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1、-)自主学习(自学阶段)一、预习目标：A：知识与技能目标：复习并掌握本课单词和短语environmentbeimprovedenvironmentaicauseworseandworseB：过程与方法目标：ReadandunderstandPairworkWritec：情感态度与价值观：教育学生会发现问题，并能尝试去解决问题，尽自己的一份力量保护我们的环境。二、预习重难点：现在进行时、usedto句型、被动语态、现在完成时和情态动词的结构及用法。三、预习任务：完成课本3a,self-check1、2、3.四、预习诊断：I.用所给词的适当形式填空。1.Theoldm
2、anused(be)ateacher.2.Weshould(clean)theroomeveryday.3.Look!Tom(sleep)inhisroom.4.Lotsoftrees(plant)onthehilleveryyear.5.He(live)herefor20years.五、预习质疑I•预习中尚不能解决的问题2.希望老师讲解的重点内容(二)课堂实施(导学阶段)13.61・预习交流小组展示交流预习学案，确定教学重难点。II•精讲点拨Teachingsteps3aThinkabouttheenvironmentinyourtownorcity.Thent
3、akenotesusingthequestions.1.Whichpartsofthetownorcityhaveaniceenvironmentandwhy?2.Whichpartsmaybelessniceandneedtobeimproved?Why?WritingWritealettertothecitymayorabouttheproblemsandyoursuggestions.Usetheinformationsin3btohelpyou.写作指导Inthefirstparagraph,describetheenvironmentalproblems
4、inyourtown•Inthesecondparagraph,givesuggestionsorpossiblewaystosolvetheproblems.参考范文TheProblemsOfOurNaturalEnvironmentDearmayor,Nowadaystheproblemsofournaturalenvironmenthavebecomeincreasinglyserious.Atpresenttherearemanykindsofenvironmentproblemsincludingenvironmentpollution,desertif
5、icationandtheextinotionofwildanimals,andsoon.Beforewetakeanymeasurestopreventthepollution,maybeweworkitoutthatwhatarethecausestotheseproblems?Theproblemswerecausedbythenaturaldisasters,suchastheearthquake,flood,drought,typhoon,mud-rockflowandsoon.Forexample,thewateriswastedandpolluted
6、,thatcomesglobalshortageoffreshwater;theairispollutedbytheindustrialwastegashatcomesacidrainandozonedepletion;Thecityisourhome.Airandwateraffecteveryone.Sowehavethedutytotakecareofitforourselvesandforourlatergenerations.First,moreandmorepeopleshouldconcernabouttheenvironmentalproblems
7、,suchasteachers,studentsandcitybuilders.Then,thegivingoffofthepoisonousgasshouldbelimitedbyfactories.Finally,inordertoseekbenefits,somebusinessmenpollutetheenvironment.Measuresshouldbeentakentocopewiththeseproblemsbythegovernment.Solawsshouldbeenpassedtostoppollution.Allinall,humanciv
8、iliza
