过去完成时经典PPT文档格式.ppt

1、20 nowhad cleaned theroomclosed the windowShe had cleaned the room before she closed the window.After she had cleaned room,she closed the window.1.（first）ate an apple2.（then）slept nowhad eaten an applesleptShe had eaten an apple before she slept.After she had eaten an apple,she slept.2.（then）played

2、soccer1.（first）did his homework now played soccerhad done his homeworkHe had done his homework before he played soccer.After he had done his homework,he played soccer.Mary ran back to school because she had left her book in the classroom.What happened first?a.Mary ran back to school.b.Mary left her

3、book in the classroom.I got homenow9:00pm8:00pmMy little brother went to bedBy the time I _,my little brother _ to bed.got homehad gone I got to schoolnow8:158:00amThe teacher came into the classroomBy the time I _,the teacher _ into the classroom.got to schoolhad comeBy the time I _,The bus left at

4、 five to eight.I got outside at eight.the bus _already _.went outhadleft by:在在之前，不迟于之前，不迟于 by noon,by tomorrow,by last week,by 6:00,by the end of到到末为止末为止 by the time 到到的时候的时候By the time I got home,By the time I came in,By the time I got to school,By the time she got outside,the bus had already left.

5、她出去的时候她出去的时候,公共汽车已经开走了公共汽车已经开走了.by the time 意思是意思是“到到的时候的时候”,相当于相当于 when引导的从句引导的从句,后接后接过去时过去时的句子时的句子时,主语的谓语动词用主语的谓语动词用had+过去分词，过去分词，也就是过去完成时也就是过去完成时.I got homenow9:00pmMy little brother went to bedBy the time I got home,my little brother had gone to bed.弟弟上床睡觉在我回家之前。弟弟上床睡觉在我回家之前。I got to schoolnow8:

6、00amThe teacher came into the classroomBy the time I got to school,the teacher had come into the classroom.老师进入教室在我到达学校之前。老师进入教室在我到达学校之前。When/By the timeBefore/After+过去时态+从句过去完成时态主句the policeman get to the shopTom run away By the time the policeman got to the shop,nowTom had run awayLiu Mei wake up

7、the concert be over By the time Liu Mei woke up,the concert had been over.now2011 2012 learn 4000 English words By the end oflast yearBy the end of last year,I had learned 4000 new words.The Past Perfect Tense过去完成时1.过去完成时的构成助动词 had（用于各种人称和数用于各种人称和数）+过去分词过去分词 2.过去完成时态的含义:主要是表示在过去某个时间,或是动作之前已经发生或完成的动作

8、.也就是：过去的过去过去的过去.过去完成时的判断依据过去完成时的判断依据:1.由时间状语来判定：一般说来，各种时态都有特定的时间状语。由时间状语来判定：与过去完成时连用的时间状语有：1）by+过去时间点 I had finished reading the book by nine oclock last night.2）by the end of+过去时间点.如 We had learned over 2000 English words by the end of last term.3）before+过去时间点.如They had planted 600 trees before las

9、t Friday.2.由由“过去的过去过去的过去”来判定。来判定。在状语从句中，在状语从句中，先先发生的动作用发生的动作用过去完成时过去完成时，后后发生的发生的动作用动作用一般过去时一般过去时。When I got to the station,the train had already left.After he had finished his homework,he went to bed.first first3.常用在宾语从句中常用在宾语从句中:当宾语从句的主句为一般过去时，且从当宾语从句的主句为一般过去时，且从句的动作先于主句的动作时，从句要用过句的动作先于主句的动作时，从句要用过

10、去完成时。在去完成时。在told,said,knew,heard,thought等动词后的宾语从句。如：等动词后的宾语从句。He told me he had already finished his homework.I realized I had left my keys at home.4.体现在上下文中体现在上下文中 I didnt go to the movies yesterday because I had seen it twice.过去完成时的否定形式：过去完成时的否定形式：过去完成时的疑问形式：肯定回答：否定回答：主语主语had nothadnt+p.p.+其它其它.Ye

11、s,主语主语+had.Had+主语主语p.p.+其它其它?No,主语主语+had+not.1.By the time I got up,my brother already （have）his breakfast.2.By the time I got to the station,the bus already （leave）.3.When I got to school,I realized I （leave）my bag at home.hadhadhadhadleftleft4.He didnt go to the cinema because he _（see）the movie t

12、wice.5.By the end of last year,the workers _（build）three highrises.6.She _（work）on the farm for three years before she became a teacher.had seenhad builthad worked按要求改写下列句子按要求改写下列句子（5/1）Tom had finished his homework before he watched TV.否定句：否定句：疑问句：Tom hadnt finished his homework before he watched T

13、V.Had Tom finished his homework before he watched TV?Yes,he had.No,he hadnt.句型转换句型转换 （10/1）1.He had stood up before he cleaned the window.2._ he had stood up,he cleaned the window.2.His father went to Beijing.He arrived home.3.（用用before合并句子合并句子）4.His father_ _ _ Beijing before he _ home.Afterhad gone toarrivedQuestions:1.What do you usually do in the morning before school?2.Do you like mornings?Why or why not?What do you usually do in the morning before school?brush my teethWhat do you usually do in the morning before school?take a