湖南省怀化市溆浦县第三中学牛津译林版模块二Unit1Talesoftheunexplained教案单元：Unit1Talesoftheunexplained模块：Grammarandusage1Teachingobjectives（教学目的）:1.Learnhowtoformandusethepresentperfecttense.2.Understandwhenthepresentperfectcontinuoustenseisusedinsentences.Teachingprocedures（教学过程）:Step1Lead-in（学生自主学习）：GooverthenewsstoryonPage2andfindthesentencesusingthepresentperfecttense.Pleaseexplainwhythetenseisusedinthesesentences.学生通过Reading学习以及对现在完成时态的认识，在文中找出含现在完成时态的句子并且背颂这些句子。Step2Presentperfecttense（合作探究——1.学生读课文2.根据学生在文中所找到的含现在完成时态的句子以及屏幕上所展示的句子按学习兴趣小组讨论现在完成时态的结构，概念及常见标志词；）Step2Showingup成果展示每个学习小组派一个代表展示每组的讨论成果，其他不上讲台展示的同学抓紧时间背诵文中含现在完成时态的句子，抽查同学背诵。）Step4Explaining(精讲点拨——结合学生在黑板上所展示及学海导航Page17and18Grammar通过图片及例句讲解现在完成时态的两种概念及结构，特别是现在完成时态的标志词.1.Theformofthepresentperfecttense:has/havedone.2.Talkabouttheusesofthepresentperfecttense.A.Weusethepresentperfecttensetotalkaboutthingsthathappenedintherecentpast,butareconnectedtothepresent.表示过去发生的事对现在仍有影响。ThedisappearanceofJustinhasmadeKellyveryunhappy.(Justin在过去失踪，但Kelly至今仍旧为他的失踪感到不高兴。)B.Wealsousethepresentperfecttensetotalkaboutsomethingthatstartedinthepast,andisstillhappeningnow.表示过去开始的动作一直延续到现在。IhavenotseenJustinsincelastFridaynight.(从上周五晚上到现在一直都没有见到过。)C.Weusethepresentperfecttensewhentheexacttimeofanactionisnotclearorimportant.Weuseitwithtimeexpressionssuchas:alreadyeverforjustlatelyneverrecentlysinceyetStep5巩固提高（学生完成屏幕上所展示的现在完成时态的练习及学海导航Page18and19–2,7,9,15Exercise:Completethefollowingsentenceswiththepropertense.(1)Wehavestudied(study)Englishforaboutfiveyears.(2)Theyhavelived(live)inthesouthsincetheirdaughterwasborn.(3)Ihaveread(read)yourarticlethreetimes.It’swellwritten.(4)Thestudenthasfinished(finish)herhomeworkalready.(5)Erichasjustgone(go)backtohishometown.Weusealreadyforaffirmativestatementsandyetfornegativestatements.Weusefor+aperiodoftimeandsince+apointintime.D.Weusethepresentperfecttensetotalkaboutactionsthatwerecompletedonlyashorttimeago.Inthiscase,justisused.Payattentiontothepositionofjust.Thepolicehavejustfinishedsearchingthearea.E.Wecanalsousethepresentperfecttenseforrepeatedactions,thatis,weusethepresentperfecttensewiththetimeexpressionsonce/twice/threetimes…3.Readthediaryentryandthencompleteitusingthecorrectformsoftheverbsinbrackets.Answers:(1)saw(2)hasvisited(3)loves(4)hasn’tvisited(5)hasswum(6)hasnevermet(7)hasdived(8)hasfound(9)hasn’tfound(10)Has,been
