过去完成时讲稿.ppt

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1、关于过去完成时第一页，讲稿共二十五页哦1.现在完成时态表示过去发生的动作对现在造成的影响或结果现在完成时态表示过去发生的动作对现在造成的影响或结果 Our teacher has left.We have studied English.I have already finished the homework.He has had his lunch.He has become a doctor.have/has+过去分词过去分词第二页，讲稿共二十五页哦2.某个动作从过去已经开始某个动作从过去已经开始,一直持续到现在一直持续到现在,还有还有可能持续到将来可能持续到将来.动作的持续性要通过一段时

2、间来表动作的持续性要通过一段时间来表示示.(1)recently,in recent years(2)For/in/during/over the last/past 30 years,great changes have taken place in my hometown.(3)Since +过去的某一时刻过去的某一时刻,since nine yesterday since last week since you came since you got home.We havent seen each other since last year.We havent seen each oth

3、er since we graduated from our university.第三页，讲稿共二十五页哦The Past Perfect TensesNew过去完成时第四页，讲稿共二十五页哦现在完成时：助动词助动词have/has+过去分词过去分词过去完成时：助动词助动词had+过去分词过去分词 构成？构成？第五页，讲稿共二十五页哦我认识他三年了。?I have known him for three years.?I had known him when I was a student.我当学生时，就已经认识他了。第六页，讲稿共二十五页哦 我已经做完作业了。表示在说话时已经做完。I ha

4、ve finished my home-work.第七页，讲稿共二十五页哦 在六点以前，我就已经完 成作业了。By six oclock,I had finished my homework.表示在过去的某一段时间（six oclock 以前）已经做完作业，与现在无关。第八页，讲稿共二十五页哦 他们已经吃过早饭了。在他们到旅馆之前他们已经吃过早饭了。They have already had breakfast.They had already had breakfast before they arrived at the hotel.第九页，讲稿共二十五页哦 我从未看过如此令人兴奋的比赛

5、他说他从未看过如此令人 兴奋的比赛。I have never seen such an exciting match before!He said that he had never seen such an exciting match before!第十页，讲稿共二十五页哦过去完成时与现在完成时二者用法基本相同，但现在完成时以现在时间为基点，过去完成时则以过去的时间为基点，与现在无关，即过去的过去。过去完成时常用于宾语从句中;Summary第十一页，讲稿共二十五页哦用于由by,before 等构成的短语引导的从句或者通过上下文表示。具体用法如下：第十二页，讲稿共二十五页哦Before I

6、met her,I had heard a lot about her.Before/When/By the time/ByBy the end of+过去时态+从句过去完成时态主句第十三页，讲稿共二十五页哦（2）by the time（=when）我们赶到学校时，已经上课了。到时_ we got to school,the class _ already _By the time had begun.第十四页，讲稿共二十五页哦 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 _.gothad left第

7、十五页，讲稿共二十五页哦 到上学期末，我们共学 1500 个单词。By the _ of _ term we _ _1,500 wordsendlast had learnt 第十六页，讲稿共二十五页哦 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 _ his homework at home.had left gotrealized第十七页，讲稿共二十五页哦She said they _ _all the preparation _ I came.had madebefore 她说在我来之前她们已经她说在我来之前她们已经做做好了一

8、切准备。好了一切准备。第十八页，讲稿共二十五页哦 当我到达学校时，学生当我到达学校时，学生 们们都已经放学了。都已经放学了。School _ over by the time I _ there.had beengot第十九页，讲稿共二十五页哦 当我迟到当我迟到20分钟到机场分钟到机场时，时，他已经乘出租车去宾他已经乘出租车去宾 馆了。馆了。He _ _ a taxi to the hotel when I _ _ the airport 20 minutes later.had takengot to第二十页，讲稿共二十五页哦当我昨天到达电影院时，电影当我昨天到达电影院时，电影已经开始了。已

9、经开始了。When I got to the cinema yesterday,the film had already begun.第二十一页，讲稿共二十五页哦他说他从来没读过如此有趣的他说他从来没读过如此有趣的故事。故事。He said that he had never read such an interesting story 第二十二页，讲稿共二十五页哦1.（2011天津卷）In the last few years thousands of films all over the wordAhave produced Bhave been producedCare producin

10、g Dare being produced2.（2011北京卷）Experiments of this kind in both the USand Europe well before the Second World WarAhave conducted Bhave been conductedChad conducted Dhad been conductedBD第二十三页，讲稿共二十五页哦3（2011四川卷）19What a mistake!YesI his doing it another way,but without successAwas suggesting Bwill su

11、ggest Cwould suggest Dhad suggested4.（2011辽宁卷）By the time Jack returned home from England,his son_from collegeAgraduated Bhas graduatedChad been Dhad graduated5.（2011湖南卷）It is the most inspiring lecture that I _since I came to this schoolAattended Bhad attendedCam attending Dhave attendedDDD第二十四页，讲稿共二十五页哦感谢大家观看第二十五页，讲稿共二十五页哦