所以同學們掌握起來比較困.ppt

現(xiàn)在完成時態(tài)是中考的必考時態(tài)，由于現(xiàn)在完成時態(tài)既涉及到過去，又聯(lián)系到現(xiàn)在，和一般過去時態(tài)，一般現(xiàn)在時態(tài)，現(xiàn)在進行時態(tài)既有聯(lián)系，又有區(qū)別，所以同學們掌握起來比較困難。 現(xiàn)把這種時態(tài)的用法簡單的總結一下，和各位老師共同切磋。,合賢學校,呂新華,1.現(xiàn)在完成時態(tài)表示過去發(fā)生的動作對現(xiàn)在造成的影響或結果 Our teacher has left. We have studied English. I have already finished the homework. He has had his lunch. He has become a doctor. 我們老師已經(jīng)離開了. Our teacher has been away. (F) Our teacher has left.(T),錯誤的認識: (1)必須使用延續(xù)性動詞. (2) 延續(xù)性動詞必須和一段時間連用.,構成,have/has+過去分詞,2.某個動作從過去已經(jīng)開始,一直持續(xù)到現(xiàn)在,還有可能持續(xù)到將來.動作的持續(xù)性要通過一段時間來表示.,一段時間的表達方法有兩種: for: +一段時間 for a year for two weeks for three years,Since 過去的某一時刻, since nine since last week 一般過去時態(tài)的時間狀語從句 since you came since you got home.,注意:for 和since 所引導的時間狀語都表示一段時間.,He has been away since last week.,He has been away since last week.,對劃線部分提問都用How long,結束性動詞不能和表示一段時間的時間狀語連用,但是他可以轉換成相應的延續(xù)性動詞.,1.直接用延續(xù)性動詞 buy have catch(get) a cold have a cold borrowkeep Come/go /becomebe put on- wear,2.轉換成be+名詞 join the army be a soldier Join the Party be a Party member go to school be a student,3轉換成be+形容詞或副詞 diebe dead finish be over beginbe on leavebe away fall sleep be asleep close be closed,4.轉換成 be+介詞短語 go to school be in school join the army be in the army,1.我們買這本書三年了.,We have had the book for three years.,2.他感冒三天了.,He has had a cold for three days.,We bought the book three years ago.,He caught a cold three days ago.,一般過去時態(tài)和現(xiàn)在完成時態(tài)可以構成同意句,3.自從上星期我借的這本書,I have kept the book since last week.,4.我成為一個學生兩年多了.,I have been a student for over two years.,I borrowed the book last week.,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.小名參軍半年了。,Xiao Ming has been a soldier for half a year.,Xiao Ming joined the army half a year ago.,7.我們上了8年學了。,We have been students for eight years.,8.下課10分鐘了,The class has been over for ten minutes.,9.電影開始了一小時了,The film has been on for an hour.,10.門打開半小時了,The door has been open for half an hour.,Exercises,Youve never seen such a wonderful film before, _? A havent you B have you C do you D dont you 2. -Ann has gone to Shanghai. -So _ her parents. 3. I have watched the game. -When _ you _ it? A have watched B do watch C did watch D will watch,4. Mr. Green _ in China since five years ago. A lived B has lived C lives D is going to live 5. His grandma _ for two years. A died B has been dead C was dead D has died,6. 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 7. -_ to the United Stated ? - No, never,but I went to Canada a few years ago,8. You havent changed your mind,_? A do you B are you C have you D did you,9. How long have you _ the football team of the school? A been on B been at C joined D played 10. -Where have you _ these days? - I have _ to Dazhu with my friends. A been , gone B been , been C gone , been D gone, gone 11. How long have you _ this book? A bought B borrowed C had D lent 12. Excuse me, _ you seen the film yet? - Yes, I _ it last nig