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构成：助动词had+动词的过去分词（V.pp)用法：强调过去某一动作发生在另一动作之前。强调“过去的过去”他说他以前见过你。Hesaidthathe______________(see)youbefore.hadseen1.用于宾语从句中，表示在说话前已完成。可和already,never,ever,yet等连用。Eg:1.他告诉我说他们队已经赢了。Hetoldmethathisteam_________already___________(win).hadwon2.她说她仍没去过长城。Shesaidthatshe_______________(notgoto)theGreatWallyet.hadn’tbeento过去分词的构成：1.规则动词的变化：a)一般情况下在动词后面加edwork------workedplay--------playedb)以e结尾的动词直接加duse------usedrefuse------refusedc)以辅音字母加y结尾的动词，把y改i再加edstudy-----studiedcarry-----carriedd)以重读闭音节结尾的，前面有单个元音字母时，双写辅音字母，再加edstop----stoppeddrop-------dropped2.不规则动词的变化见课本18---19页过去完成时的构成：由助动词had+动词的过去分词（V.pp)2.还可与when,before,assoonas,till/until等引导时间状语的从句连用，强调动作发生的时间前后。eg：1.她到家之前她的孩子已经睡着了。Whenshegothomeherchildren____________(sleep).hadslept2.在他们到达之前电影已经开始了。Beforetheyarrivedherethefilm_________already___________(start).hadstartedLastnight,assoonasI_______________(finish)myworkIwenttosleep.3.我完成作业了就去睡觉了。hadfinished3.表过去的过去已开始，这一动作一直持续或还将持续下去。Bysixo’clockthey____________(work)foreighthours.WhenIcametoGZ,he_____________(be)thereforalongtime.1.到了六点钟为止，他们已经工作了八小时了。2.我到广州时，他在那里很长时间了。hadworkedhadbeen3.到上个月底我们在北京住了有五年时间了。Bytheendoflastmonthwe______________(live)inBeijingforfiveyears.hadlived1.到昨晚上，他已写完那封信。Byyesterdayeveninghe___________(write)thatletter.3.当我进来时，他已做完了作业。WhenIcameinhe________________(finish)hishomework.过去完成时与bythen(截止到那时);by9o’clock(直到九点钟)bytheendof…(在…结束/末之前);bythetime…(在…时之前);uptillthen(直到那时);upuntillastnight(直到昨晚）等连用，表示过去的过去。hadwrittenhadfinished时间标志词1.Afterhe______________(finish)hisworkhewentout.hadfinished2.Thechildrenranawayafterthey___________(break)thewindow.hadbroken3.IwenttoTom’shousebuthe__________(go)out.hadgone4.Annietoldmethathisfather____________(go)toParisandhe____________(come)backinafewdays.hadgonewouldcome5.Myfriend__________(buy)thecartwoyearsago.He________________(buy)itfortwoyears.boughthashad