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1、过去完成时,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。,过去完成时：,强调 “过去的过去”,他说他以前见过你。,He said that he _ (see) you before.,had seen,1. 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。,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 G
2、reat Wall yet.,hadnt been to,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 ed,work - worked,play - 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,2. 不规则动词的变化见课本,过去完成时的构成：由助动
3、词had + 动词的过去分词（V.pp),2.还可与when, before, as soon as, 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。,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 t
4、o sleep.,3. 我完成作业了就去睡觉了。,had finished,3. 表过去的过去已开始，这一动作一直持续或还将持续下去。,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.到上个月底我们在北京住了有五年时间了。,By the end of last month we _(live) in Beijing for
5、 five years.,had lived,1. 到昨晚上，他已写完那封信。,By yesterday evening he _ (write) that letter.,3. 当我进来时，他已做完了作业。,When I came in he _(finish) his homework.,过去完成时与 by then(截止到那时); by 9 oclock(直到九点钟) by the end of (在结束/末之前); by the time(在时之前); up till then (直到那时); up until last night(直到昨晚）等连用，表示过去的过去。,had writ
6、ten,had finished,时间标志词,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,Exercises,