Unit 13 We're trying to save the earth! Section A（3a-3b）同步练 2024-2025学年人教版九年级英语全册

Unit 13 We're trying to save the earth! Section A（3a-3b）导学案 学习目标 1. 学生能够准确认读并拼写与鲨鱼及海洋生态相关的重点词汇，如shark、fin、ecosystem、chain、industry等。 2. 掌握重点短语和句式，如at the top of、cut off、so far等，以及重点句型“Many believe that... But in fact...” “If...，it will...” 等，并能正确运用进行造句。 3. 能够通过阅读文章，获取关于鲨鱼被捕捞、交易情况，在海洋生态系统中的地位等关键信息，提升阅读理解能力。 4. 增强学生对鲨鱼等海洋生物的保护意识，认识到保护海洋生态系统的重要性。培养学生的社会责任感，鼓励学生积极参与到保护海洋生物的行动中来。 课后习题 一、单词拼写 根据汉语提示写出英语单词。 鲨鱼：______ 鳍：______ 链子；链条：______ 生态系统：______ 工业；产业：______ 二、单项选择 1. When people catch sharks, they ______ their fins and throw the sharks back into the ocean. A. cut down B. cut off C. cut up D. cut out 2. Sharks are ______ the top of the food chain in the ocean's ecosystem. A. on B. in C. at D. to 3. Many believe that sharks can never be endangered ______ they are the strongest in their food chain. A. because B. so C. although D. but 4. The numbers of some kinds of sharks have fallen ______ over 90 percent in the last 20 to 30 years. A. by B. to C. in D. for 5. So far, no scientific studies have shown that shark fins are good ______ health. A. at B. for C. with D. to 三、语法填空 Many people enjoy shark fin soup. But they don't realize they are killing a whole shark 1. ______ (when) they have this soup. When sharks 2. ______ (catch), their fins are cut off and they 3. ______ (throw) back into the ocean. Without a fin, a shark can't swim and will die 4. ______ (slow). Sharks are at the top of the food chain in the ocean's ecosystem. If their numbers drop too 5. ______ (low), it will bring danger to all ocean life. Now some environmental groups 6. ______ (teach) the public about “finning” and 7. ______ (ask) governments to develop laws to stop the 8. ______ (sell) of shark fins. 四、翻译句子 1. 我们正在努力拯救地球。 2. 鲨鱼处于海洋生态系统食物链的顶端。 3. 每年大约有七千万条鲨鱼被捕捞和交易。 4. 到目前为止，没有科学研究表明鱼翅对健康有益。 5. 帮助拯救鲨鱼！ 五、写作 假设你是李华，你的美国笔友Tom对中国的保护鲨鱼行动很感兴趣。请你给他写一封信，介绍一下鲨鱼面临的现状（如每年被捕捞交易数量、数量下降情况等），保护鲨鱼的重要性（鲨鱼在海洋生态系统中的地位等）以及我们可以采取的行动（如拒绝吃鱼翅、宣传保护等）。 要求：80 - 100词；开头和结尾已给出，不计入总词数。 Dear Tom, I'm glad you're interested in the shark - protection actions in China. Now let me tell you something about it.   Looking forward to your reply. Best regards, Li Hua 参考答案 一、单词拼写 Shark fin chain ecosystem industry 二、单项选择 1. B。“cut off”表示“切除”，人们抓住鲨鱼后切除它们的鳍，符合语境。“cut down”意为“砍倒；削减”；“cut up”意为“切碎”；“cut out”意为“裁剪；删除” 。 2. C。“at the top of...”是固定短语，意为“在……顶端”。 3. A。“许多人认为鲨鱼永远不会濒危，因为它们在食物链中是最强的”，前后是因果关系，用because。 4. A。“fall by + 百分比”表示“下降了……百分比”。 5. B。“be good for”表示“对……有益”。 三、语法填空 1. when。句意为当他们喝这种汤时，他们没有意识到正在杀死一整条鲨鱼。 2. are caught。sharks和catch之间是被动关系，且陈述一般情况，用一般现在时的被动语态。 3. are thrown。they（sharks）和throw之间是被动关系，且陈述一般情况，用一般现在时的被动语态。 4. slowly。修饰动词die，用副词形式。 5. low。修饰动词drop，用副词low。 6. are teaching。根据语境，一些环保组织正在教导公众，用现在进行时。 7. asking。与are teaching并列，省略了are。 8. sale。the后接名词，sell的名词形式是sale。 四、翻译句子 1. We're trying to save the earth. 2. Sharks are at the top of the food chain in the ocean's ecosystem. 3. About 70 million sharks are caught and traded every year. 4. So far, no scientific studies have shown that shark fins are good for health. 5. Help save the sharks! 五、写作 Dear Tom, I'm glad you're interested in the shark - protection actions in China. Now let me tell you something about it. Sharks are facing a serious situation. About 70 million sharks are caught and traded every year. The numbers of some kinds of sharks have fallen by over 90 percent in the last 20 - 30 years. Sharks are at the top of the ocean's food chain. If their numbers drop too low, it will endanger all ocean life. We can do a lot to help. First, we should refuse to eat shark fin soup. Also, we can spread the word about shark protection to more people. Let's work together to save these amazing creatures. Looking forward to your reply. Best regards, Li Hua 学科网（北京）股份有限公司 学科网（北京）股份有限公司 $$