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

;Learningobjectives;1.HongKong___________(return)toChinain1997.;一、什么是过去完成时？;Past;;(1)表示在过去某一时间或动作以前完成了的动作,即“过去的过去”。可以用by,before等介词短语或一个时间状语从句来表示。;1.IhadintendedtovisithimyesterdaybutIwasn’tabletomakeit.

2.Hehadwishedtobecomeadoctor,buthestudiedlawatcollege.

3.Theyhadwantedtohelpbutcouldnotgetthereintime.;1.ItwasthefirsttimethatIhadmadesuchamistake.

2.Itwastwoyearssincehehadlefthishometown.;1.Scarcelyhadhearrivedwhenhewentawayagain.

2.NosoonerhadIwalkedoutthanIrememberedthatIforgotmybag.

3.Hardlyhadwesatdowntosupperwhenthephonerang.;1.I___________(eat)lotsofcakessofar.

2.I_________(eat)lotsofcakestillthen.

3.Tom____________(finish)writinghisnovelbytheendoflastyear.

4.Tom____________(finish)writinghisnovel.

5.Tom________________(finish)writinghisnovelbytheendofnextyear.

6.Tom_________(finish)writinghisnovellastyear.;7.Ithoughtthattheletter___________________(send)aweekbefore.;1.Tomhaseatenhissupper.

2.Tomhadeatenhissupperinthecanteenbeforehewent

backhome.

1.Thefamilyhavenotfinishedbreakfast.

2.Thefamilywerestillattable,buttheyhadfinished

breakfast.;过去完成时的被动语态是过去完成时态和被动语态的结合。表示过去某一时间以前已经被完成的动作，常与by，before等引导的时间状语连用。由“had＋been＋过去分词”构成。;

表示过去某一时间或某一动作前已发生且已完成的动作或状态。主语与谓语动词之间存在被动关系如：

Theworkhadbeenfinishedbyusbynineo’clockyesterday.

Gracerealizedamistakehadbeenmadebyher.

Theprojecthadbeencompletedbytheendof1999.

;Summary;;;;Self-assessment;