人教版八年级英语下册《nit 6 How long have you been collecting shells.Section A》课件_8

1、How long have you been collecting shells?,Unit 6,Discuss the following questions:,Did you last night/yesterday? When did you start? I startedat How long have you ? I havefor,Groupwork,How long have you been doing?,Ive been doing,for+一段时间,since+一个时间点,Yao Ming 1980: be born 1989 2009: play basketball,

2、He started playing basketball in 1989.,He has been playing basketball since 1989.,He has been playing basketball for 20 years.,PAIRWORK,Li Yuchun 1984: be born 1987 2009: sing,How long has she been singing?,When did she start singing?,She started singing in 1987.,She has been singing for 22 years. s

3、ince 1987.,成龙(Jackie Chan) 1954: be born 1961now: act,He has been acting for 49 years.,How long has Jackie Chan been acting?,He has been acting since 1961.,Michael Jackson 1958: be born 1963 2009: singer,How long has Michael Jackson been a singer?,Michael Jackson has been a singer for 45 years.,A: W

4、hats your hobby? B: A: How long have you been ? B: I have been for/since.,Talk about your hobbies,1. How long did you sleep last night? 2. When did you start class today? 3. How long have you been in class today?,I slept for hours last night.,We started class at today.,I have been in class for hours

5、 today.,Questions:,1b Listening,Ive been skating for five hours.,I skated for four hours.,Ive been skating for five hours.,I skated for two hours.,PAIRWORK Ask and answer questions about the people in the picture.,A: How long has Alison been skating? B: Shes been skating for five hours. A: How long

6、did Sam skate? B: He skated for four hours.,2a Listening,1. How long did you skate today? 2. How long have you been skating today? 3. Was this your first skating marathon? 4. Do you skate every day? 5. When did you get your first pair of skates? 6. How long have you been skating?,Questions 1. How lo

7、ng did you skate today? 2. How long have you been skating today? 3. Was this your first skating marathon? 4. Do you skate every day? 5. When did you get your first pair of skates? 6. How long have you been skating?,2b Listening,Answers a. No, I skated in a marathon last year. b. Yes, I do. c. For si

8、x hours. d. Since I was seven years old.,1. Congratulations on winning the skating marathon! Congratulations! 祝贺你！ Congratulations on doing sth. 祝贺你做了某事 2. I skated in a marathon last year. 我在去年的一场马拉松比赛中滑过冰。,Explanation,3. How long did you skate? (一般过去时) How long have you been skating? (现在完成进行时) How

9、 long have you been here? (现在完成时),How long ? 多长时间？(疑问句) e.g. How long have you been waiting? 你已经等了多久？ How long will the meeting last? 会议将持续多长时间？,2c PAIRWORK,A: How long have you been skating?,B: Ive been skating since I was seven years old.,定义：表示某动作从过去开始，一直延续到现在经历了多长时间,常有可能持续下去,常和表示一段时间的状语连用。 此时态包含现

10、在进行时的含义，也包含现在完成时的含义。,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,构成： have/has been + V-ing +,现在完成进行时,注意: for表示时间的持续,后跟时间段。表示一段时间,多与带数词的名词连用,谓语需用延续性动词。 since表示“自从过去某一时间点以来”,后面接时间点,强调动作或状态一直延续到现在,一般用现在完成时或现在完成进行时。since后可接表时间的名词或名词短语,也可接一个时间状语从句。,Ive been studying English for two years. I

11、ve been studying English since two years ago. He has been collecting shells since he was ten.,否定句：主语+have / has+not +doing (现在分词) I havent been writing the letter for two hours. He hasnt been sleeping for 4 hours. 一般疑问句：Have / Has +主语+been +doing (现在分词）? 1. Have you been writing the letter foe two h

12、ours? 2. Has he been sleeping for 4 hours?,现在完成进行时与一般过去时的区别 这两种时态所表示的动作虽然都发 生在过去, 但是现在完成进行时强调的 是动作的持续或进行, 而一般过去时则 只表示过去的动作或状态, 和现在没有 什么联系。例如：,He has been swimming since four oclock. 他从四点起一直在游泳。(现在还在游) He swam at four oclock. 四点钟他在游泳。(不涉及现在是否还在游),How long has she been dancing?,She has been dancing,fo

13、r 3 hours.,since 3 hours ago.,Pairwork,3 hours,45 minutes,How long has she been learning?,She has been learning,for 45 minutes.,since 45 minutes ago.,What is / are doing? How long has / have .been?,Using since /for:,45 minutes,half an hour,2 year,5 years,1 hour,2 hours,一、选择填空 ( )1. Ive been skating

14、_ three hours today. A. about B. forC. since ( )2. Weve been studying English _ two years ago. A. for B. fromC. since,B,C,练习坊,( )3. She started skating _ 9 oclock. A. for B. at C. since ( )4. Sam _ collecting shells for five years. A. isB. started C. has been ( )5. How long have you _ today? A. swim

15、ming B. been swimming C. started swimming,B,C,B,二、用 for或since填空 1. I have been practicing my oral English _ 10:30. 2. Mary has been running _ 15 minutes. 3. Sarah has been sleeping _ 9:00. 4. Dale has been talking on the phone _ 5 minutes.,since,for,since,for,5. Louie has been studying Chinese _ he

16、was 6 years old. 6. I have been watching you _ 10 minutes. 7. Lana has been running _ 15 minutes 8. Tom has been sleeping _ 9:00.,since,for,for,since,9. He has been living here _ 2001. 10. She has been doing her homework _ two hours. 11. I have been watching TV _10 minutes. 12. How long has Mary been a teacher? _ two years ago