过去完成时态课件

用法：
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。
1. 到了六点钟为止，他们已经工作了八小时了。
By six o’clock they ____________ had worked (work)for eight hours.
2. 我到广州时，他在那里很长时间了。
用法：
3. 过去完成时和 already, just, 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 _________ had already won ___________ (win). 2. 她说她仍没去过长城。 She said that she _______________(not hadn’t been to go to) the Great Wall yet.
2. 他说他以前见过你。 He said that he ____________(see) had seen you before. 3. 当我进来时，他已做完了作业。 When I came in he ________________(finish) had finished his homework.
过去的过去 （过去完成时）
1.He said he had been to Hawaii twice.
2.They wondered if the bus has gone.
3.By the end of last year, he had learned 1000 English words . 4.He had gone to England before 2000 5.When I got there, Mr. Li had left .
过去分词的构成： 1. 规则动词的变化：
过去完成时的构成：由助动词 had + 动词的过去分词（V.pp)
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 94---96 页
过去完成时态
The Past Perfect Tense
定义：过去完成时是一个相对的时态，表
示的时间是过去的过去。只有和过去某时 或某动作相比较时才用到这个时态。
构成: had+过去分词
我们可以用time line来比较过去完成时与 一般过去时的不同，也比较两种时态。
时间 过去 现在 （过去时）
had finished (finish) his work he went out. 1. After he ______________ had broken (break) 2. The children ran away after they ___________ the window. had gone (go) out. 3. I went to Tom’s house but he __________ had gone ( go ) to 4. Annie told me that his father ____________ would come ( come ) back in a few days. Paris and he ____________ 5. My friend __________ bought (buy) the car two years ago. He ________________ (buy) it for two years. has had
6.My mother had looked before he came .
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 ห้องสมุดไป่ตู้e ______________ had seen (see) you before. 2. 到六点钟为止他们已经工作八小时了。 By six o’clock they ______________(work) had worked for eight hours.
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 slept 2. 在他们到达之前电影已经开始了。 Before they arrived here the film _________ had already started ___________ (start). 3. 我完成作业了就去睡觉了。 had finished Last night, as soon as I _______________ my work I went to sleep. (finish)
When I came to GZ , he _____________(be) had been there for a long time.
3.到上个月中旬我们在北京住了有五年时间了。
had lived By the middle of last month we ______________(live) in Beijing for five years.
过去完成时与 by then(截止到那时); by 9 o’clock(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。 1. 到昨晚上，他已写完那封信。 By yesterday evening he ___________ had written (write) that letter.