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1、The Past Perfect Tense过去完成时,By the time I got outside,the bus hadalready left.,Revision,I got home,My little brother went to bed,By the time I got home,my little brother had gone to bed,过去完成时的判断依据:,由“过去的过去”来判定。,过去完成时表示“过去的过去”，先发生的动作用过去完成时，后发生的动作用一般过去时。,When I got to the station,the train had already
2、 left.,After he had finished his homework,he went to bed.,first,first,We had learned English 4 years by last year.,5 years ago last year now,had learned,By the time I got outside,the bus had already left.,现在完成时：,助动词have/has+过去分词,过去完成时：,助动词had+过去分词,构成？,过去分词的构成,规则动词的变化：,a)一般情况下在动词后面加 ed,work-worked,pl
3、ay-played,b)以 e 结尾的动词直接加 d,use-used,refuse-refused,c)以辅音字母加 y 结尾的动词，把 y 改 i 再加 ed,study-studied,carry-carried,d)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 ed,stop-stopped,drop-dropped,写出下列动词的过去完成时形式be _ see_begin _ sing_bring_ open_,had been,had seen,had begun,had sung,had brought,had opened,用法1,1.过去完成时动词表示过去某一
4、时间或某一动作之前完成的动作或状态。在强调过去某一动作发生在另一动作之前时。,过去完成时：,在强调过去某一个动作发生在另一个动作前常常用过去完成时态。,1.他说他以前见过你。,He said that he _(see)you before.,had seen,2.到六点钟为止他们已经工作八小时了。,By six oclock they _(work)for eight hours.,had worked,When I got to the check-out,I realized I had left my purse at home.,2.过去完成时词可以表示过去某一时刻之前发生的动作或呈
5、现的状态，这一动作一直持续 或将继续下去。,By six oclock they _(work)for eight hours.,When I came to GZ,he _(be)there for a long time.,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。,had worked,had been,3.到上个月中旬我们在北京住了有五年时间了。,By the middle of last month we _(live)in Beijing for five years.,had lived,用法2,3.过去完成时和 already,just,
6、ever,yet 等连用表示过去的过去。,例如：1.他告诉我说他们队已经赢了。,He told me that his team _ already _(win).,had,won,2.她说她仍没去过长城。,She said that she _(not go to)the Great Wall yet.,hadnt been to,用法3,By the time we got there,the bus had already gone.,We got there at 7:00,The bus left at 6:59,4.过去完成时与when,before,as soon as,till
7、/until 等引导时间状语的从句连用，强调动作发生的时间前后。,例如：1.她到家之前她的孩子已经睡着了。,When she got home her children _(sleep).,had slept,2.在他们到达之前电影已经开始了。,Before they arrived here the film _ already _(start).,had,started,Last night,as soon as I _(finish)my work I went to sleep.,3.我完成作业了就去睡觉了。,had finished,用法4,by the time（=when）,我们
8、赶到学校时，已经上课了。,到时,_ we got to school,the class _ already _,By the time,had,begun.,当我到达火车站时，火车已经开走了。,By the time I _ to the station,the train _ already _.,got,had,left,到上学期末，我们共学 1500 个单词。,By the _ of _ term we _ _1,500 words,end,last,had learnt,当他到学校时，他意识到他把作业忘在家里了。,When he _ to school,he _ that he _
9、his homework at home.,had left,got,realized,Before I met her,I had heard a lot about her.,Before/When/By the time,+,过去时态,+,从句,过去完成时态,主句,1.到昨晚上，他已写完那封信。,By yesterday evening he _(write)that letter.,2.他说他以前见过你。,He said that he _(see)you before.,3.当我进来时，他已做完了作业。,When I came in he _(finish)his homework.
10、,had written,had seen,had finished,1.After he _(finish)his work he went out.,had finished,2.The children ran away after they _(break)the window.,had broken,3.I went to Toms house but he _(go)out.,had gone,Exercises:,4.Annie told me that his father _(go)to Paris and he _(come)back in a few days.,had gone,would come,5.My friend _(buy)the car two years ago.He _(buy)it for two years.,bought,has had,Thanks！,
