2019-2020年牛津译林版高中英语必修2 Unit 1 Tales of the unexplained-Grammar and usage 教案

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2019-2020年牛津译林版高中英语必修2Unit1Talesoftheunexplained-Grammarandusage教案lTeachingaims1.TeachSstoformandusethepresentperfecttense.2.TeachSstolearnhowtoformandusethepresentperfectcontinuoustense.3.Tellthedifferencebetweenthepresentperfecttenseandthepresentperfectcontinuoustense.lTeachingproceduresStepⅠLead-in1.MakeSstolookatthefollowingsentencesandpointoutwhattenseortensesareusedinthemandthereasonwhytheyareused.1)WehavestudiedEnglishforaboutfiveyears.Webegantostudyitfiveyearsago.2)Theymovedtothesouthin1990andhavelivedtheresincethen.3)Thestudentisdoingherhomework.Shehasn’tfinishedityet.4)Ericlefthomelastyearandhasjusteback.Takesentenceoneasanexample:ThetimewebegantostudyEnglishwasatadefinitetimeinthepast,soweusethepastsimpletense.Buttheactionstudyhappensagainandagain,soweusethepresentperfecttense.TellSs:Whenanactionhappensoveraperiodoftimethatbeganinthepastandcontinuestothepresent,thepresentperfecttenseisoftenused.StepⅡReadingAskSstoreadpoint1—6onpage8andexplainthereasonswhytheyareusedinthesesentences. ThenaskSstoreadpoint1—3onpage9.TellSsthatweusepresentperfectcontinuoustensetotalkaboutactionsthatstartedinthepastandarestillcontinuing,orhavejustfinishedbutarestillconnectedtothepresentinsomeway.Examples:I’vebeenwaitingforanhourandhestillhasn’tturnedup.I’msosorryIamlate.Haveyoubeenwaitinglong?StepⅢDifferencebetweenPresentperfectandpresentperfectcontinuoustenseparethefollowingsentences:LiuJiahasreadabookaboutStonehenge.(Shehasfinishedreadingthebook.)LiJiahasbeenreadingabookaboutStonehenge.(Sheisstillreadingthebook.)IhavevisitedEgypttwicethismonth.IhavebeentouringEgyptfortwomonths.Howmanytimeshaveyouswuminthelake?Howlonghaveyoubeenswimminginthelake?Similarities:Differences:StepⅣ现在完成时&一般过去时的区别JustindisappearedlastFridaynight.Justinhasdisappeared,soKellyisverysad.②Ihaveseenthefilm.Isawthefilmlastweek.•总结：______________________Practice1:1.I_____Englishatuniversityforthreeyears,butnowI’veforgotit.A.havestudiedB.hadstudiedC.studiedD.havebeenstudying2.—Haven’tseenyouforages.Wherehaveyoubeen?—IwenttoTibetand_____(stay)thereteachingEnglishasavolunteerforthree years.StepⅤPractice1.FinishPartC1andC2onpage88inWorkbook.2.ReviewTaskpart.