Unit 13 We are trying to save the earth. (Section A 3a-3b)课件2025-2026学年人教版（2012）英语九年级全册

Unit 13 We are trying to save the earth. (Section A 3a-3b) Objectives To have the awareness of protecting sharks and respecting nature To understand the passage about endangered animals -- sharks To learn to use some words and expressions shark; fin; cruel; the food chain; ecosystem; industry; law no longer; be harmful to; at the top of shark /ʃɑ:k / n. 鲨鱼 fins / fInz / n.鳍 New words chain [tʃeɪn] n. 链子；链条 cruel [kru:əl] adj. 残酷的；残忍的 law [lɔː] n. 法律；法规 the food chain [tʃeɪn] 食物链 at the top of 在……顶部或顶端 at the top of the food chain industry [ˈɪndəstri] n. 工业；行业 science [ˈsaɪəns] n. 科学 scientific [ˌsaɪənˈtɪfɪk] adj . 科学的；科学上的 scientific studies 科学研究 harmful [ˈhɑ:mfl] adj . 有害的 be harmful to 对……有害 Smoking is harmful to our health. ecosystem n. [ˈi:kəʊsɪstəm] 生态系统 WildAid [ˈ waɪldeɪd ] 野生救援协会 WWF (World Wide Fund for Nature) 世界自然基金会 WildAid 野生救援协会(美国） World Wide Fund for Nature 世界自然基金会 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； 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。 shark [ ʃɑ:k ] n. 鲨鱼 fin [ fIn ] n. 鳍 cruel [ kru:əl] adj. 残酷的；残忍的 chain [tʃeɪn] n. 链子；链条 the food chain 食物链 at the top of 在……顶部或顶端 ecosystem [ˈi:kəʊsɪstəm] n. 生态系统 industry [ˈɪndəstri] n. 工业；行业 scientific [ˌsaɪənˈtɪfɪk] adj. 科学的；科学上的 scientific studies 科学研究 harmful [ˈhɑ:mfl] adj. 有害的 be harmful to 对……有害 law [lɔː] n. 法律；法规 WildAid [ˈ waɪldeɪd ] 野生救援协会 WWF (World Wide Fund for Nature) 世界自然基金会 shark fin cruel harmful be harmful to at the top of chain the food chain ecosystem industry law scientific n. 鲨鱼 n. （鱼）鳍 adj. 残酷的；残忍的 adj. 有害的 对......有害的 在......顶部或顶端 n. 链子；链条 食物链 n. 生态系统 n. 工业；行业 n. 法律；法规 adj. 科学上的；科学的 Words Review n. 鲨鱼 n. （鱼）鳍 adj. 残酷的；残忍的 adj. 有害的 对......有害的 在......顶部或顶端 n. 链子；链条 食物链 n. 生态系统 n. 工业；行业 n. 法律；法规 adj. 科学上的；科学的 shark fin cruel harmful be harmful to at the top of chain the food chain ecosystem industry law scientific Words Review Do you like these animals? Do you enjoy ocean？ The ocean is beautiful because of the diversity (多样性) of life. 16 Sharks are cruel. Do you like sharks? the most dangerous animal in the ocean shark What is the king of the sea? No predators （天敌） the most dangerous animal in the ocean Sharks are at the top of the food chain in the ocean’s ecosystem. A food chain Many people think that sharks are too strong to be endangered, but they are wrong. Sharks are also endangered. A.in great danger B. dangerous In fact, now the number of sharks is less and less. Who is killing them? Who is the real king of the food chain? Human beings What are they? Shark fins Shark fin soup It is reported that China is the largest consumer ( 消费者)of shark fin. Do you still want to try the shark fin soup? Do you know how to get the shark fin? What happens to the shark? the shark is caught (catch) by people. First , the fins are cut (cut) off by people. Next , 切除 the shark fins are cooked (cook) into the shark fin soup by people. 鱼翅羹 Then , the shark without fins is thrown (throw) back into the ocean by people. 扔回到… Finally , If a shark doesn’t have a fin, what will happen? A shark can no longer swim and slowly dies. The sharks are endangered! shark fin soup What if there were no sharks？ know about sharks What can you learn from the video? Save the sharks! What should we do? Save the sharks ! 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. A:in great danger B:dangerous Before reading Look at the picture and the title and answer. Prediction Tip: Get information from the title and the picture. 37 Fast-reading Skimming 略读 Reading Tip 2 Find out the key words in each paragraph. You can get some information. (找出每段的关键词) Read the passage quickly and match the main idea of each paragraph. Para1. A. endangered sharks Para2. B. shark fin soup Para3. C. help save the sharks! Save the sharks ! Read the passage quickly and match the main idea of each paragraph. Para1. A. endangered sharks Para2. B. shark fin soup Para3. C. help save the sharks! Read the passage about sharks and complete the fact sheet below. Where shark fin soup is popular: __________________________ Number of sharks caught and traded every year: _____________________ How governments can help: _____________________________ _____________________________ Two environmental groups against “finning”: ____________________ In southern China Around 70 million To develop laws to stop the sale of shark fins WildAid and WWF Fast reading Scanning 寻读/扫读 Careful reading Para 1 01 What is shark's fin soup? 02 What is shark's fin soup made of? It is made of shark fins. 03 What does the writer think of this dish? famous expensive popular 04 From Para 1, what does it mean to enjoy a bowl of shark's fin soup? It means that you're killing a whole shark. Why? ( )①Shark fin soup is famous and expensive around the world. ( ) ②You’re killing a whole shark when you enjoy a bowl of shark fin soup. Read Para. 1 and tell T or F. Para.1 F T = in southern China. Careful reading = each time 43 1. 