Unit 3 Food and Culture Discover Useful Structures 课件-2024-2025学年高二英语人教版（2019）选择性必修第二册.pptxVIP

DiscoveringUsefulStructuresUnit3FoodandCulture高二—人教版选修二—英语—第三单元

授课老师：黄惠君

1.HongKong___________(return)toChinain1997.returned2.Macao___________(return)toChinain1999.returned3.HongKong_________________(return)toChinabeforeMacaocameback.hadreturned过去完成时pastperfecttenseLeadin

LearningobjectivesBytheendofthisclass,youwillbeableto:1.recognizeandsummarizethemeaning,formanduseofthepastperfecttenseandthepastperfectpassivevoice;2.usethepastperfecttenseandthepastperfectpassivevoicetodescribeasituationthathappenedinthepast.

Pastperfecttenseisusedtotellanactivitydonebeforesomethinginthepast.Soitisusedinabackgroundofpast.1.Whatispastperfecttense?过去完成时表示过去某个时间之前已经发生的动作或一直延续的动作或状态。→“过去的过去”HongKonghadreturnedtoChinabeforeMacaocameback.presentpastpastperfectfutur2.Structureofpastperfecttense①否定句：HongKonghadn’treturnedtoChinabeforeMacaocameback.②一般疑问句：HadHongKongreturnedtoChinabeforeMacaocameback?HongKonghadreturnedtoChinabeforeMacaocameback.PastPerfectTenseActiveVoice肯定否定疑问

3.Usageofpastperfecttense用法一：用于有时间状语before/by(theendof)+过去时间时。1.Wehadpaintedthehousebeforewemovedin.2.Ihadfinishedreadingthenovelbynineo’clocklastnight.3.Theyhadcompletedtheprojectbytheendoflastyear.

3.Usageofpastperfecttense1.IhadintendedtovisithimyesterdaybutIwasn’tabletomakeit.2.Hehadwishedtobecomeadoctor,buthestudiedlawatcollege.3.Theyhadwantedtohelpbutcouldnotgetthereintime.用法二：用于think，want，hope，wish，plan，intend等动词表示过去未曾实现的想法、希望、打算或意图等。

3.Usageofpastperfecttense1.ItwasthefirsttimethatIhadmadesuchamistake.2.Itwastwoyearssincehehadlefthishometown.用法三：用于固定句型It/This/Thatwas+the序数词+time+that从句；Itwas+一段时间+since从句。

3.Usageofpastperfecttense1.Scarcelyhadhearrivedwhenhewentawayagain.2.Nosooner