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1、牛津高中英语(模块二·高一上学期)AdvancewithEnglishGrammarandusageUnit3PastperfecttenseUnit3课件描述：以观察—发现—讨论—归纳—运用为主要教学模式，充分利用本单元语言素材，通过多种图示和语法规则的呈现，让学生比较全面系统地掌握过去完成时的用法、一般过去时与过去完成时的用法区别及现在完成时与过去完成时的用法区别。Lead-inWhat’sthetopicofUnit3?Howmanyamazingpeoplehavewereadaboutinthisunit?Whoarethey?Canyoutellmesomethingab
2、outHowardCarter?Lead-inUpontheirenteringthetomb,Carter’sluckypetbird,whichhehadleftinCairo,wasswallowedbyasnake.Whatverbtensesareusedinthesentence?PastperfecttenseHowcanweformthepastperfect?Reread“Thecurseofthemummy”andunderlinethesentencesinwhichthepastperfecttenseisused.had+verb-edBythe1920s,
3、hehadbecomean…Upontheirenteringthetomb,Carter’sluckypetbird,whichhehadleftinCairo,wasswallowedbyasnake.AfewmonthsafterCarterhadopenedthetomb,...…PastperfecttenseTheusageofthepastperfectUpontheirenteringthetomb,Carter’sluckypetbird,whichhehadleftinCairo,wasswallowedbyasnake.Carterlefthisluckypet
4、birdinCairo.Carter’sluckypetbirdwasswallowedbyasnake.PastPresentTheusageofthepastperfectPastPresentThepastperfecttenseshowsus“过去的过去”.PastSummary:Thepastperfecttenseisoftenusedwiththesimplepasttense.Ifoneactionhappensbeforeanotherinthepast,thepastperfecttenseisused.Theusageofthepastperfect“Wehid
5、theentrancetothetomb,”saidCarter.Cartersaidthattheyhadhiddentheentrancetothetomb.PastPresentTheyhidtheentrancetothetomb.Cartersaidthattheyhadhiddentheentrancetothetomb.Summary:Thepastperfecttenseisoftenusedtorefertoanactionthathadalreadyhappenedatthetimeofspeaking.TheusageofthepastperfectIhaddo
6、nemyhomeworkthismorningbeforeIwenttothemuseum.PastPresentIhaddonemyhomeworkthismorning.Iwenttothemuseum.Summary:Theuseofthepastperfecttensesimplyindicatesthatanactioncomesbeforeanotherpastaction.Itdoesnotmeanthatthepastactionhappenedalongtimeago.TheusageofthepastperfectBythe1920s,hehadbecomeane
7、xplorer,searchingforthetombsoftheEgyptiankings.PastPresentHehadbecomeanexplorer.The1920sSummary:Thepastperfecttenseisoftenusedwithtimeexpressionssuchaswhen,after,before,assoonas,until,by,forandalready.Anotheramazingperson—AmeliaEa
