过去时和现在时的区别.pptx

一般过去时和现在完成时的区别;He -------- (am) born 500 years ago.;She -------(win) the gold medal in 2008 Olympic Games.;He -------- (am) born 500 years ago.;用法：;3.一般过去时的形式有时并不表示过去的动作而是只表示说话人的委婉语气。;He was born 500 years ago. She won the gold medal in 2008 Olympic Games.;动词过去式不规则变化;一般过去时;1. He (work) in that bank four years ago. 2. I (see) him yesterday. 3. I (buy) a coat just now. 4. My mother (be) a worker 20 years ago. 5. Why did your brother (cry) last night?;I -----------------(come) to Hangzhou before.;I ---------------------- （learn) English for 10 years. ;I -----------------(come) to Hangzhou before.;用法：;2.现在完成时强调动作是从过去持续到现在,并有可能继续下去. 常用的时间状语：for, ever, before, already, yet, just, since, recently, in the past few years等;基本结构：;现在完成时;课堂练习题：;Part3 两种时态的区分;2.过去时常与具体的时间状语连用，而现在完成时通常与模糊的时间状语连用，或无时间状语。;3.现在完成时可表示持续到现在的动作或状态，动词一般是延续性的，如live, teach, learn, work, study, know. 过去时常用的非持续性动词有come, go, leave, start, die, finish, become, get married等。;课堂练习题：;课外作业;II. 单项填空。 1. —I’m sorry, Cathy, I ______ your radio for such a long time. —Never mind. A. have borrowed B. have lent C. have kept D. have returned 2. —Where have you ______ these days? —I have ______ to Yangzhou with my friends. A. been, gone B. been, been C. gone, been D. gone, gone 3. —Where is your father? We haven’t seen each other for weeks. —______. A. He has been to America B. He has gone to England C. He is going to Australia D. He would visit my grandparents;4. They have ______ since the factory opened. A. left the school B. joined the team C. become workers D. worked here 5. Jim ______ the Great Wall many times. A. went to B. goes to C. has gone to D. has been to 6. It ______ ten years since they ______ to France. A. was, moved B. was, have moved C. is, have moved D. is, moved 7. —______ to the United States? —No, never, but I went to Canada