Unit 13 Section A (3a-4c)课件-2024-2025学年人教版英语九年级全册

So together,our actions can make a difference and lead to a better future! 2d Read 2d and complete the mind map. advantage n.优点；有利条件 （反）disadvantage 缺点 Revision Key phrases Section A (3a-4c) Unit 13 We’re trying to save the earth! shark, fin, cruel, harmful, be harmful to, at the top of, chain, the food chain,ecosystem, industry, scientific 1. Have you ever seen a shark（鲨鱼）? 2. What do you know about sharks? Discuss with your partner: There are some endangered animals . We should do something to protect the animals and the environment! Save the earth! Save the animals. The zoos provide homes for many endangered animals. Where shark fin soup is popular Number of sharks caught and traded every year How government can help Two environmental groups against “finning” In southern China 70 million develop laws to stop the sale of shark fins WildAid and the WWF Read the passage about sharks and complete the fact sheet below. 3a 立法 阻止售卖鱼翅 例如野生救援协会和世界自然基金会 反对 鱼翅羹 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。 Read the passage about sharks and take notes. 3a 听说 中国南方 每次 割下 扔....回进 不但...而且... 在食物链的顶端 不再（侧重时间） no more侧重数量 海洋生态系统 降得太低 给...带来危险 在食物链里 事实上 ...数量 下降了90%以上 在过去的二三十年中 对...有害 环境保护组织 世界各地 野生鲨鱼援助 世界银行 阻止销售 对健康有益 help do sth. 帮助做某事 help save ...帮助拯救... 例如 制定法律 1. hear of =hear about 2. shark fin soup 3. in southern China 4.cut off 5. each time you enjoy a bowl of shark fin soup 6. throw the sharks back into the ocean 7. be harmful to the environment 8. no longer= not...any longer 9. at the top of... 10. the food chain in the oceans ecosystem Useful language points in 3a 听说 鱼翅羹 在中国南方 切掉 每次你喝一碗鱼翅羹的时候 把鲨鱼扔回到海里 对环境保护有害 不再 在...顶端 海洋生物系统食物链 11. drop too low 12. bring danger to all ocean life 13. in the last 20 to 30 years 14. environmental protection groups 15. develop laws 16. stop the sale of shark fins 17. no scientific studies 18. help save the sharks 降得太低 给所有海洋生物带来危险 在过去的20年到30年里 环境保护组织 立法 停止鱼翅的销售 没有科学研究 帮助拯救鲨鱼 Save the Sharks! Many have heard of shark fin soup. This famous and expensive dish is especially popular in southern China. But do you realize that you're killing a whole shark each time you enjoy a bowl of shark fin soup？ When people catch sharks, they cut off their fins and throw the sharks back into the ocean. This is not only cruel, but also harmful to the environment. Post-reading:Listen and pay attention to the blanks,then fill in the blanks. Without a fin, a shark can no longer swim and slowly dies. 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.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. Environmental protection groups around the world, such as WildAid 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! Read the passage again and fill in the blanks with the words in the box. 3b 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. 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 take part in, afford, turn off, reusable, pay for, take action, transportation Grammar Focus We’re trying to save the earth. Present progressive The river used to be so clean. used to The air is badly polluted. Passive voice No scientific studies have shown that shark fins are good for health. Present perfect We should help save the sharks. Modal verbs 现在进行时 一般过去时 被动语态 现在完成时 情态动词+动词原形 语法聚焦 一、现在进行时 定义：表示说话时(瞬间)正在进行的动作, 也表示目前或现阶段正在进行的动作。 结构: be (am/is/are) + V-ing 标志词：Look, Listen, now, right now… e.g. Look! The boy is crying. 二、used to do与be used to doing used to do sth. 