过去完成时用法讲解一、过去完成时的概念与结构特点概念：过去完成时表示在过去某一时间或动作之前已经发生或完成了的动作，即“过去的过去（past-in-the-past）”。
----|--------------------|---------------------|------------------>那时以前那时现在构成：过去完成时由“助动词had+过去分词”构成，其中had通用于各种人称。
They had already had breakfast before they arrived at the hotel.She had finished writing the composition by10：00this morning.1）过去完成时态的构成：肯定式：had+动词的过去分词否定式：hadn't+动词的过去分词疑问式：Had…+动词的过去分词简略回答:Yes,主+have/has had.No,主+had现在完成时的用法过去完成时的用法：1、表示在过去某一时间或动作之前已经发生或完成的动作。
他表示的时间是"过去的过去"常与by last year,by the time of yesterday,等连用。
如：She said she had seen the film4times.When Mr Li got to the classroom,all the students had begun reading.By the time they arrived,the bus had left2、表示从过去某一时间开始一直延续到过去另一时间的动作或状态。
常与for(后跟段时间)或since(后跟点时间)等连用.如:She had worked in this school since it opened25years ago.注意：1.过去完成时是一个相对的时态，表示的是“过去的过去”，只有和过去某一时间或某一动作相比较时才使用它。
如：He told me that he had written a new book.(had written发生在told之前)2.过去完成时需要与一个表示过去的时间状语连用，它不能离开过去时间而独立存在。
此时多与already，yet，still，just，before，never等时间副词及by，before，until等引导的短语或从句连用。
如：Before she came to China,Grace had taught English in a middle school for about five years. Peter had collected more than300Chinese stamps by the time he was ten.3.过去完成时表示某一动作或状态在过去某时之前已经开始，一直延续到这一过去时间，而且动作尚未结束，仍然有继续下去的可能。
如：By the end of last year,he had worked in the factory for twenty years.（had worked已有了20年，还有继续进行下去的可能）三、过去完成时常用的连词有：before,by,until,when,after,once,as soon as等例如：He said that he had learned some English before.By the time he was twelve,Edison had began to make a living by himself.Tom was disappointed that most of the guests had left when he arrived at the party.四、在什么情况下使用过去完成时？（判定方法）1.在told,said,knew,heard,thought等动词引导的宾语从句中，一般用过去完成时。
例如：She said(that)she had never been to Paris.2.状语从句在时间、条件、原因、方式等状语从句中，主、从句的动作发生有先后关系，动作在前的，要用过去完成时，动作在后的要用一般过去时。
如：When I got to the station,the train had already left.After he had finished his homework,he went to bed.注意：before,after引导的时间状语从句中，由于before和after本身已表达了动作的先后关系，若主、从句表示的动作紧密相连，则主、从句都用一般过去时。
如：Where did you study before you came here?After he closed the door,he left the classroom.3.表示意向的动词，如hope,wish,expect,think,intend,mean,suppose等，用过去完成时表示“原本……，未能……”。
例如：We had hoped that you would come,but you didn't.典型例题：The students________busily when Miss Brown went to get a book she____in the office.A.had written,leftB.were writing,has leftC.had written,had leftD.were writing,had left例题解析：举一反三，学的更轻松！1.He______in Shanghai University for four years before he______Beijing.A.studied,had goneB.had studied,wentC.has studied,goesD.had studied,had gone2.Mary said it was at least five years since he______a good drink.A.enjoyedB.was enjoyingC.had enjoyedD.would enjoy3.Xiao Pei said she______Hainan for3months.A.has been inB.had been inC.had been toD.had gone to五、过去完成时与现在完成时的区别现在完成时表示的动作发生在过去，但侧重对现在产生的结果或造成的影响，与现在有关，其结构为“助动词 have (has) + 过去分词”；过去完成时则是一个相对的时态，它所表示的动作不仅发生在过去，更强调“过去的过去”，只有和过去某时或某动作相比较时，才用到它。
试比较：I have learned 1000 English words so far. 到目前为止我已经学会了 1000 个英语单词。
I had learned 1000 English words till then. 到那时为止我已经学会了 1000 个英语单词。
— I'm sorry to keep you waiting. 对不起，让你久等了。
— Oh, not at all. I have been here only a few minutes. 没什么，我只等了几分钟。
（“等”的动作从过去某一时间点持续到现在）— John returned home yesterday. 约翰昨天回到家的。
— Where had he been? 他去哪儿了？（答语中使用过去完成时是指约翰在 returned home 之前去了哪些地方，即“过去的过去”）六、过去完成时与一般过去时的区别虽然这两种时态都表示过去发生的动作或存在的状态，但在使用时应注意以下几点： 1. 时间状语不同：过去完成时在时间上强调“过去的过去”；而一般过去时只强调过去某一特定的时间。
试比较：They had arrived at the station by ten yesterday.They arrived at the station at ten yesterday.2. 在没有明确的过去时间状语作标志时，谓语动词动作发生的时间先后须依据上下文来判断：先发生的用过去完成时，后发生的则用一般过去时。
如：She was very happy. Her whole family were pleased with her, too.She had justwon the first in the composition competition.3. 当两个或两个以上接连发生的动作用 and 或 but 连接时，按时间顺序，只需用一般过去时来代替过去完成时；另外，在 before ， after ， as soon as 引导的从句中，由于这些连词本身已经表示出时间的先后，因此也可以用过去时来代替过去完成时。
如：He entered the room, turned on the light and read an evening paper.I (had) called her before I left the office.时态综合例题解析：1.--What are Mr and Mrs Black doing?---They_____tea in the garden.A.are drinkingB.drankC.have drunkD.drink2.My mother often asks me_____early.A.get upB.got upC.getting upD.to get up3.Soon Wu Dong____up with Li Lei,then they were neck and neck.A.taughtB.caughtC.boughtD.brought4.The car____and stopped at the red traffic light.A.got onB.got offC.slowed downD.picked up5.Tom____the CD player for two weeks.A.has lentB.has borrowedC.has boughtD.has had6.---Do you know______?---Sorry,but if he_____back,I____you know as soon as possible.A.when will he be back,comes,will letB.when he will be back,will come,will letC.what time will he be back,will come,letD.what time he will be back,comes,will let7.We____to the park if it is fine tomorrow.A.will goB.have goneC.go8.A new shoe factory will______in this part of the city.A.be buildingB.be builtC.build9.---______all your things,Tom!I hate them here and there.---Ok,Mom.A.Put upB.Put onC.Put downD.Put away10.---How about going hiking this weekend?---Sorry,I prefer____rather than_____.A.to stay at home,go outB.to go out,stay at homeC.staying at home,go outD.going out,stay at hom。