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Thepresentperfecttense说课Goodmorning,distinguishedjudges.Thankyouforgivingmethisopportunity.Today,mypresentationwillbedividedinto5parts.Partoneistheanalysisoftheteachingmaterialandthestudents.MyteachingtaskistodealwiththegrammaritemthepresentperfecttenseMystudentsarefromthegrade2ofjuniormiddleschool.Theyhavealreadylearnedthepastsimpletense.Andinthefuturetheyshouldlearnthepastperfecttense.Soit’sveryimportantforthemtomasterthisgrammar.ParttwoismyteachingaimThestudentsshouldmasterthedefinition,structureandusageofpresentperfecttense.Theyshouldunderstandhowtoapplythoserulesinrealsituation.Theyshouldparticipateinactivitiestodescribetheirexperiencesusingthisgrammar.PartthreeistheteachingmethodMyteachingtodaywillbebasedonthesecondlanguageacquisitiontheoriesandthestudent’scognitivelevel.SoIwillusetheguideddiscoverymethodThestudentsarepresentedwithauthenticEnglishtext.Iwillinducethestudentstodiscovertheunderlyinggrammarrulefromthecontext.Theteachergivestheexplicitexplainingofgrammarrules.Partfouristheteachingkeyanddifficultpoints.Howtoletmystudentsdiscoverthegrammarrulesinapositiveandinteractiveway,notjustbyreceivingwhatItellthemdirectly.Partfiveistheteachingprocedures:Myclasswillbedividedinto4steps:preparation,presentation,practice,production.Stepone:preparationFirst,theyshouldtotallyunderstandthepassageinourtextbook.Andthen,theythemselvesbegintogeneralizethegrammarrulesbycomparingandanalyzingthesentencesfromourpassage.Thestudentsmaysayallthesentenceshavethesignal‘ve.Andtheymayregardthepastparticiplesasthepasttense.Atthistime,Iwillcorrectthemandtellthem‘veistheabbreviationofhave.Theformofverbispastparticiplewhichyoucanusedonetorepresent.Thehave+donestructureformsthepresentperfecttense.Steptwo:presentation1.解释概念：在黑板上画好一个时间轴Weusethethepresentperfecttensetotalkaboutthingsthathappenedinthepastbuthaveaconnectiontothepresentinsomeway.（1）Icamehere2yearsagoandthenInevergoanywhereelse.Ihaveworkedherefor2years.即动作发生在过去，但状态持续到现在（2）Youbroughtabottleofwaterhereandleft.Idrankthewater.Thereisnowaterintheglassnow.Thenyoucomebackandaskwherethewateris.Ihavedrunkthewater.即动作发生在过去，但对现在造成一定的影响。Nowlet’sturnbacktoP67.What’sthemeaningofthesefoursentences?2.结构：blackboarddesignLet’sturntoP71have/has+donehave/has在结构中没有实际的含义，不能单独作谓语，必须和后面的动词一起作谓语。Have用于主语是其他人称（Iyouwethey）.Has只用于主语是第三人称单数（hesheit）。Stepthree:practiceIntheend,Iwillsetupsomeactivitiesfromdifferentsituationsonthebasisofstudents’lifeexperiencesandinterests.Mechanicalpractice:substitution&transformationMeaningfulpractice:thenewlylearnedstructuresareusedduringtheprocessofcommunication.Stepfour:productionLetthestudentswriteashortarticleaboutoneoftheirexperiencesusingthegrammar.Afterallthesesteps,IbelievemystudentscanmakefulluseofthisgrammaritemandproduceeffectiveEnglishoutput.Thus,allthestudentscandosomething,speaksomething,andlearnsomethinginmyclass.