单元：Unit1Talesoftheunexplained板块：Grammarandusage1Thoughtsonthedesign:LearnthegrammarPresentperfecttenseandPresentperfectcontinuoustense.Teachingobjectives:1.Learnhowtoformandusethepresentperfecttense.2.Understandwhenthepresentperfectcontinuoustenseisusedinsentences.Teachingprocedures:Step1Lead-inGooverthenewsstoryonPage2andfindthesentencesusingthepresentperfecttense.Pleaseexplainwhythetenseisusedinthesesentences.Step2Presentperfecttense1.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:alreadyeverforjustlatelyneverrecentlysinceyetExercise: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,beenStep3Presentperfectcontinuoustense1.Theformofthepresentperfectcontinuoustense:have/hasbeendoing2.TalkabouttheusesofthepresentperfectcontinuoustenseA.WesometimesusethePresentperfectcontinuoustensetotalkaboutactionsthatstartedinthepastandarestillcontinuing.表示过去开始的动作一直延续到现在并仍在继续之中。IhavenotbeensleepingwellsinceIreturnedhome.“我”回家后一直都没有睡好，现在也没有睡好。B.Wealsousethepresentperfectcontinuoustensetotalkaboutactionsthathavejustfinishedbutarestillconnectedtothepresentinsomeway.表示过去开始的动作刚结束并在某种情况下与现在有关联。Kelly：SorryI'mlate．Haveyoubeenwaitinglong?Sally：Yes．Ihavebeenwaitingforanhour.凯利刚到，对方虽然不再等了，但已一直等到现在。3.Fillinthemissingwordsonpage9Answers:(1)havebeentalking(2)havebeentaking(3)havebeenstudying(4)haveseen(5)havebeenwritingStep4Homework1.PrepareGrammarandusageonpage10-11.2.FinishPartC1andC2onpage88inWorkbook.
