2019-2020年高中英语 Unit 3《Amazing People-Grammar and Usage》教案1 牛津译林版必修2

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1、2019-2020年高中英语Unit3《AmazingPeople-GrammarandUsage》教案1牛津译林版必修2Herewewilllearntorecognizesituationswherethepastperfecttenseisusedandthetimeexpressionsusedtogetherwiththetense.Wewillalsoseehowthetenseisformed.Youwillreadtwostoriesandpletethemusingthecorrectverbforms.Payattentiontothediffe

2、rencesbetweenthepastperfecttenseandthesimplepasttense.Step1:PastperfecttensePastperfecttenseisusedtoindicatethatoneactionoccurredbeforeanotheractioninthepast.Inotherwords,pastperfecttenseindicatesthefirstofthetwoactions.FormofPastPerfect[had]+[pastparticiple]Examples:Ihadstudiedalittle

3、EnglishwhenIcametotheU.S.TheyhadnevermetanAmericanuntiltheymetJohn.Note:WhenyouareusingaverbtensewithmorethanonepartsuchasPastPerfect(hadmet),adverbsoftenebetweenthefirstpartandthesecondpart(hadnevermet).USE1pletedActionBeforeSomethinginPastThePastPerfectexpressestheideathatsomethingoc

4、curredbeforeanotheractioninthepast.Itcanalsoshowthatsomethinghappenedbeforeaspecifictimeinthepast.Examples:IhadneverseensuchabeautifulbeachbeforeIwenttoKauai.HadyouevervisitedtheU.S.beforeyourtripin1992?Yes,IhadbeentotheU.S.oncebeforein1988.USE2DurationBeforeSomethinginthePast(Non-cont

5、inuousVerbs)WithNon-progressiveVerbsandsomenon-progressiveusesofMixedVerbs,weusethePastPerfecttoshowthatsomethingstartedinthepastandcontinuedupuntilanotheractioninthepast.Examples:Wehadhadthatcarfortenyearsbeforeitbrokedown.BythetimeAlexfinishedhisstudies,hehadbeeninLondonforovereighty

6、ears.IMPORTANTSpecificTimeswiththePastPerfectUnlikethePresentPerfect,itispossibletousespecifictimewordsorphraseswiththePastPerfect.Althoughthisispossible,itisusuallynotnecessary.EXAMPLE:ShehadvisitedherJapaneserelativesoncein1993beforeshemovedinwiththemin1996.IfthePastPerfectactiondido

7、ccurataspecifictime,theSimplePastcanbeusedinsteadofthePastPerfectwhenbeforeorafterisusedinthesentence.ThewordsbeforeandafteractuallytellyouwhathappensfirstsothePastPerfectisoptional.Bothsentencesbelowarecorrect.EXAMPLE:ShehadvisitedherJapaneserelativesoncein1993beforeshemovedinwithth