Lesson 21 Mad or not？.

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1 Lesson 21 Mad or not？

2 new words 1. mad adj. mentally insane/ ill in one’s mind 发疯的
go mad/ be mad 发疯，失去理智 同义短语：go bananas drive sb. mad 把某人逼疯 be mad about为…而疯狂的 madhouse/funny farm 疯人院 adj. 生气的 be mad with/at sb. = be angry with sb.

3 2. reason n. 理由 reason for sth./ to do sth/ why加句子 那就是为什么我会迟到的原因。 That’s the reason for my lateness/to be late/why I am late. reasonable adj. 合理的

4 3. sum n. 量 a large sum of money    一大笔钱 v. 概括，总结 to sum up 总而言之

5 4. determined adj. 坚定的，下定决心的
be determined to do sth. 下定决心做某事 同义短语： decide to do sth/ make up one’s mind to do sth/ make a decision to do sth a man of determination 一个有决断力的人

6 阅读理解 1. Why do people think the writer is mad?
Because the writer has been offered much money to go away, but he is determined to stay here. 2. What must have been the reason why so many people left their homes? They must have been driven away from their homes by the noise.

7 1. Aeroplanes are slowly driving me mad.
他正在逐渐制定一个合理的计划。 He is slowly making a reasonable plan. ●drive 的各种含义： 1.Aeroplanes are slowly driving me mad. 逼迫 2. He drives his car very badly. 驾驶 3. The farmer drove the cattle into the field. 驱使 4.During the war,many people were driven out of their home. 赶出

8 2. I live near an airport and passing planes can be heard night and day.
着火的森林 the burning forest 发展中国家 a developing country ●night and day：日日夜夜，夜以继日 ●被动语态与情态动词连用（详见重点语法）

9 3. The airport was built years ago, but for some reason it could not be used then.
●复习过去时的被动语态 ●years 前面不加确定的数词时，一般表示 “许多年” 数周前 weeks ago ●some 某个，某种 for some reason 由于某种原因 e.g 某人在门外等你。 Some person is waiting outside the door.

10 4. Last year, however, it came into use.
然后，这并未发生。 However, this does not happen./ This, however, does not happen. ●come into use：“启用”、“开始被使用” ，不用于被动语态

11 5. Over a hundred people must have been driven away from their homes by the noise.
●must have been done：情态动词与被动语态连用 ●must+完成时态表示对过去某事的推测 这枝钢笔是约翰的。他一定来过这里。 This pen is John's. He must have been here. ●home “家”、“家庭”，带有感情色彩； house “房屋”、“住宅”，无感情色彩 选词填空：He has a large house but doesn’t have a sweet home. house + family= home

12 6. I am one of the few people left.
●left: 相当于定语从句who are left：“被留下 来的” “剩下的” 模仿：这是唯一被报道的新闻。 This is the only news reported.

13 7. Sometimes I think this house will be knocked down by a passing plane.
●knock down：撞倒 复习knock其他短语搭配： knock at 敲 knock off 打折 knock over 碰翻，打到 knock out 打晕

14 8. I have been offered a large sum of money to go away, but I’m determined to stay here. Everybody says I must be mad and they are probably right. ●offer v. 提供 同义词：give/provide 双宾语的被动语态: I have been offered a large sum of money. = A large sum of money has been offered to me.

15 ●复习情态动词must的用法：must be表肯定的推 测
她肯定40了，有那么大的女儿。 She must be 40, for she has a daughter at that age. 表示对现在的肯定猜测：must be 表示对过去的肯定猜测：must have been

16 grammar 被动语态复习及情态动词被动语态构成 EX 请在本课文中找到所有实意动词的被动语 态形式并说出其对应时态：
was built/will be knocked down/have been offered 关于8大时态的被动语态形式参见L10语法重点 表格

17 .含有情态动词的被动语态 含有情态动词的主动句变成被动句时， 由“情态动词＋be＋done”构成。 改被动：  We can repair this watch in two days. This watch can be repaired in two days.  They should do it at once. It should be done at once.

18 EX用所给动词的适当时态和语态填空。 1.Children are not allowed (not allow) to play frightening games. 2.All the buildings have been turned (turn) into hospitals since last July. 3.The vegetables will be planted (plant) in the fields next week. 4. The password of your box should be memorized (memorize记得). 5. Liquids can be turned (turn) into gases if their temperatures are made (make) hot enough. 6. The next morning they found that some trees had been blown (blow吹) down during the night.

19 EX按要求改写句子。（改为被动语态） 1. The headmaster praised Ben for his honesty. Ben is praised by the headmaster for his honesty. 2. The firemen are using long ladders for rescuing people in tall buildings. Long ladders are being used for rescuing people in tall building by the firemen.

20 3.Some old Chinese can understand Russian.
Russian can be understood by some old Chinese. 4. The Spring Festival is welcomed by the Chinese all over the world. (改为主动语态) The Chinese all over the world welcome the Spring Festival.

21 Thank you ！