人教版九年级Unit 13 We're trying to save the earth!-Section A 2a—2d-ppt课件-(含教案)-公开课-(编号：f05c7).zip

Warming-upLets watch a video. What did you see in the video? which animal is the strongest in the ocean? ocean ecosystem 生态系统 shark 鲨鱼 the food chains 食物链 shark 鲨鱼 Sharks are at the top of the food chain in the oceans ecosystem.They have lived in the ocean for over 400 million years, even older than the dinosaurs.(恐龙）Sharks have NEVER hurt people on purpose(故意). How much do you know about the sharks? Brainstorm Many people think that sharks are too strong to be endangered, but they are wrong. The sharks are endangered! shark fin shark fin soup鱼翅汤 People catch them to cut off their fins. Discussion Why the sharks are endangered? 鱼翅，就是鲨鱼鳍中的细丝状软骨，形似 粉丝,取材于鲨鱼的背鳍、胸鳍、尾鳍。 鱼翅价格昂贵，在高档酒店，每份鱼翅羹 (shark fin soup )约800-1500元人民币。 鱼翅本身并没有什么味道，烹制时要用许 多调味品给鱼翅赋味。 Do you know how to get the shark fin? Its not only cruel,but also harmful to the environment. 1. What can you see in the picture? 2. What does the passage may talk about? 1. A shark. 2. It may talk about the sharks. Look at the photo, the questions in 3a and the title of the story on page 99. Then answer the questions below. Pre-reading Para. 1 Para. 2 Para. 3 We should help save the sharks. An introduction of shark fin soup. Sharks are endangered because of peoples killing. Read the title, the first and last sentences in each paragraphs and match the main ideas. Reading task1 Many have heard of shark fin soup. This famous and expensive dish is especially popular in southern China. But do you realize that youre killing a whole shark each time you enjoy a bowl of shark fin soup? Reading task3 Read Para. 1 . And answer the question below. shark fin soup 1.What do you know about the shark fin soup? 2.What does it mean when people enjoy a bowl of shark fin soup? A dish be famous be popular in southern China be expensive Theyre killing a whole shark each time they enjoy a bowl of shark fin soup. fact When people catch sharks,they cut off their fins and throw the shark back into the ocean. This is not only cruel ，but also harmful to the environment. Without a fin,a shark can no longer swim and slowly dies. Sharks are at the top of the food chain in the oceans ecosystem. If their numbers drop too low,it will bring danger to all ocean life. Many believe that sharks can never be endangered because they are the strongest in their food chain. But in fact,around 70 million sharks are caught and traded in this industry every year. The numbers of some kinds of sharks have fallen by over 90 percent in the last 20 to 30 years. Reading task4 Read Para. 2 . And finish the task below. People cut off sharks fins and throw the sharks back into the ocean . Sharks will be well without their fins. Sharks are in the bottom of the food chain in the oceans ecosystem. Sharks can never be endangered. The numbers of some kinds of sharks have fallen by over 90 percent in the last 20 to 30 years. Tell true (T) or false (F) T F F F T Why? 1.This is not only cruel, but also harmful to the environment. Find out the two opinions about killing sharks: Without a fin can no longer swim and slowly dies. at the top of the food chain. bring danger to the all ocean life. 2. Many believe that sharks can never be endangered. Why? But in fact, around 70 million were caught and traded in this industry every year. The numbers have fallen by over 90 percent in the last 20 to 30 years. Save the sharks! people cut off their fins and eat shark fin soup. A shark can no longer swim and slowly dies. at the top of the food chain in the oceans ecosystem If sharks numbers drop too low, It will bring danger to all ocean life. Environmental protection groups around the world，such as Wild Aid and the WWF，are teaching the public about “finning”They have even asked governments to develop laws to stop the sale of shark fins. So far，no scientific studies have shown that shark fins are good for health，so why eat them？