听说 2. 鱼翅汤/羹 3. 在中国南方 4. 一整只鲨鱼 5. 每次 6. 一碗 1. hear of/about 2. shark fin soup 3. in southern China 4. a whole shark 5. each time/every time 6. a bowl of… Read Para.1 and underline the phrases. What will happen if sharks don't have their fins? When people _______ sharks ,they ______ their fins and _______ the sharks _________ the ocean. Without a fin, a shark can no longer swim and slowly dies. Para.2 Careful reading How do people get shark fins? Read and fill in the blanks. catch cut off throw back into =If there isn’t a fin This is not only cruel , but also harmful to the environment. fact Para.2 Careful reading When people catch sharks, they cut off their fins and throw the sharks back into the ocean. fact What’s the fact? This is not only cruel , but also harmful to the environment . Para.2 Careful reading cruel harmful Why is it cruel ? When people catch sharks, they cut off their fins and throw the sharks back into the ocean. Without a fin, a shark can no longer swim and slowly dies. Why is it harmful to the environment ? Sharks are at the top of the food chain in the ocean’s ecosystem. If their numbers drop too low, it will bring danger to all ocean life. fact This is not only cruel , but also harmful to the environment . Para.2 Careful reading Sharks can never be endangered because they are the strongest in their food chain.( ) F Para.2 Careful reading Read Para. 2 and tell T or F. in fact 2.The numbers of some kinds of sharks have fallen (fall) by over 90 percent in the last 20 to 30 years. 1.Around 70 million sharks are caught (catch) and traded (trade) in this industry every year. Sharks can never be endangered.( ) Read Para. 2 again and tell T or F. F Para.2 Careful reading When…catch , cut off , throw…back into Para2. Mind Map 思维导图 Without , no longer 2. If, bring danger to… 1. at the top of the food chain 1. 70: are caught & traded 2. 90: The numbers of, have fallen, in the last 20 to 30 years …not only cruel, but also harmful … Fact 2 different opinions Many believe… never be endangered. When people catch sharks, they cut off their fins and throw the sharks back into the ocean. cruel Without a fin, a shark can no longer swim and slowly dies. harmful 1.Sharks are at the top of the food chain in the ocean’s ecosystem. 2.If their numbers drop too low, it will bring danger to all ocean life. 2.The numbers of some kinds of sharks have fallen by over 90 percent in the last 20 to 30 years. 1.Around 70 million sharks are caught and traded in this industry every year. Para.2 Fill in the blanks according to Para.2 fact two different opinions endangered ① ② & Work in pairs and retell Para.2 Para.2 When people _____ sharks, they ______ their fins and ______ the shark ________ the ocean. cut off throw Without a fin, a shark can__________ and___________. no longer swim slowly dies Many believe that sharks can never___________ , because they are __________ in their food chain. be endangered the strongest back into Around 70 million sharks _________and ______ in this ________ every year. Finish the mind-map. This is not only _____, but also _______to the environment. because But in fact however Sharks are _________ the food chain in the ocean’s ________. If their numbers ______ too low, it will ___________ all ocean life. The numbers of some kinds of sharks _____________ over 90 percent __________________. bring danger to have fallen by in the last 20 to 30 years cruel harmful catch two different opinions at the top of ecosystem drop are caught traded industry 53 Para.2 When people _____ sharks, they ______ their fins and ______ the shark ________ the ocean. Without a fin, a shark can__________ and___________. Many believe that sharks can never___________ , because they are __________ in their food chain. Around 70 million sharks _________and ______ in this ________ every year. Retell Para. 2. This is not only _____, but also _______to the environment. because But in fact however Sharks are _________ the food chain in the ocean’s ________. If their numbers ______ too low, it will ___________ all ocean life. The numbers of some kinds of sharks _____________ over 90 percent __________________. two different opinions 54 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 ocean’s ecosystem If sharks’ numbers drop too low, It will bring danger to all ocean life. 1. 