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1、GrammarandusageUnit3PastperfecttenseStep1Self-studyGuidanceLearningaims1.Reviewthebasictenseformslearnedbefore.2.Learnandmastertheimportantgrammaritemsofthepastperfecttense.3.Finishsomerelativeexercisestopractisewhatwehavelearned.4.Improveourabilityofu
2、singthegrammaritemscorrectlywiththeteacher’shelp.Self-studyoutlineandrequirements1.Reviewthebasictenseformslearnedbefore.2.Analyzethesentencesgiveninthestudyplan.3.Finishthetasksinfiveminutes.时态一般进行完成完成进行现在时does/dohas/havedone过去时didwas/weredoing将来时过去将来
3、时动词时态表Step2Self-studyChecking时态一般进行完成完成进行现在时does/dohas/havedone过去时didwas/weredoing将来时过去将来时动词时态表am/is/aredoinghas/havebeendoinghaddonewill/shalldowill/shallbedoingwould/shoulddoBythe1920s,hehadbecomean…Upontheirenteringthetomb,Carter’sluckypetbird,which
4、hehadleftinCairo,wasswallowedbyasnake.AfewmonthsafterCarterhadopenedthetomb,...Lead-in：PastperfecttenseHowcanweformthepastperfect?had+verb-edStep3Groupwork&ExpansionTheusageofthepastperfectUpontheirenteringthetomb,Carter’sluckypetbird,whichhehadleftinC
5、airo,wasswallowedbyasnake.CarterlefthisluckypetbirdinCairo.Carter’sluckypetbirdwasswallowedbyasnake.PastPresentWhenIwokeup,ithadstoppedraining.HehadleftwhenIarrived.Shetoldmethatshehadwrittenanewnovel.IfoundthewatchwhichIhadlost.总结一:过去完成时表示一个动作或状态在过去某一
6、时间或动作之前已经完成或结束，即发生在“过去的过去”。这是一个相对的时态,只有和过去某一时间或某一动作相比较时才使用它。Bytheendoflastyear,myfatherhadworkedinthefactoryfortwentyyears.Bysixo’clockhehadworkedelevenhours.Theusageofthepastperfect总结二:过去完成时表示某一动作或状态在过去某时之前已经开始，一直延续到这一过去时间，而且动作尚未结束，仍然有继续下去的可能。Ihadwant
7、edtohelpbutcouldnotgetthereintime.Theyhadhopedtobeabletocomeandseeyou.Theusageofthepastperfect总结三:动词think,want,hope,mean,plan,intend等用过去完成时来表示过去未曾实现的想法，希望，打算或意图等。Hardlyhadhebeguntospeakwhentheaudienceinterruptedhim.Nosoonerhadhearrivedthanhewentawayaga
8、in.Itwasthethirdtimethatshehadbeenoutofworkthatyear.ItwasthemostinterestingnovelthatIhadeverread.Theusageofthepastperfect总结四:过去完成时还可用在hardly(scarcely)…when…,nosooner…than…,Itwasthefirst(second,etc)time(that)…,Itwasthemost...that...等固定句型
