Unit 10 Ive had this bike for three years.Section A（ Grammar Focus-4c ）To learn the usage of for and since1.-How long have you had that bike over there?-Ive had it for three years.2.-How long has his son owned the train and railway set?-Hes owned it since his fourth birthday.Learning Aims1. How long have you lived here? Ive lived here for twenty years. 2. Yes, Ive been here since 1976. 3. He has just bought a new house in the city, but ever since he moved in, he has had trouble with cars and their owners.4. We havent seen each other since last week. 5. My parents and I have been in Hong Kong for two days. Read loudly6. How long have you had that bike over there? Ive had it for three years.7. Jeff has had his bike for more than 10 years.8. Yes, Ive had it for seven years.9. Amy has had her favorite book for three years.10. Amy has had the toy bear since she was a baby.Read loudly11. Amys mom has had the old bread maker for more than ten years.12. Ive had this magazine for a couple of months.13. Ive had them since I was a child.14. My moms had it for a long time but it still works.15. Although he has not played with his old toys for a long time, he still wanted to keep them.Read loudly16. For example, he has owned a train and railway set since his fourth birthday, and he played with it almost every week until he was about seven.17. As for me, I did not want to give up my football shirts, but, to be honest, I have not played for a while now. Read loudlyFill in the blanks.1. How long have you lived here? Ive lived here _ twenty years. 2. Yes, Ive been here _ 1976.3. He has just bought a new house in the city, but ever _ he moved in, he has had trouble with cars and their owners.4. We havent seen each other _ last week. 5. My parents and I have been in Hong Kong _ two days. forsincesincesinceforHave a try!6. How long have you had that bike over there? Ive had it _ three years.7. Jeff has had his bike _ more than 10 years.8. Yes, Ive had it _ seven years.9. Amy has had her favorite book _three years.10. Amy has had the toy bear _ she was a baby.forforforforsinceHave a try!11. Amys mom has had the old bread maker _ more than ten years.12. Ive had this magazine _ a couple of months.13. Ive had them _ I was a child.14. My moms had it _ a long time but it still works.15. Although he has not played with his old toys _ a long time, he still wanted to keep them.forforsinceforforHave a try!16. For example, he has owned a train and railway set _ his fourth birthday, and he played with it almost every week until he was about seven.17. As for me, I did not want to give up my football shirts, but, to be honest, I have not played _ a while now. sinceforHave a try!根据上面句子分组归纳总结现在根据上面句子分组归纳总结现在完成时的用法。完成时的用法。Group work1. 现在完成时表示发生在过去的动作或存在的状态对现在造成的影响或结果*常和for, since引导的时间状语连用，谓语动词多用延续性动词*延续性动词:live, teach, learn, work, study, be open, be closed, keep, have, be away, be married, be asleep, be ill等现在完成时GrammarI have worked here since 2002.自从2002年以来我就在这儿工作。They have learned English for three years.他们学英语3年了。 注意：1）since + 点时间， for + 段时间e.g.: since last week, for two daysGrammar2. 短暂性动词(come, go, leave, buy )可以用于现在完成时。但不能跟for或 since引导的时间状语连用He has not left Beijing yet. Grammar3.某些短暂性动词可以变为以下形式，与since或for引导的时间状语连用，如：buy have / has hadborrow have / has keptarrive have / has been in / atleave have / has been awayopen have / has been openjoin have / has been in have / has been a member ofGrammardie have / has been deadmarry have / has been marriedcome / go have / has been in / atbegin / start have / has been onfinish / stop have / has been overfall asleep have / has been asleepGrammar Rewrite the sentences using for or since. 1. Jim is in Japan. He arrived there three days ago. Jim has been in Japan for three days.2. They are very hungry. Their last meal was ten hours ago. They have not eaten for ten hours. They have been very hungry for ten hours. (Although their last meal was ten hours ago, it isnt logical that they got hungry immediately after they had their last meal.)4a3. I have a camera. I bought it in 2009. I have had a camera since 2009.4. I know Anna. I first met her three years ago. I have known Anna for three years.5. Linda is ill. She became ill on Monday. Linda has been ill since Monday.Fill in the blanks with the correct forms of the verbs in brackets. 1. I _ (never be) to the water park before. I want to _ (go) next month before the weather gets too cold.2. They _ (never own) any pets, but they _ (always want) to have a dog.have never beengohave never ownedhave always wanted4b3. We _ (have) a piano since last November. We _ (buy) it from the Li family when they moved to the US last year.4. Cathy and Amy _ (not be) back to their hometown for two years. They _ (miss) their hometown a lot and hope to visit the place next year.5. This museum _ (be) here for over 20 years. It _ (be) one of the oldest buildings in this small town.have hadboughthave not been/havent beenmisshas beenisFill in the questions and ask two students. Then c