Help save the sharks！ Reading task4 Read Para.3 . And finish the task below. 1. What are the two environmental protection groups? 美国野生救援会(WildAid) 是1999年在美国注册的非盈 利机构，总部在美国旧金山 ，它对濒临绝迹的野生动物 提供直接的保护，并且发展 许多有创意的计划，以教育 大众关于野生动物及生态平 衡的重要性。 世界自然基金会(WWF)是在全 球享有盛誉的、最大的独立性 非政府环境保护组织之一，自 1961年成立以来，WWF一直致 力于环保事业，在全世界拥有 超过500万支持者和超过100个 国家参与的项目网络。 2. What are they doing 用最高最大的( 速度, 声音等) e.g. I looked at the top of his head, his hair shiny and parted smoothly. 我看他的头顶, 头发光亮, 分得平滑。 He shouted at the top of his voice in order that he might be heard. 他尽力大声叫喊, 以便别人能听见。 4.If their numbers drop too low, it will bring danger to all ocean life. 【解读】 此句复数形式的number表达全海洋中鲨 鱼的总量。当表示数值的高或低时，number要用 high或low修饰常与number搭配的动词：grow, fall 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。 Check if you know these phrases. 1.听说 2.在中国南部地区 3.每当 4.一碗鱼翅汤 5.切掉 6. 不再 7.不仅而且 8.对有害 hear of in southern China each time a bowl of shark fin soup cut off no longer/more not only but also be harmful to Phrases summary 21世纪教育网 Check if you know these phrases. 9.在的顶部 10.食物链 11.实际上，事实上 12. 的数量 13.在过去20到30年里 14.到目前为止 15.海洋生态系统 at the top of the food chain in fact the number of in the last 20 to 30 years. So far the oceans ecosystem 3b Read the passage again and fill in the blanks with the words in the box. so although if but when 1. Many people do not realize they are killing a whole shark _ they enjoy a bowl of shark fin soup. 2. Sharks are at the top of the food chain, _ if their numbers drop, the oceans ecosystem will be in danger. when so 3. Many think that sharks are too strong to be endangered, _ they are wrong. 4. _ there are no scientific studies to support this, a lot of people believe that shark fins are good for health. 5. Sharks may disappear one day _ we do not do something to stop the sale of shark fins. but Although if adj. 科学上的，科学的 21世纪教育网 Retell the passage according to the words below. A whole shark has been killed each time you enjoy a bowl of shark fin soup. When people catch sharks, they _ their fins and throw the shark back into the ocean. Without a fin, a shark can _ swim and slowly dies. If sharks numbers drop too low, it will _ all ocean life. _ some kinds of sharks have fallen _ over 90 percent in the last 20 to 30 years. cut off no longer bring danger to The numbers of by Consolidation Discussion What can we do to save the sharks? It is everyones duty to save the sharks. For the students, we can And we can . We also can . 21世纪教育网 No sale no killing. 没有买卖，就没有杀 害。 Protecting wild animals is just protecting ourselves. 保护野生动物就是保护我们人类自己。 Dont let our children can only see todays animals in the museums. 不要让我们的孩子只能在博物馆里才能 见到今天的动物。 21世纪教育网 Unit13Unit13 WereWere tryingtrying toto savesave thethe earth.earth. 一、教学目标： 1. 语言知识目标 基本词汇：litter, advantage, bottom, fisherman, coal, ugly, cost, wooden, plastic, takeaway, bin, shark, fin, method, cruel. Harmful, chain, ecosystem, industry, law, scientific, afford, reusable, transportation, recycle, napkin, upside, gate, bottle, president, inspiration, iron, work, metal, creativity, 基本词组：be harmful to, at the top(of sth.), take part in, turn off, take action, throw away, put sth. to good use, pull down, bring back 基本句型：Were trying to save the earth! The river used to be so clean. The air is badly polluted. No scientific studies have showed that shark fins are good for health. We should help save the sharks. 2. 技能目标: 能正确运用现在进行时，现在完成时，被动语态，情态动词和 used to 句 型。 3. 情感目标: 有环境危机意识，学会关注环境保护环境。 二、教学重难点： 1. 教学重点：（1）能正确运用现在进行时，现在完成时，被动语态，情态动词和 used to 句型。 （2）保护环境的措施方法。 2. 教学难点：能正确运用现在进行时，现在完成时，被动语态，情态动词和 used to 句 型。 三、教学步骤: Section A 2 (3a-3c) I. Revision (1)Role-play 2d. (2)Translate these sentences into English. 