How long have you been collecting shells 八年级下册PPT.ppt

Section A Period 1 Liu Xinlan April 21st,2008 shell collect shells 收集贝壳 Marathon 马拉松 skate a pair of skates She is skating. She is a skater. 溜冰者 n.溜冰鞋 v.溜冰/滑冰 What is he doing? He is flying a kite. kite stamp 集邮 collect stamps Yao Ming’s sports life 1980 was born 1989 started playing basketball has been playing 22 years He started playing basketball in 1989. He has been playing basketball since 1989. He has been playing basketball for 22 years. 2011 plays 成龙（ Jackie Chan ） 1954:be born 1961~now: act He has been acting for 52years. How long has Jackie Chan been acting? He has been acting since he was 6 years old. He has been acting since 1961. Miss Li 1975: be born 2001~2013:teach Chinese How long has Miss Li been teaching Chinese? She has been teaching Chinese for 12years. She has been teaching Chinese since 2001. She has been teaching Chinese since 12 years ago. Wang Lei 1990 : be born 1999~now: learn English How long has Wang Lei been learning English? She has been learning English since 1999. She has been learning English for 14 years. She has been learning English since she was nine. She has been learning English since 1 4 years ago. I have been skating for five hours. 时态－现在完成进行时 have / has是助动词 been是be的过去分词 当我们谈论动作从过去某一时间开始一直延续到现在, 并且有可能持续下去时. （一） 构成形式： have / has been + Ving 我们常常用以下句型来表示: for +一段时间 have / has been + doing sth + since +过去的时间点 since + 从句 (一般过去时) eg. How long have you been swimming? I have been swimming for 3 years. How long has she been skating? She has been skating since nine o’clock. 现在完成进行时 例句 1 我已经学了５年的英语了． I have been learning English for 5 years. 例句 2 他已经集邮10年了． He has been collecting stamps for 10 years. He has been collecting … since 10 years ago. He has been collecting … since 1995. 画线部分提问： How long has he been collecting stamps? （二） 引导时间的介