仁愛版九年級英語上冊Unit 2 Topic 2 Section C教案

2Earth2C教教目Learnsomenewandonperiod,of,takeaway,rise,level,referLearnsomeusefulsentences:headroomsunWhenitorwhenwindearthtaken教重難talkaboutharmofsomoremoreanimalsdisappearing.Asaresult,riverslakesharmfulradiationfromthepassesthroughholeandearthdirectly.Itcausesriseandtheclimateearth教準(zhǔn)Taperecorder教過Step自學(xué)綱通過檢查作業(yè)引學(xué)生開拓思提出保護環(huán)境和水資源的具體措施習(xí)定代詞和副詞。為學(xué)習(xí)新詞匯作準(zhǔn)備。T:Howdoyouprotectsavewater?:plantmore1:doeverythingsave2:knowimportanceof3:Passwaterpollution.4

:Collectandwater.5…合互教師由常對話，引出本課話題，呈現(xiàn)部分新詞匯。T:weatherlikeSs:It…T:Asweknow,Beijingofteninspring.Whatbadweather?Ss:Cuttingdowntoomany(展示第幅圖畫)T:Allworld,peoplecutdownmillionsofAndtreesfewer.T:CuttingtootreestheHowaffect:waterfrom1:stop…2:3T:Treescanstopwindwaterfromtheaway.T:Anythingelse?Ss:(許學(xué)生用漢語回答。樹能吸收二氧化碳并釋放氧氣。T:Thatsright.TreesindioxideandbreatheoutT:WhereCOcomefrom?2:’breathing.4:BurningForcars5T:air.Carbonintheairlot.hasformed“”aroundT:heatfromthetescape,sotemperatureisrising.T:“effect”T:ofeffect,whathappensicebergs(川)Ss:Somethemwater.T:itcausestheT:(展示1a幅圖。)PleaselookthisAroundtheakindoxygen“ozone.

T:airisitthatverybiginlayer.T:harmfulradiationthepassesthroughand教師出小黑板上的問題，讓學(xué)生再讀一遍課文后回答。changedinmanypeopledonewellearth?Whyareandmoreofandplantsdisappearing?Aremanyriversandearth?Hascarbondioxidetheincreasedlot?Step導(dǎo)學(xué)納使學(xué)生了解各種污染對地球環(huán)境的影響，培養(yǎng)他們的環(huán)保意識。(1)changeintooharmfulradiation,cause(3)increaselot,blanket,Step家作業(yè)T