人教版高中英语选修六第四单元课件.doc

T同步-U4基础知识梳理 （建议2-5分钟） Q1: Have you ever seen the film The Day After Tomorrow? Q2:What kind of disasters have you seen in the film? Q3：What have you learnt from the movie? Global Warming What other disasters will be caused by global warming? 批注：上面图片中一部分为电影截图，可以由电影激发学生兴趣，通过问题引出话题-global warming，时间允许的话可以讨论原因，危害等，最后切入主题。 （建议20-25分钟） 让我们先扫开单词障碍吧！ 一、词汇Words 1. consume vt. 消耗；消费；耗尽；吃完 consumer(n)=customer/buyer e.g. 1.Before he died he had consumed a large quantity of alcohol. 2. The hotel was quickly consumed by fire. 3. Arguing about details consumed many hours of our valuable time. 4. She consumed most of her time in reading. [牛刀小试]： 1. 他的旧汽车耗油很多。 His old car ________ much gasoline. 2. 每年美国人都消耗掉世界能源的很大比例 Each year Americans _________________. 解析：consumed/consumes; consume a high percentage of the worlds energy. 批注：掌握consume的基本意义及用法即可。 2. come about 产生；发生；造成 e.g. 1. How did the accident come about? 2. I didn’t know how the mistake had come about. 句型 How does it come about that...?怎么会发生……这样的事呢？ e.g. How does it come about that he is so badly off when he earns quite a good salary. 【知识拓展】 come to 到达；谈到；突然想起；苏醒 come out 出来；出版；(花)开 come into being (开始)出现；产生 come across 偶然遇到或发现；被理解 come up 长出；走上来；被提出 come true (梦想、愿望)实现 批注：come about是不及物动词短语，不能接宾语，也没有被动语态； 注意come的短语记忆与积累。 1.这一切是如何发生的？ How did all this___________? 2.他是怎么知道我们在什么地方的呢？ _____________________ that he knew where we were? 3. Please tell me how the accident ___. I am still in the dark. A. came by B. came out C. came to D. came about 4.花刚开始长出地面。 The flowers are just beginning to ____________. 5.今天早上我在牛津大街偶然碰见一位老校友。 I ____________ an old schoolmate in Oxford Street this morning. 6.他的新书明年会出版。 His new book will next year. 解析：come about; How did it come about; D; come up; came across; come out 3. random adj. 胡乱的；任意的 e.g. 1.The information is processed in a random order. 2. Most people know that the outcome of a coin toss is random 【知识拓展】 be at random 随意地；任意地；随便地 e.g. 1. She opened the bo