- 人教2011课标版_八年级下册(2013年10月第1版)_初中英语_Unit 10 I ve had this bike for three years._Section A Grammar focus 4a—4c_ppt课件_(含教案+素材)_省级优课_(编号:3082b)
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Unit 10 Ive had this bike for three years. 学习目标学习目标 知识目标: 掌握现在完成时的用法 能力目标: 1.能听懂谈论人们拥有某物多长时间的话题,能熟练运用 since, for 谈论自己的 个人物品。 2. 正确运用 for 和 since 的用法 情感目标: 正确运用现在完成时 教学过程教学过程 Step 1 精讲点拨精讲点拨 现在完成时 现在完成时的持续型用法 现在完成时还可表示过去某一时间开始并一直持续到现在(包括“现在”在内)的动 作或状态,该用法中的动词多是延续性动词,常见的时态标志词有 since, for 等。 1. since 意为“自从以来”, 它既可作介词,也可作连词。作介词时, 后接表示 过去的时间点, 表示某事开始的时间;作连词时, 引导时间状语从句, 从句常 用一般过去时。如: We have been here since last Sunday / two years ago. Mr. Jones has worked here since he was twenty-five. 2. for 作介词,后接一段时间,表示一个动作或一种状态已经持续了多长时间。 如: I have studied here for three years. She has been away for five days. 注意: 1. 对 since 和 for 引导的时间状语提问时, 常用 how long。如: Jane has learned to play the piano since two years ago. (对划线部分提问) How long has Jane learned to play the piano? 2. 在现在完成时中,含有 for 和 since 的句子可以相互转换。如: They have lived here for five years. =They have lived here since five years ago. 3. 在现在完成时中,表示短暂意义的动词(如 come 和 see)在肯定句和一般疑问 句中不能和表示一段时间的时间状语连用,但在否定句中是可以的。如: Mike has come to London for three weeks. () They havent seen each other for ages. () 短暂性(短语)动词与延续性(短语)动词 和与表示状态的短语之间的转化 1. 有些短暂性(短语)动词可转化为相应的延续性(短语)动词。常见的有: become be borrow keep buy have / own catch a cold have a cold come stay put on wear go to sleep sleep move to live in 2. 有些短暂性(短语)动词可转化为表示状态的短语。常见的有: leave be away begin / start be on die be dead finish be over join be in / be a member of fall asleep be asleep marry be married come / arrive here be here Step 2 Work on 4a Rewrite the sentences using for or since 1. Jim is in Japan. He arrived there three years ago. Jim has been in Japan for three years. 2. They are very hungry. Their last meal was ten hours ago. They have been hungry for ten hours/since ten hours ago. 3. I have a camera. I bought it in 2009. I have had a camera since 2009. 4. I know Ann. I first met her three years ago. I have known Ann for three years/since three years ago. 5. Linda is ill. She became ill on Monday. Linda has been ill since Monday. Step3 Work on 4b Fill in the blanks with 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. 3. 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. Step4 Group work 4c Fill in the questions and ask two students. Then complete the chart. 1. Do you have a(n) _? How long have you had it? 2. Do you own a(n)_? How long have you owned it? ThingsHow long Tonyfavorite book basketball for two years since he was 10years old Student 1 Student 2 Step 5 Homework 1. Review Grammar. 2. Finish the exercises in the workbook.
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