高中英语（人教大纲）第三册：unit4 green world(第二课时)

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1、TheSecondPeriodTeachingAims:1.Getthestudentstolearnandmasterthenewwordsandexpressions:makeattempttodosth.,classify...into,group,haveanappetitefor...,onalargescale,involvein,abandoned2.Getthestudentstolearnthewholetextandgraspthemainideaofittoimprovetheirreadi

2、ngability.3.Learnthefinequalityofthescientistsinthetext.TeachingImportantPoints:1.Mastertheusagesoftheusefulwordsandexpressionsabove.2.Improvethestudents’readingability.TeachingDifficultPoints:1.Theusagesofsomewordsandexpressions.2.Howtotrainthestudents’re

3、adingabilityinlearningthetext.TeachingMethods:1.Explanationtogetthestudentstohaveaclearidea.2.Discussiontogetthestudentsgraspthemainidea.3.Comparisontogetthestudentstounderstandthetexteasier.TeachingAids:1.acomputer2.acourseware3.ataperecorderTeachingPro

4、cedures:StepⅠGreetingsandLead-inTeachergreetsthewholeclassasusual.T:Inthelastperiod,Itoldyoutodescribetheprocessofplantingandgrowthoftheyoungplant.NowI’llletonestudentdothisbeforeclass.ZhangJian,dothis,please....(Teacherasksthreestudentstodothedescription.The

5、nteacherandstudentslearnthenewwordsandexpressionsofthisperiod.Teacherasksonestudenttoreadthemandthenletanotherstudentcorrectthemistakesifthereareany.Intheend,teachergivesbriefexplanationsifnecessary.)StepⅡFast-reading(ShowthepicturesofMichurinandDarwin.)T:Doyo

6、uknowthetwoscientists?Ss:Yes.TheyareMichurinandDarwin.T:Whichcountrydidtheycomefrom,doyouknow?Sa:MichurinwasaRussianandDarwinwasafamousBritishnaturalist.T:Whataretheyfamousfor?Sb:MichurinisfamousforgraftingplantsandDarwinisfamousforhisbook,OntheOriginofSpeci

7、es.T:(Showthefollowingonthescreen.)Inthisclass,we’lllearnaboutsomeotherscientists.TheyareCarlLinnaeus,DanielSolanderandJosephBanks.Readthetextfastandtrytograspthemainideaofthewholetext.Thendotheexercisesonthescreen.Youshouldwritetheans-wersonapieceofpaper.Later,

8、I’llcollectthefirstfivepieces.Readthewholetextandthenchoosethebestanswers.1.Inthesixteenthcentury,botanywasabranchof_________.A.biology　　　　　B.physicsC.astr