人教版八年级英语下册《nit 9 Have you ever been to an amusement park.Section B》课件_1

1、Present Perfect Tense,现在完成时（一）,（）,教学目标 一 、知识目标 1、进一步掌握现在完成时的构成、一般疑问句及否定句的构成、 用法和时间状语 2、能够判断现在完成时与一般过去时的区别 3、掌握一些常见动词的过去分词形式 、能力目标 通过练习让学生学会找关键词的做题技巧 三、情感目标 增强学生对现在完成时了解的自信心,Little Women? Have you ever read it?,I havent read it yet.,But I have had the book for ten years.,And I have kept it on my book

2、shelf(书架） since ten years ago.,Have you ever read Little Women?,I havent read it yet.,But I have had the book for ten years.,And I have kept it on my bookshelf(书架） since ten years ago.,3.现在完成时的用法,2.一般疑问句及否定句的结构,1.现在完成时的构成,4. 时间状语,2.一般疑问句及否定句的结构,3.现在完成时的用法,1.现在完成时的构成,4. 时间状语,主语+havehas+动词过去分词,助动词：,ta

3、lk - like - study - stop -,havehas,动词过去分词变化规则：,talked,liked,studied,stopped,2.一般疑问句及否定句的结构,3.现在完成时的用法,1.现在完成时的构成,4. 时间状语,Have/Has + 主语 + 动词过去分词,疑问式：,I have finished my homework.,Have you finished your homework?,2.一般疑问句及否定句的结构,3.现在完成时的用法,1.现在完成时的构成,4. 时间状语,Have/Has + 主语 + 动词过去分词,否定式:,主语 + have/has +

4、not + 动词过去分词.,一般疑问式（特殊疑问句？）,We have visited the museum. (改为一般疑问句) 2)They have seen the film. (改为否定句) 3)He has returned the book. (对划线部分提问) 4)Jenny has had her lunch for three days. (改为一般疑问句并做否定回答),Have you visited the museum?,have not=havent,has not=hasnt,2.一般疑问句及否定句的结构,3.现在完成时的用法,1.现在完成时的构成,4. 时间状语

5、,Have/Has + 主语 + 动词过去分词,否定式:,主语 + have/has + not + 动词过去分词.,疑问式：,We have visited the museum. (改为一般疑问句) They have seen the film. (改为否定句) 3)He has returned the book. (对划线部分提问) 4)Jenny has had her lunch for three days. (改为一般疑问句并做否定回答),They havent seen the film.,2.一般疑问句及否定句的结构,3.现在完成时的用法,1.现在完成时的构成,4. 时间

6、状语,Have/Has + 主语 + 动词过去分词,否定式:,主语 + have/has + not + 动词过去分词.,疑问式：,We have visited the museum. (改为一般疑问句) 2) They have seen the film. (改为否定句) He has returned the book. (对划线部分提问) 4)Jenny has had her lunch for three days. (改为一般疑问句并做否定回答),What has he returned?,2.一般疑问句及否定句的结构,2.一般疑问句及否定句的结构,3.现在完成时的用法,1.现

7、在完成时的构成,4. 时间状语,Have/Has + 主语 + 动词过去分词,否定式:,主语 + have/has + not + 动词过去分词.,疑问式：,We have visited the museum. (改为一般疑问句) 2)They have seen the film. (改为否定句) 3)He has returned the book. (对划线部分提问) 4)Jenny has had her lunch for three days. (改为一般疑问句并做否定回答),Has Jenny had her lunch for three days?,No,she hasnt

8、.,2.一般疑问句及否定句的结构,3.现在完成时的用法,1.现在完成时的构成,4. 时间状语,present(now),future,past,Mum, I have already(已经) cleaned them.,John, clean your teeth please.,2.一般疑问句及否定句的结构,3.现在完成时的用法,1.现在完成时的构成,4. 时间状语,1)过去发生或已经完成的某一动作对现在造成的影响或结果。,2)现在完成时表示从过去一直持续到现在的动作或状态。,Someone has broken the door. (窗户现在是坏的) I have already lost

9、 the key. (我现在没有钥匙) I havent read that book yet . (不了解书的内容) I have just cleaned my hands. (手是干净的),2.一般疑问句及否定句的结构,3.现在完成时的用法,1.现在完成时的构成,4. 时间状语,1)过去发生或已经完成的某一动作对现在造成的影响或结果。,2)现在完成时表示从过去一直持续到现在的动作或状态。,She has learned English for 5 years. He has lived in Beijing since ( 自从)he was born . Have you stayed

10、 here since ( 自从) 3 oclock?,2.一般疑问句及否定句的结构,3.现在完成时的用法,1.现在完成时的构成,4. 时间状语,Have you ever read Little Woman?,I havent read it yet.,But I have had the book for ten years.,And I have kept it on my bookshelf(书架） since ten years ago.,3.现在完成时的用法,2.一般疑问句及否定句的结构,1.现在完成时的构成,4. 时间状语,2.一般疑问句及否定句的结构,3.现在完成时的用法,1.

