SectionAGrammarfocus4a—4c (4).pptx

1、人教版九年级英语,Unit12 Life is full of the unexpected.,Grammar Focus4c,Past perfect tense,过去完成时,Marys morning,Mary had a terrible morning yesterday. She _.Before she_, her brother _ in the shower. By the time she _,the bus _ So she had to_. Oh ,dear. When she _, she realized she_her backpack at home.,overs

2、lept,had already gotten,got outside,had already left,got up,run to school,got to school,had left,What happened to Mary?,What happened to Mary?,Mary had a terrible morning yesterday. She overslept. Before she got up, her brother had already gotten in the shower. By the time she got outside, the bus h

3、ad already left. So she had to run to school. Oh, dear? When she got to school , she realized she had left her backpack at home.,1.Before she got up, her brother had already gotten in the shower. 2.By the time she got outside, the bus had already left. 3.When she got to school , she realized she had

4、 left her backpack at home.,Before she got up, her brother had already gotten in the shower.,now,past,got up,had gotten in the shower,past-in-the-past,By the time she got outside, the bus had already left.,now,past,got outside,had left,past-in-the-past,6:00 7:00 现在,By the time I got up, my sister ha

5、d already washed all the clothes.,Discussion: The structure of the Past perfect tense:（结构） 2.The definition of the Past perfect tense: （定义）,1.Before she got up, her brother had already gotten in the shower. 2.By the time she got outside, the bus had already left. 3.When she got to school , she reali

6、zed she had left her backpack at home.,过去完成时表示在过去某个时间或动作之前已经发生或完成了的动作或存在的状态， 即“过去的过去（ past-in-the-past ）”。,过去完成时的定义:,past in the past,past,now,过去完成时的构成:,had+V-过去分词,eg. The bus had left before Mary went outside.,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,create- created,b) 以辅音字母加 y 结尾的动词，把

7、y 改 i 再加 ed,study - studied,carry - carried,c) 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,get got gotten go went gone leave left left be was/were been take took taken run ran run sleep slept slept oversleep overslept overslept,2. 不规则动词的变化,By the time I _,The bus left at five to

8、eight.,I got outside at eight.,the bus _already _ .,got out,had,left,I got to school,The teacher came into the classroom,Before I _, the teacher _ into the classroom.,got to school,had come,By the time Before When,+,一般过去时态,+,从句,过去完 成时态,主句,过去完成时的用法:,1.Before she got up, her brother had already gotten

9、 in the shower. 2.By the time she got outside, the bus had already left. 3.When she got to school , she realized she had left her backpack at home.,（前面）,1. cleaned the blackboard,2. closed the window,had cleaned the blackboard,closed the window,She had cleaned the blackboard before she closed the wi

10、ndow.,过去的过去,过去,现在,练习,过去完成时：,1.在老师进入教室前, 李磊擦了黑板.,LiLei _ (clean) the blackboard before the teacher came into the classroom.,had cleaned,2. 当我们到那儿时火车已经离开了。,The train _ (leave) when we arrived there.,had left,the policeman get to the shop,Tom run away,By the time the policeman got to the shop, Tom had

11、run away.,now,Liu Mei wake up,the concert be over,By the time Liu Mei woke up, the concert had been over.,now,按要求改写下列句子。 Simon had finished his homework before he watched TV. 否定句： 疑问句： 肯定回答： 否定回答：,Simon hadnt finished his homework before he watched TV.,Had Simon finished his homework before he watch

12、ed TV?,Yes, he had.,No, he hadnt.,拓展,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had nothadnt+ p.p.+其它.,Yes,主语+had.,Had+主语p.p.+其它?,No,主语+had + not.,Sum up:,翻译题 他说他已经写完作业了。,He said he _already _ his homework.,had,finished,（过去完成时还常用于主句是过去时的宾语从句中）,1.We _ ( learn ) 500 words last term. 2.She_ already_ (learn)

13、 four thousand English words by the end of last year.,had,learned,用所给动词的正确形式填空,learned,（过去完成时还常用于和 by + 过去的时间点连用）,过去完成时的判断依据:,由“过去的过去”来判定。,过去完成时表示“过去的过去”，先发生的动作用过去完成时（主句），后发生的动作用一般过去时（从句）。,When I got to the station, the train had already left.,first,1.By yesterday evening he _ that important letter.(write) 2.I thought I _ the man before.(meet) 3.I went to Nicks house,but he _ out.(go) 4.I _ the problem when class was over. (not understand),had written,had met,had gone,hadnt understood,巩固,应用,When Mary got home, she realized she had left her keys in the backpack.By the time she got