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1、Unit13we’retryingtosavetheearth!SectionA(1a-2d)LiGenLaShuMiddleSchool背景知识本单元以“环境保护”为话题，通过讨论大气污染、水污染和废弃物污染等造成的原因以及我们如何做去改善环境，着重复习时态和语态等语法知识。TeachinggoalsLanguagegoals：Targetlanguage:We’retryingtosavetheearth.Peoplearethrowinglitterintotheriver.Theriverusedtobesoclean.Ever
2、yoneshouldhelptocleanuptheriver.1.Grammar:Presentprogressive,thepasttense,modalverbs2.Wordsandexpressions;litter,bottom,fisherman…Usefulexpressions:befullof,put…into,throw…into,cleanup,playapartin,closedownAbilitygoals:totrainstudents’listeningabilityandtotrainstudents’c
3、ommunicativecompetence．Moralgoals：Everyoneshouldkeepourriversclean.TeachingpointWe’retryingtosavetheearth.Teachingdifficulti-es1.totrainstudents’listeningability．2.totrainstudents’communicativecompetence．TeachingProducesStep1.Warimingupandleading-in:Warmingup:Tointroduce
4、studentstotheunitgoal,talkaboutpollutionandenvironmentalprotection.Leading-in:Byfishing1aThefourpicturesshowdifferentformsofenvironmentalpollution.Thefirstpictureontheleftshowsanairplaneflyingoversomehouses.Theairplaneseemstobeflyingaquitealowaltitude,sothenoiselevelmust
5、bequitehighfoethepeoplelivinginthesehouses.Thisisconsiderednoisepollution.Thesecondpictureshowssomevehiclesgiveoutexhaustfumesandcausingairpollution.Inthethirdpicture,weseebigchimneysgivingoffaloofsmokeandpollutingtheair.Thelastpictureshowsarubbishdumphatpollutestheenvir
6、onmentaroundit.Whatotherthingscausepollution?AskSstocompletetheactivityasaclass,thenworkinpairstothinkofmorewordstoaddtothelistsforeachcolumn.Step2.ListeningTohelpSsrecognizethetargetlanguageinnaturalspeech.Everyoneneedstoplayapart:Intheconversation,theboysaretalkingabou
7、ttheriverintheirtownbeingpollutedbylitterandindustrialwaste.Oneofthemwantstowritetothegovernmentabouttheproblem,buttheotherboywiselysaysthatcleaninguptheriveriseveryone’sresponsibility,notjustthegovernment’s.PredictingtheanswersSsworkinpairstopredicttheanswerstotheactivi
8、ty,thenplaytherecordingforSstofillinthegapsandreviewanswersasaclass.Step3.PracticeTogiveSsguidedpractic