表示过去常常做某事, 而现在往往不做了, 后接动词原形。 be used to doing sth. 表示习惯于做某事 e.g. I used to get up at six o’clock. 我过去常常六点起床。 Joe is used to drinking a cup of coffee every morning. 乔习惯每天早上喝一杯咖啡。 三、被动语态 定义：表示主语是动作的承受者，即行为动作的对象的一种语态。 结构：be +过去分词 e.g. A new school was built last year. 去年建了一所新学校。 Our classroom is cleaned every day. 我们的教室每天打扫。 四、现在完成时 定义：表示动作已经完成, 但对现在造成影响; 或者表示从过去某一时间开始一直延续到现在并还可能持续下去的动作。 结构: has/have + 过去分词 标志词：already, yet, ever, never, since, for… e.g. I haven’t finished my homework yet. 我还没有完成我的家庭作业。 Read the passage again and fill in the blanks with the words in the box. 3b 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. 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 五、情态动词 1. 情态动词本身有一定的词义, 表示说话人的情绪、态度或语气, 但不能单独作谓语, 只能与其他动词构成谓语。 常见的有: can、could、may、might、 must、 need、 shall、 should、 will、would等。 应该/必须/一定 可以/可能 能/会/可以 需要 将 （用于第一人称） 应当 将/愿意 2. 情态动词无人称和数的变化, 后接动词原形。否定式是在情态动词后面加not。个别情态动词有过去式形式, 可用来表达更加客气、委婉的语气。 e.g. Ken can climb up the tress like a koala. 肯可以像一只考拉一样爬树 Mary could ride a bicycle when she was five , 玛丽在五岁时就能骑自行车了。 You mustn’t play with fire. It is dangerous. 你不能玩火。那很危险。 Fill in the blanks with the correct verb forms 1. 她过去常常周末和朋友去购物。 2. 他习惯于每天熬夜。 3. 我们不能在教室里吃东西。 4. 首先你必须完成作业。 5. 他现在不可能在家。 6. 她一定知道这个问题的答案。 We can’t eat in the classroom.  You must finish your homework first. He can’t be at home now.  She must know the answer to this question. He is used to staying up every day. She used to go shopping with friends on weekends. Translate the sentences Fill in the blanks with the correct forms of the verbs in brackets. 4a Joe: _____ you ever ______ (take) part in an environmental project ? Eric: Yes, I have. I ______ (help) with a Clean-Up Day last year. It was __________ (consider) the biggest clean-up project this city ____ ever ____ (have). Have taken helped considered had had Joe: How many people ____ (take) part? Eric: I _____ (think) more than 1,000 people ______ (come) to help out. Joe: That’s fantastic! I guess everyone in this city is ______ (try) to improve the environment. Eric: Yes, we can’t afford to ____ (wait) any longer to take action! took think came trying wait afford v. 承担得起; 提供, 给予（财力，精力，时间） afford to do sth. (常与can、be able to连用) 买得起; 有足够的… eg.He can afford to buy the big house. 参加（活动） not ... any longer 不再 采取行动 超过 Fill in the blanks with the appropriate modal verbs from the box. 4b People __________ think that big things ____ be done to save the earth. Many forget that saving the earth begins with small things. For example, you ____ save electricity by turning off the lights when you leave a room. You ____ also use reusable bags instead of plastic bags. I think it’s a great idea that you now ______ pay for plastic bags in some stores. And instead of driving to school or work, you __________ ride your bike or walk. If it’s far, you _______ take the bus. All these small things _____ add up and become big things that ________ improve the environment. Let’s take action now! may/might must can can would could have to should must may/ might could have to can/should can/could could would/can turn around 转身 turn up 调高(音量) turn down 调低; 拒绝 turn into 变成; 进入 turn on 打开, 发动 turn off 关掉, 关闭 turn out to be 结果是 turn over 移交 代替 支付 加起来 行动起来 Make a list of things that people can do to help the environment and discuss your list with your partner. 4c I think that everyone should use public transportation. I disagree. It’s difficult for parents with young children to use public transportation… Complete the exercises in the textbook. 课后作业 $$