英语过去完成时.pptx

构成：助动词had+动词的过去分词（V.pp)用法：1.过去完成时动词表示过去某一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。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 seen2.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第1页/共9页过去分词的构成：1.规则动词的变化：a)一般情况下在动词后面加 ed work-worked play-playedb)以 e 结尾的动词直接加 d use-used refuse-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 94-96 页过去完成时的构成：由助动词had+动词的过去分词（V.pp)第2页/共9页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.用法：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 workedhad been3.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第3页/共9页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.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 writtenhad seenhad finished第4页/共9页3.过去完成时和 already,just,ever,yet 等连用表示过去的过去。用法：例如：1.他告诉我说他们队已经赢了。He told me that his team _ already _(win).hadwon2.她说她仍没去过长城。She said that she _(not go to)the Great Wall yet.hadnt been to第5页/共9页用法：过去完成时与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。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 slept2.在他们到达之前电影已经开始了。Before they arrived here the film _ already _(start).hadstartedLast 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第6页/共9页1.After he _(finish)his work he went out.had finished2.The children ran away after they _(break)the window.had broken3.I went to Toms house but he _(go)out.had gone4.Annie told me that his father _(go)to Paris and he _(come)back in a few days.had gonewould come5.My friend _(buy)the car two years ago.He _(buy)it for two years.boughthas had第7页/共9页第8页/共9页感谢您的观看！第9页/共9页