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.精选范本Unit71.Teachingobjectives：(1)Knowledgeobjectives:①studentscanmastersomekeywordsandexpressionsofthetext.②Studentscanacquiremoreabouttheemphaticsentences.③Studentscanlearnhowtodevelopaparagraphbycomparison&contrast.(2)Abilityobjective:①studentscanimprovetheabilitiesoflistening,speaking,readingandwriting.②Studentscandeveloptheabilitytocollectinformationfromtheinternet.(3)Emotionalobjectives:①studentscanlearnthedifferencebetweenmalesandfemalesinshoppingstyleandavoidbiasagainstothers.②studentscanlearntounderstandandappreciateothers.2.Teachingkeypoints:helpthestudentshaveabetterunderstandingoftheemphaticsentences.3.Teachingdifficultpoints:enablestudentstopracticeassimilationandtalkaboutprices.4.Teachingprocedures:PartOneListeningandSpeakingStep1.Pronunciationandlisteningskills语音同化是英语口语中一种非常普遍的现象。英语语音中的同化现象主要发生在辅音与辅音之间，是相邻音素互相影响的结果，是英语语音音变的重要组成部分。使用同化是为了省力，使说英语更轻松、更自然、更流利。Step2.ConversationsConversation1-Expressingsatisfaction1.Listentoaconversationandcompletethefollowingsentenceswithwhatyouhear.2.Listenagainandcheck(✔)thecorrectanswer3.Role-playaconversationinpairsaccordingtooneofthefollowingsituations.YoumayrefertotheFunctionalLanguage.3.Role-playaconversationinpairsaccordingtooneofthefollowingsituations.YoumayrefertotheFunctionalLanguage.Conversation2-Expressingdissatisfaction1.listentoaconversationandchoosethebestanswertoeachofthefollowingquestions.2.Listenagainandcompletethefollowingsentenceswithwhatyouhear.Step3.Passage1.Completethefollowingtableaboutthehippies.2.Listenagainanddecidewhetherthefollowingstatementsaretrueorfalse.3.Workingroupstodiscussthefollowingquestions.PartTwoReadingPassageAEvolutiondefinesshoppingstyleTeachingProcedureStep1.Lead-inEnjoysomepictureandworkingroupstodiscussthefollowingquestion.Step2.wordslearning1.evolutionn.thegradualdevelopmentofplants,animals,etc人类的进化theevolutionofthehumanspecies在进化的过程中，一些鸟丧失了飞行能力。Inthecourseofevolution,somebirdshavelostthepowerofflight.派生词：evolvev.进化;逐渐演
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