;;Sensetheusageofthepastperfecttense;一、什么是过去完成时？;IhadfinishedmyworkbeforeIwentouttoplayfootball.;;二、过去完成时的构成;—Hadyouvisitedherebefore?
—Yes,Ihad./No,Ihadnt.;三、过去完成被动时基本用法;2．叙述过去发生的事情，在已叙述了过去发生的事
情后，反过来追述或补述以前发生的动作时，常
使用过去完成时。;Hesaidthathehadknownherwell.
IthoughtIhadsenttheletteraweekbefore.;例:
①Wehadhopedthatyouwouldbeabletovisitus.
②Ihadmeanttotakeagoodholidaythisyear,but
Iwasnotabletoleave.;;;;动词think,want,hope,mean,plan,intend,wish,expect,suppose等用过去完成时来表示过去未曾实现的想法、希望、打算或意图等。;;;;归纳：过去完成时的常见时间状语和句型;过去完成时与一般过去时
1.过去完成时：在过去某一时间或动作之前已经发生或完成了的动作，表示动作发生的时间是过去的过去。
一般过去时：过去某一时间所发生的动作或存在的状态。
2.过去完成时：助动词had+动词的过去分词，助动词had没有人称和数的变化。
一般过去时：动词的过去式did/were/was。;1.Shereturnedhomeand________(find)allherfurniture______________(ruin)bytheflood.
2.ThisMondaymorningIwasinformedI________(choose)asoneofthreeexchangestudentsfromourcollege.
3.Arthurwassurprisedbecausethetornado_________(take)thefeathersoffhischickens.
4.He________(try)todrivebacktohishomebeforethefloodpassedthroughthevillage.;1.BeforeIknewitanhour______________(pass)anditwastime
tomoveontolunch.［全国III卷］
2.Likemanymilitarymedals,theoneZacsmother
______________(find)wasafamilytreasure.［浙江卷］
3.Arescueworkerriskedhislifesavingtwotouristswho
____________________(trap)inthemountainsfortwodays.［北京卷］
4.Mabrysaidhe(notplan)todomuchfor
hismilestonebirthday,sohewashappythatthestudents
(prepare)thesurprisecelebration.［天津卷］;句型转换：
A:Thechefhadsetupafarmtotablerestaurantbeforehisnewcookbookworkbookwaspublished.
B:Anewfarmtotablerestaurant__________________bythechefbeforehisnew
cookbookwaspublished.
A:TheyhadfinishedtheirdinnerbythetimeSamjoinedthem.
B:Their