人教新目标 (Go for it) 版九年级全册Unit 13 We’re trying to save the earth!Section A获奖课件ppt

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Unit 13 We’re trying to save the earth!SectionA3a-3b导学案学生姓名 班级 序号 课题内容Unit 13 We’re trying to save the earth!SectionA(3a-3b)学习目标与核心素养1.To learn some words and phrases.shark, fin, cruel, harmful, chain, ecosystem, industry, law, scientific, be harmful to, at the top of, the food chain2.To read a passage about sharks and understand the importance of protecting wild animals. 3.To review conjunctions.4.通过学习3a部分的文章，了解鲨鱼的生存现状，树立保护濒危动植物的意识。学习重点掌握重点单词句句型。学习难点了解鲨鱼的生存现状，树立保护濒危动植物的意识。              课前完成并小组核对答案。一. 根据中文意思写出下列重点单词。1. 鲨鱼n. ____              2. (鱼) 鳍n. ____   3. 科学上的；科学的adj. ____4. 残酷的；残忍的adj. ____   5. 有害的adj. ____  6. 链子；链条n. ____  7. 生态系统n. ____          8. 工业；行业n. ____ 9. 法律；法规n. ____ 二. 认真阅读课文，找出下列重点短语。10. 鱼翅汤 _________                   11. 处于食物链的顶端 _________ 12. 在过去的20到30年间 _________     13. 环境保护组织 ________ 14. 健全法律 _________                 15. 鱼翅买卖 _________ 三. 用以上重点短语完成下列句子。16. 但是你意识到当你每次在品尝一碗鱼翅汤时，你正在杀死一整头鲨鱼吗？But do you realize that you're killing a whole shark each time you enjoy ____ ____ ____ ____ ____ ____ ?17. 在过去的20到30年里，有些种类的鲨鱼的数量已经下降了百分之九十多。The numbers of some kinds of sharks have fallen by over 90 percent ____ ____ ____ 20 to 30 years.18. 如果我们不采取措施来阻止这种鱼翅买卖，鲨鱼可能有一天会消失。Sharks may disappear one day if we do not do something to ____ ____ ____ ____ ____ ____.探究一： 篇章理解 1.Prediction    1)What can you see in the picture?2)What’s the main idea of the article? A. Some kinds of fish in the ocean B.The sharks are endangered in the world. C.Shark’s fin soup is famous and expensive.Fast Reading:1)Finish 3a2)Read the passage quickly. What is the main idea of each paragraph?Please underline the key phrases or sentences.Para.1Para.2Para.33.Detail Reading Read Para 1 and finish the following tasks.Questions:1. What is shark's fin soup made of?  2. What do you know about this dish?3. Where is shark fin soup popular?  4. Why we shouldn't enjoy it? Read Para 2 and finish the following tasks.Decide “T” or “F”1. People cut off sharks’ fins and throw the sharks back into the ocean.2. Sharks are the strongest in their food chain, so they can never be endangered.3. If their numbers drop too low, it will bring danger to all ocean life.4. The number of sharks have fallen by over 90 percent in the last 20 to 30 years. Finish the mind map.Questions:1. Why are sharks endangered now? 2.How do people get shark fins? 3. What will happen if sharks don't have their fins? 4. How does this do harm to the environment? Read Para3 and finish the following tasks.Questions:1.What are the names of the two environmental protection groups ? 2.What have people done against(反对）finning？ 3. Do you think the shark fin soup is good for health? 4:After reading: Some people like to eat shark fin soup, especially in 1__________ China. Many people don’t 2________ they are 3_______ a whole shark when they enjoy a bowl of shark fin soup.       But getting the shark fin is very 4_________. When people catch sharks, they 5__________their fins and 6 _______ the sharks 7 _______ into the ocean. The sharks slowly 8 ______ because they can’t 9________ without fins. And it is also 10________ to the environment. Sharks are at the 11______ of the food chain. If the numbers of sharks 12_____ too low, it will 13_____ the balance of the nature. Environmental protection groups have asked governments to 14_______ to stop the sale of the shark fins. Please say no to eating shark fin soup, and take actions to 15_____ the sharks!   探究二： 知识点解读A shark can no longer swim and slowly dies. 鲨鱼不能再游泳然后慢慢死掉。【解读】no longer意思是“不再”有两个短语和no longer同义，即not…any longer和not…any more，但他们侧重的方面不同。no longer和not…any longer侧重时间。 e.g. He no longer lives here. = He doesn’t live here any longer.        他不在这儿居住了。(一个时间以前他住在这儿，过了这个时间，他就离开了。) not…any more侧重程度和数量e.g. You can drink no more. = You can’t drink any more. 你不能再喝了。(喝酒的量到了一定程度，不能再继续下去了。) 2. This method is not only cruel, but also harmful to the environment.    这种方法不但残忍而且对环境有害。not only…but also…用于连接两个表示并列关系的成分，着重强调后者，其意为“不仅……而且……”; 其中的also有时可以省略。e.g. She not only plays well, but also writes music.她不但很会演奏，而且还会作曲。若连接两个成分作主语，其谓语通常与靠近的主语保持一致。e.g. Not only you but also he has to leave. 不只是你，他也得离开。not only放在句首，后接句子时要用倒装结构。 e.g. Not only had the poor man been fined, but also he had been sent to prison.这个可怜的人不仅被罚款，而且还被 送进了监狱。 3. Sharks are at the top of the food chain in  the ocean’s ecosystem.               鲨鱼位于海洋生物系统食物链的顶部。at the top of   在......的顶部at the top of 还可表示“(速度, 声音等) 达到极限；（地位、名次）达到最高。e.g. She ran at the top of her speed.她以自己最快的速度跑。4. If their numbers drop too low, it will bring danger to all ocean life.     如果它们的数目降至过低，会给所有海洋生物带来危险。    此句复数形式的numbers表达全海洋中各种鲨鱼的总量。当表示数值的高或低时，number要用high或low修饰。e.g. In that country, the number of children going to school is higher in cities than in towns and village.在那个国家，城市儿童入学人数比乡镇 及农村要高。常与number搭配的动词有grow, fall等。e.g. The number of families that own cars has been growing quickly recently.       近来拥有轿车的家庭数量增长很快。