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1、Unit13We’retryingtosavetheearth.SectionA(1a-2c)一、教学目标1.语言知识目标基本词汇：litter,advantage,bottom,fisherman,coal,ugly,cost,wooden,plastic,takeaway基本词组：beharmfulto,atthetopof,takepartin,takeaction,throwaway,makeadifference基本句型：We’retryingtosavetheearth.Theriverusedtobeso
2、clean.2.技能目标：能正确运用现在进行时，现在完成时，被动语态，情态动词和usedto句型。3.情感目标：有环境保护意识，注意关心关注环境。二、教学重难点1.教学重点：能正确运用现在进行时，现在完成时，被动语态，情态动词和usedto句型；如何保护环境，学会表达保护环境的措施2.教学难点：能正确运用现在进行时，现在完成时，被动语态，情态动词和usedto句型。三、教学步骤Step1LeadinShowsomepicturesoftheearthandtellstudentstheearthispollutedno
3、w.(1)Theriverisfulloftherubbish.Therearenomorefishforfishermentocatch.(1)Theairisbadlypolluted.Theairisfullofhaze.Wedon’thavefreshairtobreathe.Step2Presentation1.Showsomepicturestocomparethepastandpresent.(1)Theskyusedtobeblueandclean,butnowitisbadlypolluted.Ask
4、studentstotalkaboutthereasonstocausetheproblems.(Therearemorecarsontheroad.Factoriesburncoalthatpollutetheair.)Askstudentswhatthingstheycandotosavetheearth.(Wecanridebikestoschool.Weshouldaskthegovernmenttoclosedownthefactories.)(2)Theriverusedtobesoclean,butnow
5、itisbadlypolluted.Askstudentstotalkaboutthereasonstocausetheproblems.(Peoplethrowrubbishintotheriver.Factoriesputwasteintotheriver.)Askstudentswhatthingstheycandotosavetheearth.(Don’tthrowthelitterintotheriver.Weshouldaskthegovernmenttoclosedownthefactories.)(3)
6、Thelandusedtobesoclean,butnowitisbadlypolluted.Askstudentstotalkaboutthereasonstocausetheproblems.(Peoplethrowawayrubbishinpublicplaces.Theythrowwoodenchopsticksandplasticforksinpublicplaces.)Askstudentswhatthingstheycandotosavetheearth.(Don’tthrowthelitterevery
7、where.Wecantakeourownbagswhenweareshopping.We’dbetternotusewoodenchopsticksandtheplasticforkswhenwebuytakeawayfood.)Step3ListeningListentoaninterviewandchoosetherightanswer.1.WhatkindsofpollutionthatJasonandSusantalkabout?
A.landandnoisepollutionB.landandairpoll
8、utionC.noiseandwaterpollution
2.Whyistheairbadlypolluted?
A.TherearemorecarsB.factoriesburncoalC.BothAandB
3.Whyisthelandpolluted?
A.PeoplearethrowingawaythingsB.peop
