈現(xiàn)(時(shí)間:12分鐘)1.(教師通過讓學(xué)生以組為單位討論其他破壞環(huán)境的因素,來引出本課的詞匯和內(nèi)容。)T:Cuttingdowntoomanytreesdestroysourenvironment.Whatotherthingscandestroyourenvironment?Pleasediscussthisquestion!(學(xué)生兩人一組討論。)T: Whocananswerthisquestion?Group1:Carsandbusescandestroyourenvironment.Group2:Factoriescan…Group3:Throwinglitterabout…Group4:Burningcoal,oil…Group5:…(出示多媒體圖片。)T:Yes.Let’slookatthepicture.Thereisablanketaroundtheearth.Butit’snotareal“blanket”.Youknow,burningcoalwillproduceterriblegas.Amongtheterriblegas,carbondioxideisthemainone.(教師領(lǐng)讀blanket,carbondioxide。)T:Webreatheoutcarbondioxide,andwhatdowebreathein?Ss:“氧氣”。T:Yes,it’soxygen.T:Ifcarbondioxideintheairincreases,whatwillhappen?Ss:Thetemperaturewillrise.T:You’reright.Butwhy?Becausetheheatfromthesuncan’tescape.(教師解釋并領(lǐng)讀escape。)T:Sothegreenhouseeffectwillhappen.(教師領(lǐng)讀thegreenhouseeffect。)(教師出示一張帶洞的白紙。)T:It’sapaperwithabighole.(板書并講解hole。)T:Wecallit“aholeintheozonelayer.”(教師解釋并領(lǐng)讀ozonelayer。)T:Theozonelayerishelpfultotheearthbecauseitcanpreventtheearthfrombeinghurtbyharmfulraysfromthesun.Nowpeoplearedestroyingtheozonelayer,muchharmfulradiationreachestheearth.Here“radiation”mainlyreferstotheradiationfromthesun.(板書)ray,radiationItcanpreventtheearthfrombeinghurt.(教師解釋，并讓學(xué)生反復(fù)讀ray,radiation。)2.T:PleaseturntoPage37,readthepassageandthenchooseapropertitleforeachparagraphfromthephrasesinthebox?Pleaseworkalone.(學(xué)生完成后與教師核對答案。)3.(教師出示小黑板上的問題，讓學(xué)生再讀一遍課文后回答。)1.Havewechangedourplanetinmanyways?2.Arepeoplehavedonegoodfortheearth?3.Whyaremoreandmoredifferentsortsofanimalsandplantsdisappearing?4.Aremanyriversandlakesdeadnow?5.Isozonehelpfultotheearth?Why?6.Hascarbondioxideintheairincreasedalot?(讓學(xué)生個(gè)別回答，完成小黑板上的問題。)4.(讓學(xué)生再次讀課文，完成1b。)T:Readthepassageagain,finish1balone.(學(xué)生完成后，教師與他們核對答案。)Step3Consolidation第三步鞏固(時(shí)間:8分鐘)1.(放1a錄音，讓學(xué)生跟讀兩遍，注意語音和語調(diào)。)T:Readthepassageafterthetape,payattentiontothepronunciationandintonation.2.(讓學(xué)生齊讀課文，保證每一個(gè)學(xué)生參與其中。)T:Nowpleasereadthepassagetogether!3.(教師讓學(xué)生討論并找出新的或不懂的語言點(diǎn)，教師解釋，培養(yǎng)學(xué)生的自主學(xué)習(xí)能力。)Step4Practice第四步練習(xí)(時(shí)間:10分鐘)1.(讓學(xué)生分組討論，完成2。)T:Pleasereadthepassageagain,findoutthemeaningsofthefollowingexpressionsin2,andthendiscusshowtheyaffecttheenvironment.(學(xué)生討論后，與教師核對答案。)2.(讓學(xué)生兩人一組討論，完成下面的表格。)T:Howmanykindsofpollutionarementionedinthepassage?Howdotheyaffectourenvironment?Read1aagain,thenfinishtheformontheblackboard.(板書)KindsofpollutionEffectsStep5Project第五步綜合探究活動(dòng)(時(shí)間:7分鐘)1.(到目前為止，污染危害地球的方式已基本介紹完畢，可以讓學(xué)生做專題討論，以鍛煉他們組織語言的綜合能力。在此過程中，鼓勵(lì)學(xué)生大膽發(fā)揮，做最大程度的拓展性討論，最后通過匯報(bào)，教師檢驗(yàn)活動(dòng)成果。)T:OK,untilnow,wehavelearnedsomanykindsofpollution.Nowpleaseworkingroupsanddiscussthem.Afteramoment,I’llasksomestudentstoreportit.2.Homework:Writeanarticleaboutthepollution.板書設(shè)計(jì)：Alltheseproblemsare