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1、Unit 13 Were trying to save the earth 第一课时 (Section A),情境引入 Leading-in,Look at the following pictures,noise pollution,air pollution,water pollution,Role-play the following conversation and make your own conversations about the kinds of pollution above.,A: The river was dirty. Even the bottom of the
2、river is full of rubbish. B: But it used to be so clean. A: Yes, but people are littering in the river. B: Everyone in the town should play a part in cleaning it up.,活动探究,Fast-reading Now turn to page 99 and read the page quickly to find answers to the sheet.,Possible answers: Southern China 70 mill
3、ion over 90 percent WildAid and the WWF,careful-reading Raed the passage again and fill in blanks.Using the following words so, although, if but, when, Many people do not realize they are killing a whole shark _ they enjoy a bowl of sharks fin soup. Sharks are at the top of the food chain, _ if thei
4、r numbers drop, the oceans ecosystem will be in danger.,so,when, Many think that sharks are too strong to be endangered, _ they are wrong. _ there are no scienfitic studies to support this, a lot of people believe that sharks fins are good for health. Sharks may disappear one day _ we do not do some
5、thing to stop the sale of sharks fins.,but,Although,if,延伸拓展,Studying useful words and expressions., cost v价钱为，花费 n.价钱，代价；花费，费用 The cost of a loaf of bread has increased five-fold 一条面包的价钱增长了4倍。 Badges are also available at a cost of 2.50. 徽章也有卖的，2.5英镑一枚。 Its going to cost me over $100,000 to buy new
6、trucks. 买几辆新卡车将花掉我10万多美元。 harmful adj.对有害的；能造成损害的；不利；不良 Smoking is harmful to our health. 吸烟对人类的健康有害。, used to do过去一向，过去时常，过去曾（而现在不再）做 Who used to do your laundry? 谁过去一直为你洗衣服？ She used to wash dishes in a restaurant.她曾经在餐馆里洗过盘子。 afford vt.买得起；担负得起；提供；给予 We couldnt afford to buy a new car. 我们买不起新的车。
7、We cant afford to wait. 我们等不起。 My parents cant even afford a new refrigerator. 我父母甚至买不起一台新冰箱。, play a part in扮演某角色; 与有关，对有影响 Id like to play a part in their discussion. 我愿意参与他们的讨论。 Education is playing a big part in environmental protection. 教育在环境保护中起着很大作用。 He played a part in his favorite TV show.
8、他在他最喜欢的电视节目中扮演了一个角色。,随堂练习,Translate the following phrases: 对有害 买得起 在中起作用 过去常常 解决问题 起作用 听说 在顶部 在底部 切下，割下,Be harmful to Afford sth Play a part in Used to do Solve problems Make a difference At the top of At the bottom of Cut off,小结与作业,1. Look back on what we have learned in this lesson. 2. Homework: make a conversation with your parnter about what you can do to reduce pollution.,