甚至是河底都满是垃圾。 这个小镇上的每个人都应该参加打扫。 骑自行车有其它的优点。 我买外卖食品从来不拿木筷子和塑料叉子。 II. Lead in (1) Teacher tells students the earth is badly polluted. What should we do to save the earth? Lets take action. For example: Turn off the lights when you leave a room; Take buses instead of driving cars Recycle books and paper. (2) There are some animals are endangered. We should do something to protect the animals and the environment! III. Discussion (1) Have you ever seen a shark? (2) What do you know about sharks? IV. Reading (1)Sharks are endangered, read the passage and judge the sentences. Sharks fin（鱼鳍）soup is famous and expensive all around the world. We have to kill a whole shark to get a bowl of sharks fin soup. People cut off sharks fins and throw the sharks back into the ocean. Sharks are in the bottom of the food chain in the oceans ecosystem. WildAid and the WWF are environmental protection groups in China. Sharks fin s are good for health. (2)Complete the fact sheet in 3a. Where shark fin soup is popular Number of sharks caught and traded every year How much the numbers of some kinds of sharks have fallen in the last 20 to 30 years Two environmental groups which are against “finning” V. Practice (3b) (1) Read the passage and dill in the blanks with the words in the box. 1. Many people do not realize they are killing a whole shark _ they enjoy a bowl of shark fin soup. 2. Sharks are at the top of the food chain, _ if their numbers drop, the oceans ecosystem will be in danger. 3. Many think that sharks are too strong to be endangered, _ they are wrong. 4. _ there are no scientific studies to support this, a lot of people believe that shark fins are good for health. 5. Sharks may disappear one day _ we do not do something to stop the sale of shark fins. (2) Retell the passage according to the words below. sharks fin soup, in southern China each time cut off no longer not onlybut also at the top drop be endangered the strongest around 70 million fallen by over 90 percent WildAid and the WWF develop laws scientific studies VI. Language points 1. A shark can no longer swim and slowly dies. 鲨鱼不能再游泳然后慢慢死掉。 no longer 意思是“不再” e.g. Im no longer a student. 我不再是个学生了。 有两个短语和 no longer 同义，即 notany longer 和 notany more，但他们侧重的方 面不同。 no longer 和 notany longer 侧重时间。 e.g. He no longer lives here.= He doesnt 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。) notany more 侧重侧重程度和数量 e.g. You can drink no more. = You cant 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 onlybut 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. 1) She not only plays well, but also writes music. 她不仅很会演奏，而且还会作曲。 2) Not only men but also women were chosen. 不仅仅是男的，女的也有被选中的。 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。 be harmful to 对 有害 e.g. Smoking is harmful to the health. 吸烟有损健康。 Playing computer games much is harmful to students. 电脑游戏玩太多对学生有害。 3. Sharks are at the top of the food chain in the oceans ecosystem. 鲨鱼位于海洋生物系统食物链的顶部。 at the top of 在.最高地位; 用最高最大的(速度, 声音等) e.g. I looked at the top of his head, his hair shiny and parted smoothly. 我看他的头顶, 头发光亮, 分得平滑。 He shouted at the top of his voice in order that he might be heard. 他尽力大声叫喊, 以便别人能听见。 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 number 表达全海洋中鲨鱼的总量。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。 5. Environment protection groups around the world, such as WildAid and the WWF, are teaching the public about “finning”. 世界各地的环境保护组织，如野生救援协会和世界自然基金会，都在教育公众有关“猎翅” 的行为。 1) 句中 fin 本为名词，指 “鱼鳍”。此句中的 finning 由动词化的 fin（割鲨鱼鳍以获 取鱼翅）的-ing 形式转化而成，指课文中所陈述的 “猎翅”这一行为。 2) WildAid 和 WWF 组织 WildAid（美国野生救援协会）是保护野生动物及栖息地环境的一个非盈利性的机构，1999 年注册成立，其宗旨是保护及救助世界范围内的野生动物；WWF（世界自然基金会）英文全 称为 World Wide Fund for Nature，成立于 1961 年，是享有国际盛誉，全球最大的独立 性非政府环境保护组织之一。 VII. Homework Write 5 measures to protect the environment.