切除/掉/断 2. 把…扔回到… 3. 不但…而且… 4. 对…有害 5. 不再 6. 在食物链的顶端 7. 在海洋生态系统中 8. 给…带来危险 9. 所有海洋生物 10. 濒临灭绝 11. 事实上 12. 被捕杀和交易 13. …的数量 14. 下降了 15. 在过去的二三十年里 1. cut off 2. throw…back into… 3. not only…but also… 4. be harmful to… 5. no longer 6. at the top of the food chain 7. in the ocean’s ecosystem 8. bring danger to… 9. all ocean life 10. be endangered 11. in fact 12. be caught and traded 13. the number of… 14. fall by 15. in the last 20 to 30 years Read Para.2 and underline the phrases. What are the names of the two environmental protection groups ? Read Para. 3 and answer the questions 2. What are they doing to protect the sharks? & what have they done to protect the sharks? Para.3 Careful reading A.培养 B.壮大 C.完善 3. Is the shark fin soup good for health? ___. So far, no ______________ have shown that shark fins are good for health. A.科学的 B.理论的 1). They are ________ the public about ________ 2). They have even asked governments to ___________ to stop the ___ of shark fins. teaching “finning” develop laws sale No scientific studies 科学研究显示，鱼翅中胶原蛋白含量虽然很 高，但缺少一种必需的氨基酸(色氨酸)，不容易 被人体吸收。鱼翅的营养价值还不如牛奶，鸡蛋。 另外，鱼翅被汞等有毒重金属污染的程度高 达70%。鲨鱼处在食物链顶端，因此它们体内积 聚的有毒物质常常超出正常允许含量的数十倍。 = So why eat them? Help save the sharks! It even does harm to people's health. Why do people eat shark fin's soup? 1 2 It is expensive, it is like a symbol of status(地位) . People think it is good for their health. 1. 环境保护组织 2. 世界各地 3. 例如 4. 要求某人做某事 5. 完善法律 6. 阻止鲨鱼鳍的销售 7. 到目前为止 8. 科学研究 9. 对…有好处 1. environmental protection groups 2. around the world 3. such as 4. ask sb. to do sth. 5. develop laws 6. stop the sale of shark fins 7. so far 8. scientific studies 9. be good for… Read Para.3 and underline the phrases. Listen to the tape, imitate(模仿) it, and at the same time,find out your questions. Question time If their numbers drop too low, it will bring danger to all ocean life. Why? sharks planktons 浮游生物 因为我们生存所需的氧气的70%是海洋中的浮游生物提供的，鲨鱼一旦灭绝，没有了天敌的控制的其它海洋生物就会大量吞噬海洋浮游生物，造成地球的缺氧。海洋是地球上最重要的生态系统，起到调节气候和为其它生物提供食物的作用，因此拯救鲨鱼其实就是在拯救人类自己。 at the top of the food chain in the ocean’s ecosystem If their numbers drop too low, it will bring danger to all ocean life. Many have heard of shark fin soup. It is a famous and 1.________ dish and it is especially popular in 2.________ China. The soup is 3.______ with shark fins. So far, no scientific studies have shown that shark fins are good for 4.______. Everyone should stop enjoying shark fin soup. It is a way to help 5._____ the sharks. When people catch sharks, they cut off their fins and 6._______ the sharks back into the ocean. Without a fin, a shark can no longer swim and slowly 7.____. This is not only cruel, but also 8.________ to the environment. Some environmental protection groups around the world are 9.________ the public about “finning”. They have even asked governments to develop laws to 10.____ the sale of the shark fins. Read aloud and fill in the blanks. popular southern made health save throw dies harmful teaching stop Some people like to eat , especially in . But getting the shark fin is very .When people catch sharks,they their fins and throw the sharks back .The sharks slowly die because they can't .And it is also to the environment. Sharks are at the of the .If the of sharks ,it will break the balance of the nature. Please say no to eating shark fin soup, and take action to the sharks! Task 3 harmful cut off swim top cruel southern China number save food chain into the ocean review the text ! shark fin soup without fins drop too low Exercise Complete the passage according to the article. Some people like eating shark fin soup, especially in________China.A whole shark has been killed_______ 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 _______ by over 90 percent in the last 20 to 30 years.So they are____________.Let's______sharks. cut off no longer bring danger to The numbers of have fallen endangered save each time southern Kill a whole shark each time you enjoy…! It is not only …, but also … to the … Without a fin, a shark can… swim and… Sharks are at the top of the … in the ocean’s …. If their numbers … too low, it will bring … to all