牛津译林版高中英语必修二unit 1《tales of the unexplained》（grammar and usage）教学设计1

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1、单　　元：Unit1Talesoftheunexplained板　　块：Grammarandusage1Thoughtsonthedesign:LearnthegrammarPresentperfecttenseandPresentperfectcontinuoustense.Teachingobjectives:1.Learnhowtoformandusethepresentperfecttense.2.Understandwhenthepresentperfectcontinuoustenseisusedin

2、sentences.Teachingprocedures:Step1Lead-inGooverthenewsstoryonPage2andfindthesentencesusingthepresentperfecttense.Pleaseexplainwhythetenseisusedinthesesentences.Step2Presentperfecttense1.Theformofthepresentperfecttense:has/havedone.2.Talkabouttheusesoftheprese

3、ntperfecttense.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.Wealsousethepresentperfecttensetotalkabou

4、tsomethingthatstartedinthepast,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:alreadyeverforjustl

5、atelyneverrecentlysinceyetExercise:Completethefollowingsentenceswiththepropertense.(1)Wehavestudied(study)Englishforaboutfiveyears.(2)Theyhavelived(live)inthesouthsincetheirdaughterwasborn.(3)Ihaveread(read)yourarticlethreetimes.It’swellwritten.(4)Thestudenth

6、asfinished(finish)herhomeworkalready.(5)Erichasjustgone(go)backtohishometown.Weusealreadyforaffirmativestatementsandyetfornegativestatements.Weusefor+aperiodoftimeandsince+apointintime.D.Weusethepresentperfecttensetotalkaboutactionsthatwerecompletedonlyashort

7、timeago.Inthiscase,justisused.Payattentiontothepositionofjust.Thepolicehavejustfinishedsearchingthearea.E.Wecanalsousethepresentperfecttenseforrepeatedactions,thatis,weusethepresentperfecttensewiththetimeexpressionsonce/twice/threetimes…3.Readthediaryentryand

8、thencompleteitusingthecorrectformsoftheverbsinbrackets.Answers:(1)saw(2)hasvisited(3)loves(4)hasn’tvisited(5)hasswum(6)hasnevermet(7)hasdived(8)hasfound(9)hasn’tfound(10)Has,beenStep3Pres