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1、Unit13We'retryingtosavetheearth!TheThirePeriodSectionA3(GrammarFocus-4c)TeachingPeriodsThispartwilltakeoneortwoperiods.TeachingAimsKnowledgeGoals1.KeyVocabularyugly,cost,wooden,plastic,takeaway,bin,shark,fin,method,cruel.2.TargetLanguageWe'retryingtosavetheearth!Theriv
2、erusedtobesoclean.Theairisbadlypolluted.Emotionandmoralgoalstohaveawarenessofenvironmentalcrisis,learntopayattentiontotheenvironment,protecttheenvironment.Teachingimportantpoints1.KeyVocabularylitter,advantage,bottom,fisherman,coal2.TargetLanguageWe'retryingtosavetheea
3、rth!Theriverusedtobesoclean.Theairisbadlypolluted.Teachingdifficultpointstousethepresentprogressivetense,thepresentperfecttense,thepassivevoice,themodalverbandtheusedtosentencepattern.ProceduresandMethodsAccordingtodesigningsometasks,trainstudents'listeningabilityandhe
4、lpstudentstoexpresstheiropinionfreely．TeachingMulti-mediaAtaperecorder,Multi-mediateachingsystem,somepicturesandobjectsneeded.TeachingproceduresI.Revision1.Checkifyouknowthesephrases.1)thedifferentkindsofpollution2)intheriver3)puttherubbishintotheriver...4)playarolein5
5、)inthesouthoftheChinese......6)harmful7)In......8)atthetopofthemarineecosystem2.TranslatethesesentencesintoEnglish.1)Eventheriverisfullofrubbish.2)Thismethodisnotonlycruelbutalsoharmfultotheenvironment.3)Sharksareatthetopoftheoceanfoodchain.4)Manypeoplebelievethatshark
6、finisgoodforhealth.II.GrammarFocusPayattentiontothesentences.1)We'retryingtosavetheearth.2)Theriverusedtobesoclean.3)Theairisbadlypolluted.4)Noscientificstudieshaveshownthatsharkfinsaregoodforhealth.5)Weshouldhelpsavethesharks.1.PresentProgressiveDefinition:theactofrep
7、resenting(aninstant)ofanongoingaction,asofthepresentorongoingaction.Structure:be(am/is/are)+v.-ingSymbolwords：Look,Listen,now,rightnow…e.g.Look!Theboyiscrying.2.usedtodo与beusedtodoingusedtodosth.beusedtodoingsth.e.g.Iusedtogetupatsixo'clock.Joeisusedtodrinkingacupofcof
8、feeeverymorning.3.PassivevoiceDefinition:thesubjectisthebeareroftheaction,thevoiceoftheobjectofaction.Structure：be+Pa
