Unit+5+Revealing+nature+Using+language+导学案 高二英语外研版（2019）选择性必修第一册

主题语境人与自然认识与探索自然班级：__________姓名：___________XB1U5UsinglanguagePastperfect导学单Learningobjectives:1.Learnbasicstructureandfixedsentencepatternofpastperfect.2.Masterhowtousepastperfectcorrectlyinthepassage.课前Observeandsummary定义：表示在过去的某一时间或某一动作之前已经完成的动作或存在的状态。它表示句子中描述的动作发生在“过去的过去”。注：过去完成时一定有一个表示过去的参照点。a.BeforeIgottothebusstation,thebushadleft.b.BythetimeIgotbacktoschool,thebellhadrung.Summary:Thestructureofpastperfect:____________课中Roadtopastpefect一、过去完成时的构成为：肯定式为__________________；否定式为__________________；被动式为__________________。过去完成时的基本用法：1.常与时间状语“by+表示过去的时间”；when/before/after+表示过去时间Bynineo'clocklastnight,we____________(finish)mostofthework.到昨晚9点钟，我们已经完成了大部分的工作。Beforewegottothetrainstation,thetrainhadalreadyleft.我们到达火车站之前，火车就已经离开了。2.表示在过去某一时刻之前已经开始并一直延续到这一时刻的动作或状态,常和for,since引导的时间状语连用。Hesaidhehadworkedinthatfactorysince1949.他说自从1949年以来他就在那家工厂工作。Whenwalkingdownthestreet,IcameacrossDavid,whomIhadn'tseenforyears.当沿着街道散步时,我偶然遇到了戴维,我已多年未见过他。3.某些动词的过去完成时表示过去未实现的希望、计划或打算。常用的动词有hope,expect,suppose,think,want,wish,mean,plan,intend等。Theyhadwantedtohelpbutcouldn'tgethereintime.他们本来想要来帮忙的,但未能及时赶到这儿。IhadhopedtosendhimaChristmascard,butIforgottodoso.我本来想送他一张圣诞节贺卡,但把这事给忘了。Wehadintendedtocomeandseeyou.我们本来打算来看你的。过去完成时的常用的固定句型：1.在“It/Thatwasthefirst/second…timethat...”此句型中，主句用了一般过去时，that引导的定语从句要用过去完成时ItwasthefirsttimethatIhadvisitedtheGreatWall.这是我第一次参观长城。2.“Itwas+一段时间+since从句”，since从句谓语用过去完成时Itwasthreeyearssincehehadjoinedthearmy.他参军三年了。在句型Hardly…when…和Nosooner…than…中，主句常用过去完成时,从句用一般过去时，表示“一……就……”。①Hardlyhadhegotintohisbigofficewhenthetelephonerang.他刚进入他的大办公室,电话铃响了。②Nosoonerhadhearrivedthanhewasaskedtoleaveagain.他刚到就被要求离开。4.在句型Ifonly,I’drather中，用过去完成时，表示“要是...就好了”；“宁愿”。①Ifonlywehadlistenedtotheiradvice.我们要是听他的建议就好了。②I’dratheryouhadn’tbeenpresent.我宁愿你当时不在场。Haveatry1.He___________(learn)3000wordsbeforehewenttoEngland.2.Theoldmantoldusthathe__________(travel)tomanyplaces.3.Itwasthethirdtimethathe___________(see)suchalargeanimal.4.Bythetimehegottotheairport,theplane____________(takeoff)5.Marydidherhomeworkand_______(wash)thedishes.四、一般过去时与过去完成时的区别:①.过去完成时在时间上________________，而一般过去时强调_________________。②.时态标志词不同：一般过去时：_________________________________________等。过去完成时：___________________________________________等。课后PracticeAssignment:Ⅰ.Fillintheblankswiththeappropriateformsoftheverbsinbrackets.1.Byyesterdaythey___________(work)forsixdays.2.Bythemiddleoflastmonthwe________(live)inBeijingforfiveyears.3.WhenIcametoGuangzhou,he________(be)thereforalongtime.4.Beforetheyarrivedherethefilm____already______(start).5.I____________(intend)tomeethimattheairport,butIhadanimportantmeetingtoattend.6.Heenteredtheroom,__________(turn)onthelightandreadaneveningpaper.7.Nosoonerhadhearrivedthanhe_______(go)awayagain.8.Itwasthethirdtimethathe___________(be)outofwork.9.Shereturnedthebookthatshe______________.(borrow)10.IthoughtthatI_________(see)himbefore.Ⅱ.Microwriting(Mary’sjournal)(5minutes)1.___________________________________（上周日，我本打算出去散步，但是在早上就开始下雨,intend）.SoIwenttothemovieswithmybestfriend.2.___________________________________（当我起床的时候，我的狗已经把桌子上我的早餐都吃了。bythetime）.ThenIwenttoseethefilm,hungry,3.__________________________（但是当我到电影院的时候，电影已经放映20分钟了。beon放映）.4._____________________________（这是我第一次和我最好的朋友一起看电影。）anditwasthemostinterestingmoviethat