11、现在完成时的构成,4. 时间状语,for+时间段,since+,Mr. Brown has had his TV _ 15 years. Ive taken driving lessons _ last month. My sister has had her cell phone _ a month . My friends havent visited me _ my birthday. We havent used our car _ a long time . She hasnt had a good cup of coffee _years. Tom has worn glasses

12、 _ he was 7 years old.,for,for,for,for,since,since,since,时间点,句子,2.一般疑问句及否定句的结构,3.现在完成时的用法,1.现在完成时的构成,4. 时间状语,for+时间段,since+,时间点,句子,already(已经) yet(已经) just(刚刚) ever(曾经) never(从来没有） before（从前）,肯定句中,否定，疑问句末,肯定句中,肯定、否定句中,句中,句末,请大家认真分析比较下列各例句：,I saw this film yesterday. （只说明动作发生在过去。） I have seen this fi

13、lm. （强调对现在的影响，电影的内容已经知道了。） She has returned from Paris.（她已从巴黎回来了。） She returned yesterday. （她是昨天回来的。） He has been in the League for three years. (在团内的状态可延续) He joined the League three years ago.( 三年前入团，joined为短暂行为。) 注意：句子中如有一般过去时的时间副词（如 yesterday, last week, in 1960）时，不能使用现在完成时，要用过去时。例如： （错）Tom has

14、written a letter to his parents last night. （对）Tom wrote a letter to his parents last night.,一般过去时与现在完成时之比较,1）一般过去时表示过去某时发生的动作或单纯叙述过去的事情，强调动作，和现在不发生关系。而现在完成时表示过去发生的某一动作对现在造成的影响或结果，强调的是现在的情况。 2）一般过去时常与具体的时间状语连用，而现在完成时通常与模糊的时间状语连用，或无时间状语。, 一般过去时的时间状语有：yesterday, last week，ago, in1980, in October, just

15、 now,等具体的时间状语。 现在完成时的时间状语有：for, since, ever, never, just, already, yet, in past years,等不确定的时间状语。,This is A game 比赛 开始啦！,看看哪个小组得到的最多,Lets go!,eat- see- read- keep- have- be- leave- make- go- meet- come- write- tell- buy- find- build-,built,found,told,come,gone,left,had,read,eaten,bought,written,met,m

16、ade,been,kept,seen,一、写出下列动词的过去分词形式,1.I _(wait) for him for two hours . I am very angry . 2.He _ (be) a doctor since he was twenty . 3.The film _ (be) on for fifteen minutes . 4._ you ever _ (read) that book before ? 5._ you ever _ (try) to change her ? 6. No one _ (arrive) here yet . 7._ the bus _ (

17、leave) yet ? 8.I _ (not talk) to him yet .,Havent talked,Has left,has arrived,Have tried,Have read,has been,has been,have waited,二、用所给动词的适当形式填空,9.I_already_(see)thefilm.I_(see)it lastweek. 10.Look!Themonkey_(climb)thetree. 11.Myfather_just_(come)backfromwork.He istirednow. 12.Thestudents_(read)Engli

18、shwhentheteachercamein. 13.I_(work)heresinceI_(move)herein1999. 14.SofarI_(make)quiteafewfriendshere. 15.Howlong_theWangs_(stay)here?For twoweeks. 16.I_just_(finish)myhomework. 17.He_(go)toschoolonfooteveryday. 18._you_(find)yoursciencebookyet?,is climbing,were reading,moved,have worked,have made,go

19、es,have stayed,have finished,Have found,saw,have seen,has come,1. She has done her homework. (改否定句) 2. She has already told us the news. (改否定句) 3. The rain has already stopped. (改一般疑问句) 4. I have waited here for two hours. (划线提问) 5.He has lived in ShangHai since he left Beijing. (划线提问) 6. She has learned French since 2002. (同意句) She has learned French _ 2 years. She has learned French _ 2 years _.,She hasnt done her homework.,She hasnt told us the ne