人教版九年级Unit 13 We're trying to save the earth!-Section A 2a—2d-教案、教学设计-公开课-(配套课件编号：702e5).doc

1、教学准备 1. 教学目标 (一) 知识与技能 1. To learn the following words and expressions.bottom, coal, public, ugly, cost, advantage, method, cruel, harmful, afford. 2. To understand the passage on Page 99. (二) 过程和方法 3. To get a general knowledge of pollution by reading and role-play. 4. To know about how to reduce p

2、ollution through discussion. (三) 情感态度和价值观 5. After learning this part, every student will be aware of the serious situation of pollution and determined to take action to protect our earth from now on. 2. 教学重点/难点 一、 教学重点 1. How to use the following words and expressions: cost, advantage, harmful, aff

3、ord, used to, play a part in 2. to understand the passage on Page 99. 二、 教学难点 1. How to use the following words and expressions: cost, advantage, harmful, afford, used to, play a part in 2. to understand the passage on Page 99. 3. 教学用具 4. 标签 教学过程 1、课堂导入 Step 1 Lead-in 1) Show some pictures about pol

4、lution and ask students to discuss what s the danger of each kind of pollution. 2) Here are some words are related to different kinds of pollution. Write them in the box below, and you can add more words. loud music, littering, building houses, cars,ships, mobile phones, rubbish, factories, planes,

5、smoking. 3) 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 river is full of rubbish.来 源:学*科*网 B: But it used to be so clean. A: Yes, but people are littering in the river. B: Everyone in the town

6、 should play a part in cleaning it up. 2、课堂讲授 Step 2. Reading 1) Fast-reading Now turn to page 99 and read the page quickly to find answers to the sheet. 2) careful-reading Read the passage again and fill in blanks. so,although, if but, when Many people do not realize they are killing a whole shark

7、_ they enjoy a bowl of sharks fin soup. Sharks are at the top of the food chain,_ if their numbers drop, the oceans ecosystem will be in danger. Many think that sharks are too strong to be endangered, _ they are wrong. _ there are no scientifiic studies to support this, a lot of people believe that

8、sharks fins are good for health. Sharks may disappear one day _ we do not do something to stop the sale of sharks fins. Possible answers:when, so, but, although, if 3) 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

9、4 倍。Its going to cost me over $100,000 to buy new 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；

10、提供；给予 We couldnt afford to buy a new car. 我们买不起新的车。 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

11、中起着很大作用。 He played a part in his favorite TV show. 他在他最喜欢的电视节目中扮演了一个角色。 课堂小结 Step 5. Summarize Look back on what we have learned. 1. How to protect environment. 2. Useful languages : be harmful to, at the top of, at the bottom of. Solve problems 2、作业布置 Homework : make a conversation with your partner about what you can do to reduce pollution. 课后习题 Step 3 Exercises Translate the following phrases: 1. 对有害 2. 买得起. 3. 在中起作用 4. 过去常常 5. 解决问题 6. 起作用 7. 听说 8. 在顶部 9. 在底部 10. 切下，割下 Step 4 Activities In your group make a list of things people can do to help the environment. 板书