Lesson 21 Mad or not?（课件）新概念英语第二册

Lesson 21 Mad or not? Learning objectives 学习目标 1.Be able to read, understand the lesson. 2.Try to retell and recite the lesson. Pre-reading Who is mad? Why is he/she mad? Listening comprehension (books closed) B B ( )1.Where does the writer live? A. On a plane. B. Near an airport. C. On an airfield. ( )2. What drove away the people? A. air pollution B. noise pollution C. water pollution ii. Reading comprehension It was built years ago, and it came into use last year. Over a hundred people must have left. The writer decided to stay there instead of moving away. 1. When was the airport built and when did the airport come into use? _______________________________________________ 2. How many people must have left? _______________________________________ 3. Why do people think the writer is mad? ___________________________________________________ Previewing check Can you read these new words ? mad reason sum determined 发疯的 原因 量；一笔（金额） 坚定的；下决心的 offer 提供 1. mad adj.发疯的；疯狂的；生气的 be mad/crazy about:为……而疯狂 be mad at sb eg:Don't be mad at him。 别怪他（不关他的事）。 go+adj:变得 go mad/crazy Don't fight with him, he is a mad man. 别跟他打架, 他是疯子。 2.sum 名词 n. [C] 1.总数,总和,总计 [the sum of] She paid the sum of $200 for dresses. 她买衣服总共花了二百元钱。 2.金额;一笔 [+of] He earned a large sum of money. 他赚了一大笔钱。 3.算术题;运算 The boy is good at doing a sum in his head. 这男孩善于心算。 summary 概要，摘要 mad adj.发疯的；疯狂的；生气的 drive sb. mad 把某人逼疯 e.g. 过多的作业快把我逼疯了。____________________________________ Too much homework almost drove me crazy. ☆sum n.量 大量：a great many/a great number of+可数名词复数 a sum of:一笔 a large sum of:大量的，常跟钱连用 a large sum of money a large amount of:许多 plenty of（注意：前面没有a）足够的 3.reason /'ri:zən/ n.原因 for this reason:由于这个原因 for no reason无缘无故 For what reason? 是为了什麽原因？ bring sb. to reason 使某人讲理 reason /'ri:zən/ n.原因 1.n.道理，原因 They departed for no reason. 他们无缘无故无缘无故就分手了。 2.v.推理，讲出道理，对某人讲道理 He