ocean life. Around … million sharks are caught and… The number of…have fallen by…in the last.. When people catch…, they … their fins and … the shark back into the... Para 1. Proposing (提出) the fact Para 2. Analyzing (分析) the problem Para 3. Solving the problem Environmental protection groups are … the public about ... They have asked the … to develop … to stop the … of shark fins. After reading Have a try: Let’s retell the article Reason: Comment: at the top of food chain , ecosystem, numbers drop, bring danger to... Save the sharks! Shark fin soup: popular , southern China What people do: catch, cut off , throw … back into ... Result: without, can no longer swim, slowly dies. not only cruel , but also harmful to. Sharks’ situation: be endangered, although… ② numbers, have fallen , 90% ,in the last 20 to 30 years. Environmental protection groups (Wild Aid & WWF): ② teach … about … ① ask ...to ..laws to stop … scientific studies: ①70 million ,are caught , traded , industry NO…, show …, be good for ... Retell Para.1 Shark fin soup….in southern China. Each time...killing a whole shark Para.2 When….cut off….throw…back into... This…not only…but also…. Many believe that sharks…, but in fact, …around 70 millions…, over 90 percent…. Para.3 Environment protection groups… Finning”. …developed laws…. So far no scientific studies…. So why eat them? Help save the sharks! Retell Save the sharks be killed for shark fin soup Why? How? catch…,cut off…, throw back into… Results? can no longer swim, slowly die be harmful to the environment bring danger to all ocean life How? Teach the public about “finning” To develop laws to stop the sale of shark fins. No scientific studies have shown that shark Fins are good for health.. 3a Mind map Where shark fin soup is popular Number of sharks caught and traded every year How governments can help Two environmental groups against “finning” in southern China around 70 million develop lows to stop the sale of shark fins WildAid and the WWF 3a Read the passage about sharks and complete the fact sheet below. 3b Read the passage again and fill in the blanks with the words in the box. so although if but when 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 ocean’s 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. when so but Although if Is the shark the only animal that is endangered? Sharks are not the only animals that are endagered. Many animals such as elephants,pandas, tigers are endangered too. Why are the animals endangered? What can we do to save the animals? air pullution greenhouse effect (温室效应) global warming （全球变暖) trees were cut down ,animals lost their homes killing protect the trees ,plant more trees stop killing cut down air pollution Groupwork What can we do to help save the wild animals? Refuse to eat wild animals. Refuse to buy products made from endangered wildlife. Reduce pollution and protect the environment. Plant more trees and build more nature reserves. Develop more severe laws to stop the sale of wild animals. Raise people's awareness to protect wildlife. Post reading 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。 Don’t let our children can only see today’s 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。 When the buying stops, the killing can too. Animals are our friends, we should protect them!!! Protecting them is to protect ourselves!!! 新型冠状病毒 wild animals What is the origin (起源) of 2019 N-CoV? No buying, no killing! Saving animals is saving ourselves. Let’s write a proposal(倡议书). 80 Summary Problem Facts Save the sharks Solution Problem Facts Solution … … … Save the tigers 两分钟小组讨论，根据问题，完成思维导图（增加细节）。 Discussion people are killing... for … … not only…, but also … …play an important part in…ecosystem. If … drop…, it will bring danger to… …becoming fewer and fewer It is important to save.... We can also ask…to develop laws to stop... Problem Facts Solution Write a slogan(口号) in the end Make it more powerful. Writing Homework Write an article about the endangered animals,the following sentences may help you. There is more and more pollution on the earth, many kinds of animals are endangerd. For examples, sharks,elephants, tigers and so on. But why are the animals endangered? _________ __________________________________________________________________________________________ So, to save the animals, _____________________ __________________________________________________________________________________________ let's take action! Thank you! $