修改unit6SectinA1a-2c语法李侠勤.ppt

Unit 6 How long have you been collecting shells? sectionA 1a-2c,Li Xiaqin,学习目标：,1.利用师生对话，复习一般过去时。 2.对比for与since ,思考二者区别 3.专题训练：学习现在完成进行时。,观察例句，结合资料书，试概况for与since 的区别： Ive been studying English for six years. Ive been studying English since six years ago. Ive been studying English since I was ten.,How long has she been playing computer?,(four hours),She has been playing computer,= since four hours ago.,Using since /for：（利用since/for 看图造句）,for four hours.,How long has she been dancing?,She has been dancing,for 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.,1._? He took a shower for two hours. 2._? I have been riding a bike since I was ten years old. 3._? She started walking five hours ago. 4._? Theyve been watching Tv since 7:00. 5._? He likes skating.,对划线部分提问？,How long did he take a shower,How long have you been riding a bike,When did she start walking,How long have they been watching Tv,Whats his hobby,用for和since填空,They have been learning Chinese _ they came to China. 2. I havent seen her _ a long time. 3. He has been living here _ 2001. 4. She has been doing her homework _ two hours. 5. Its 5 years _ we left school. 6. How long has Mary been a teacher? _ two years ago. 7.I have been practicing the piano _ 10:30.,Have a try,since,for,since,for,since,since,since,I have been teaching English for 8 years.,He has been skating since 2 hours ago.,观察例句，思考上面是什么时态 ，试概况时态的定义、时态的结构 、时态的标志。,Ive been studying English for six years. Ive been studying English since six years ago. Ive been studying English since I was ten.,定义：表示过去某一时间开始一直延续到现在的动作。,时间标志: 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,否定句：在have / has后+ not I havent been writing the letter for two hours. He hasnt been sleeping for 4 hours. 一般疑问句：Have / Has 提前，放句首。 1. Have you been writing the letter foe two hours? 2. Has he been sleeping for 4 hours?,表示的动作虽然都发 生在过去,比较： 1.I watched TV for three hours.,（I stopped watching TV.）,（I am still watching Tv now.）,现在完成进行时与一般过去时的区别,3、He has been swimming since four oclock. 4、He swam at four oclock.,2.I have been watching TV for three hours.,现在完成进行时与一般过去时的区别 相同点： 都表示的动作虽然都发生在过去。 不同点： 现在完成进行时：强调的是动作的持续或进行。 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。,练习坊,一、选择填空,( )1. Ive been skating _ three hours today. A. about B. for C. since,( )2. Weve been studying English _two years ago. A. for B. from C. since,B,C,( )3. She started skating _ 9 oclock. A. for B. at C. since ( )4. Sam _ collecting shells for five years. A. is B. started C. has been ( )5. How long have you _ today? A. swimming 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 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.,since,Since,for,for,III. 将下列汉语翻译成英语。 1. 雨已经下了两个星期了。 _ 2. 你奶奶从年轻时就一直运动吗？ 是的，她一直运动。_ _ _,It has been raining for two weeks.,Has your grandmother been doing sports since she was young? Yes, she has.,Translate and write them down.,1. 他踢足球踢了多长时间了？ 他踢了五个小时了。 2. 你滑