人教版英语八年级下unit9语法（现在完成时）课件

Have you ever been to an amusement park? Grammar Focus,Designer: Mr Gao,Learning aims,1.Learn the grammar focus about The Present Perfect Tense in detail . 2. Learn the differences between The Past Tens and The Present Perfect Tense 3. Exercise,I Structure：have / has 动词过去分词 （1）has用于主语是第三人称单数, have用于其它人称。 （2）动词的过去分词构成分为规则动词和不规则动词。规则动词在词尾加ed，其规则与过去式一样。不规则动词要记住。,The ways of The Present Perfect Tense,表示经历或经验。常与ever或never连用。如： Have you ever been to Hong Kong? Ive never traveled by air. 表示最近发生的动作或情况。常与yet或already连用。如：,用 法,I have already written to her. She hasnt spent much time on it yet. 表示刚刚发生过的动作或事情，常与just连用。 They have just sent us a telegram. She has just come here.,表示过去发生，目前还有可能仍在继续下去的动作或事情。常与since或for连用。 He has lived there since 1950. We have known each other for more than ten years.,结束性动词不能和表示一段时间的时间状语 连用,但是他可以转换成相应的延续性动词.,1.直接用延续性动词 buy have borrowkeep catch(get) a cold have a cold come/go /becomebe put on- wear,2.转换成be+名词 join the army be a soldier Join the Party be a Party member go to school be a student,3.转换成be+形容词或副词 diebe dead finish be over beginbe on leavebe away fall sleep be asleep close be closed,4.转换成 be+介词短语 go to school be in school join the army be in the army,.,1.我们买这本书三年了.,We have had the book for three years.,We bought the book three years ago.,一般过去时态和现在完成时态可以构成 同意句,2.他感冒三天了.,He has had a cold for three days.,He caught a cold three days ago.,3.自从上星期我借的这本书,I have kept the book since last week.,I borrowed the book last week.,4.我成为一个学生两年多了.,I have been a student for over two years.,I became a student two years ago,5.Mr Black死了三年了。,Mr Black has been dead for three years.,Mr Black died three years ago.,6.小名参军半年了。,Xiao Ming has been a soldier for half a year.,Xiao Ming joined the army half a year ago.,7.我们上了8年学了。,We have been students for eight years,当有一个表示过去某时的状语时，不能用现在完成时，而多用一般过去时。 I saw Mary an hour ago. She lost her handbag yesterday .,Next,现在完成时与一般过去时的区别,现在完成时强调动作或事情发生在过去，一直延续到现在，而且还有可能继续延续下去；而一般过去时只表示发生在过去的动作或事情。 I have taught this class for ten years. （还在教） I taught this class for two years. （曾教过两年，现在不教了）,1. Where _ you _, John? Im looking for you everywhere. A. have; been B. have ;been to C. have; gone D. did; go to 2. How long _ your father _ Shanghai? A. did; come B. has; go to C. has; been to D. has; been in,选 择,A. have; been,D. has; been in,3. I _ my watch in my bedroom yesterday. A. left B. forgot C. have forgotten D. have left 4. She has worked in the factory _. A.since three years ago B. for 1999 C. since in 1999 D. since three years,A. left,A.since three years ago,When did Yao Ming start playing basketball?,How long has Yao Ming been playing basketball?,Yao Mings sports life,成龙（ Jackie Chan ） 1954:be born 1961now: act,He has been acting for 44 years.,How long has Jackie Chan been acting?,He has been acting since he was 7 years old.,He has been acting since 1961.,时间状语: 1. for +一段时间 2. since +过去的时间点 3. since +一般过去时的句子,表示动作从过去某一时间开始一直延续到现在或离现在不远的时间。其动作是否继续下去，由上下文而定。这个时态多用于延续性动词。,现在完成进行时,构成： have / has been + V.ing +,1997,2005,started playing table tennis,stopped playing,1989,2005,has been playing basketball,started playing basketball,Deng Yaping played table tennis for 19 years.,Yao Ming has been playing basketball for 16 years.,played table tennis,Exercises,( )1.Youve never seen such a wonderful film before, _? A. havent you B. have you C. do you D. dont you ( ) 2. I have watched the game. When _ you _ it? A. have; watched B. do; watch C. did ;watch D. will; watch ( )3. Mr. Green _ in China since five years ago. A. lived B. has lived C. lives D. is going to live ( )4. His grandma _ for two years. A. died B. has died C. was dead D. has been dead,B,C,B,D,( )5. Where is Han Mei now? She _ to Shanghai. She will be back in two days. A. has gone B. has been C. goes D. had gone ( )6. _ you _to the United Stated ? No, never,but I went to Canada a few years ago Have; been B. Have; gone C. Did; go D. Do; go ( ) 7.You havent changed your mind,_? do you B. are you C. have you D. did you ( ) 8. How long have you _ the football team of the school? A. played B. been at C. joined D been on,A,A,C,D,( )9. Where have you _ these days? I have _ to Kunming with my friends. A been , gone B been , been C gone , been D gone, gone ( )10. How long have you _ this book? A. bought B. borrowed C. had D. lent ( )11. Excuse me, _ you seen the film yet? Yes, I _ it last night. A have, see B have, have seen C have, seen D have, saw ( )12. He has never ridden a horse before,_? A. is he B. isnt he C. hasnt he D. has he,B,C,D,D,（ ）13. How long have you _ the football team of the school? A been on B been at C joined D played （ ）14. -Where have you _ these days? - I have _ to Dazhu with my friends. A been , gone B been , been C gone , been D gone, gone （ ）14. How long have you _ this book? A bought B borrowed C had D lent （ ）15. Excuse me, _ you seen the film yet? - Yes, I _ it last night. A have, see B have, have seen C have, seen D have, saw （ ）16. He has never ridden a horse before,_? A is he B isnt C hasnt D has he,A,B,C,D,D,四、划线提问 1) I have been there for two days. _ you _ ? 2) My father has lived here since 2000. _ your father _? 3) He left here yesterday. _ he _ 4) They bought a book two hours ago.? _ they _ a book?,How long have,been there,How long has,live here,When did,leave here,When did,bu