高中英语 unit 3《amazing people-grammar and usage》教案1 牛津译林版必修2

《高中英语 unit 3《amazing people-grammar and usage》教案1 牛津译林版必修2》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。

1、Unit3Amazingpeople●GrammarandUsageHerewewilllearntorecognizesituationswherethepastperfecttenseisusedandthetimeexpressionsusedtogetherwiththetense.Wewillalsoseehowthetenseisformed.Youwillreadtwostoriesandcompletethemusingthecorrectverbforms.Payattentiontothedifferencesbetweenthepastperfectt

2、enseandthesimplepasttense.Step1:PastperfecttensePastperfecttenseisusedtoindicatethatoneactionoccurredbeforeanotheractioninthepast.Inotherwords,pastperfecttenseindicatesthefirstofthetwoactions.FormofPastPerfect[had]+[pastparticiple]Examples:IhadstudiedalittleEnglishwhenIcametotheU.S.Theyhad

3、nevermetanAmericanuntiltheymetJohn.Note:WhenyouareusingaverbtensewithmorethanonepartsuchasPastPerfect(hadmet),adverbsoftencomebetweenthefirstpartandthesecondpart(hadnevermet).USE1CompletedActionBeforeSomethinginPastThePastPerfectexpressestheideathatsomethingoccurredbeforeanotheractioninthe

4、past.Itcanalsoshowthatsomethinghappenedbeforeaspecifictimeinthepast.Examples:IhadneverseensuchabeautifulbeachbeforeIwenttoKauai.HadyouevervisitedtheU.S.beforeyourtripin1992?Yes,IhadbeentotheU.S.oncebeforein1988.USE2DurationBeforeSomethinginthePast(Non-continuousVerbs)WithNon-progressiveVer

5、bsandsomenon-progressiveusesofMixedVerbs,weusethePastPerfecttoshowthatsomethingstartedinthepastandcontinuedupuntilanotheractioninthepast.Examples:Wehadhadthatcarfortenyearsbeforeitbrokedown.BythetimeAlexfinishedhisstudies,hehadbeeninLondonforovereightyears.IMPORTANTSpecificTimeswiththePast

6、PerfectUnlikethePresentPerfect,itispossibletousespecifictimewordsorphraseswiththePastPerfect.Althoughthisispossible,itisusuallynotnecessary.EXAMPLE:ShehadvisitedherJapaneserelativesoncein1993beforeshemovedinwiththemin1996.IfthePastPerfectactiondidoccurataspecifictime,theSimplePastcanbeused

7、insteadofthePastPerfectwhenbeforeorafterisusedinthesentence.ThewordsbeforeandafteractuallytellyouwhathappensfirstsothePastPerfectisoptional.Bothsentencesbelowarecorrect.EXAMPLE:ShehadvisitedherJapaneserelativesoncein1993beforeshemovedinwiththemin1996.Shevisite