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Unit15We’retryingtosavethemanatees!SectionB(1a-2c)设计者:王梅教学目标:1.能用目标语言谈论如何保护环境，拯救地球。2.能听懂2a，2b的听力内容，完成相应的练习3.能用2a，2b的短语来描述保护环境4.运用所学语法、句型进行会话训练5.通过学习，培养学生爱护环境的意识.教学重点：1.能用2a，2b的短语来描述保护环境2.运用所学语法、句型进行会话训练教学步骤:步骤1：歌曲引入，创设情境,引出问题：以一首杰克逊的《Earthsong》导入，体会歌曲中的意境，引出问题。Task1:Discoverproblems:Whatdidtheearthusetobelike?Whatistheearthlikenow?1.Thetrees____________________.2.Theanimals____________________.3.People___________________.4.Thesoil____________________.5.Theairandwater____________________.1.Thetreeshavebeen____________________.2.Theanimals___________________.3.Peoplehavemet____________________.4.Thesoil______________________.5.Theairandwater_____________________.usedtogrowwellcutdownusedtolivefreelyarekilled/endangeredusedtolivehappilykindsofdisastersusedtoberich.isnotsuitableforplantstogrowusedtobefreshandcleanhavebeenpollutedTask1.Discoverproblems.Whathappenedtotheearth?Tsk2.Analyze(分析)problems1.Endangeredanimals4.Pollution2.Naturaldisasters3.Desertification沙漠化Task2.Analyze(分析)problems：Therearestillmanyworld’sproblemsinrecentyears.Especially：步骤2：图片引导，新授内容：讨论环境污染，学习相关句型。通过呈现一些环境污染的画面，直观发现污染问题，继而引发讨论环境污染欲望，并间接引出学习相关句型.1.Endangeredanimals2.Peoplehuntwildanimalsformoney.3.Thehabitats（栖息地）oftheanimalsarebeingdestroyed.1.Someofthehabitatshavebecomepolluted.2.Thereisn’tenoughfoodforallofthem.1.Peoplehavedestroyedthebalanceofnature.2.Naturaldisastersearthquakesfloodsdroughtsmud-rockflowswindstorms3.Desertification（沙漠化）Lotsoftreeshavebeencutdown.Withoutwater,thelandbecomesdesert.Thewindcausedlanddesertification(沙漠化)Forestbecomedesert4.PollutionWhatkindsofpollutionaretheycalled?airpollutionwaterpollutionwhitepollutionnoisepollutionsoilpollution步骤3：提出问题，解决问题：操练1a、1b。Whatcanwedotostopthepollutionandhelpsavetheplanet?Task3.Solvetheploblem:Whatareyoudoingnow?Whatwillyoudointhefuture?Whatwouldyouneverdo?1completethefollowingprashs:1.停止驾驶汽车2.回收书籍的纸张3.当你离开房间时关4.当你在洗头时关上淋浴5.不使用纸巾或餐巾纸.Whatelsecanwedotohelpsavetheplanet?Ranktheitemsformthe⑵easiesttothemostdifficult.Howtosavetheplanet?Checkeasy(E)ordifficult(D).____*stopridingincars.___*recyclebooksandpaper.____*turnoffthelightswhenyouleavetheroom.____*refusetousetheplasticbags.____*don’tputthewastewaterintotheriver.____*plantmoretreesandgrass.ED1a1bA:Recyclingbooksandpaperisreallyeasy.B:Iagree.Butit’sdifficulttostopridingincars.DEEEWorkinpair:步骤4：自主探究，归纳总结：练习听力2a、2b。并进行会话表演。解读重点词汇短语,练习组织本单元话题.Pairwork:Compareyouranswers.a.ListenandcheckthethingsthatJuliaisdoing.b.Listenagain.CheckthethingsthatJuliaisdoingnow,thethingsshewilldointhefutureandthethingsshewouldneverdo.c.Roleplayaconversationusingtheinformationformthechartabove.Saywhatissureforyou.重点语句解读：1.Recyclingpaperisreallyeasy.a.本句的主语为动词短语recyclingpaper,recycle为及物动词，意为“再循环，回收利用”。eg：Theglassfrombottlescanberecycled。2.Iknow,Istoppedusingthemlastyeara.stoptodosth.eg：WhenLiMingcame,Istoppedtotalkwithhim.b.stopdoingsth.eg：Whentheteachercamein,Istoppedtalking.c.stop…(from)doing.eg：Wemust...