2019-2020年高中英语 Unit 3《Amazing People-grammar and usage》教案5 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5牛津译林版必修2Herewewilllearntorecognizesituationswherethepastperfecttenseisusedandthetimeexpressionsusedtogetherwiththetense.Wewillalsoseehowthetenseisformed.Youwillreadtwostoriesandpletethemusingthecorrectverbfor

2、ms.Payattentiontothedifferencesbetweenthepastperfecttenseandthesimplepasttense.Step1:PastperfecttensePastperfecttenseisusedtoindicatethatoneactionoccurredbeforeanotheractioninthepast.Inotherwords,pastperfecttenseindicatesthefirstofthetwoactions.FormofPastPerfec

3、t[had]+[pastparticiple]Examples:IhadstudiedalittleEnglishwhenIcametotheU.S.TheyhadnevermetanAmericanuntiltheymetJohn.Note:WhenyouareusingaverbtensewithmorethanonepartsuchasPastPerfect(hadmet),adverbsoftenebetweenthefirstpartandthesecondpart(hadnevermet).USE1ple

4、tedActionBeforeSomethinginPastThePastPerfectexpressestheideathatsomethingoccurredbeforeanotheractioninthepast.Itcanalsoshowthatsomethinghappenedbeforeaspecifictimeinthepast.Examples:IhadneverseensuchabeautifulbeachbeforeIwenttoKauai.HadyouevervisitedtheU.S.befo

5、reyourtripin1992?Yes,IhadbeentotheU.S.oncebeforein1988.USE2DurationBeforeSomethinginthePast(Non-continuousVerbs)WithNon-progressiveVerbsandsomenon-progressiveusesofMixedVerbs,weusethePastPerfecttoshowthatsomethingstartedinthepastandcontinuedupuntilanotheraction

6、inthepast.Examples:Wehadhadthatcarfortenyearsbeforeitbrokedown.BythetimeAlexfinishedhisstudies,hehadbeeninLondonforovereightyears.IMPORTANTSpecificTimeswiththePastPerfectUnlikethePresentPerfect,itispossibletousespecifictimewordsorphraseswiththePastPerfect.Altho

7、ughthisispossible,itisusuallynotnecessary.EXAMPLE:ShehadvisitedherJapaneserelativesoncein1993beforeshemovedinwiththemin1996.IfthePastPerfectactiondidoccurataspecifictime,theSimplePastcanbeusedinsteadofthePastPerfectwhenbeforeorafterisusedinthesentence.Thewordsb

8、eforeandafteractuallytellyouwhathappensfirstsothePastPerfectisoptional.Bothsentencesbelowarecorrect.EXAMPLE:ShehadvisitedherJapaneserelativesoncein1993beforeshemovedinwithth