Unit 5 A fine balance课时3 Grammar 课时练习 2026-2027学年外研版英语九年级上册

**基本信息** 外研版九年级上Unit 5 A fine balance课时3 Grammar同步练，通过基础-进阶-综合三层设计，实现从词汇语法到语篇应用的递进，强化语言能力与思维品质。 **分层设计** |层次|知识覆盖|设计特色| |----|----------|----------| |基础层|核心词汇与基础语法（单词/词组默写、句子补全）|夯实语言基础，聚焦单元核心词汇与语法点，如关系代词使用| |进阶层|语法规则应用（词形变化、阅读填空）|强化语法迁移能力，通过语境化练习巩固语法规则，培养语言运用能力| |综合层|语篇综合能力（翻译、阅读、完形、还原）|提升语篇理解与逻辑思维，融合说明文、记叙文等体裁，适配新授课从输入到输出的教学需求|

2026-2027学年外研版九年级上 Unit 5 A fine balance 课时3 Grammar 部分课时练习 一、单词默写(根据音标或中文写出英文单词) 1. _ / l bl/ adj. 全球的,全世界的 2. _ / v f / n. 过度捕捞 3. _ / ri nha s/ n. 温室,暖房 4. _ / s/ n. 气,气体 5. _ /k n tr l/ v. 控制,限制 6. _ / r b / n. 垃圾,废弃物 7. _ /h m/ v. 损害,危害 8. _ / p n m nt/ n. 惩罚,处罚 二、词组默写(根据中文写出英文词组) 1. 覆盖……的表面积 _ 2. 温室气体 _ 3. 来自陆地 _ 4. 主要原因是 _ 5. 在固定的时期 _ 6. 没有时间可浪费 _ 三、根据要求完成句子(用所给中文提示补全英文句子,每空一词) 1. 覆盖地球表面70%以上的海洋正在呼救。 The oceans _ cover over 70% of the earth's surface are crying out for help. 2. 无法忍受更高温度的海洋动物正在遭受全球变暖的影响。 Sea animals _ can't live with higher temperatures are suffering from global warming. 3. 超过80%的海洋污染来自陆地。 More than 80% of ocean pollution _ from land. 4. 我们必须使用产生少量或没有温室气体的绿色能源。 We must use green energy _ produces little or no greenhouse gases. 5. 人们只能在一年中的固定时期捕鱼。 People can only fish during a _ period of the year. 四、用括号内所给词的适当形式填空 1. The oceans are crying out for help because of _ (pollute) and overfishing. 2. Many animals _ (live) in the sea are disappearing. 3. There are many things _ (we) can do to protect the oceans. 4. People must stop _ (throw) rubbish into the oceans. 5. Without _ (act), we will only see beautiful sea animals in museums. 五、阅读短文,在空白处填入一个适当的词或用括号内所给词的正确形式填空 The world's oceans are in great danger. The oceans (1) _ cover more than 70% of our planet are facing serious problems. Sea animals (2) _ depend on a healthy ocean are suffering. Many species are disappearing (3) _ a rapid speed. One of the biggest problems is plastic pollution. Millions of tons of plastic waste (4) _ (enter) the oceans every year. This plastic (5) _ (harm) sea animals that mistake it for food. Another problem is overfishing. People are catching more fish (6) _ the oceans can naturally replace. For those (7) _ care about the oceans, there is a lot (8) _ can be done. We should reduce the use of single-use plastics. We should also support sustainable fishing practices. Organizations (9) _ work to protect the oceans need our support. Remember, there is no time (10) _ (waste). 六、语篇翻译(将短文中划线部分翻译成中文) Saving Our Coral Reefs Coral reefs are one of the most diverse ecosystems on Earth. ① They are home to about 25% of all marine species. However, coral reefs are in great danger because of climate change and pollution. ② When ocean temperatures rise, corals lose the algae (藻类) that live inside them and turn white. This is called coral bleaching (白化). ③ Without algae, corals cannot get enough food and eventually die. Pollution also harms coral reefs. Plastic waste and chemicals that flow into the sea from rivers damage the corals. ④ Many marine animals that depend on coral reefs for shelter and food are also affected. ⑤ We need to take action to protect coral reefs before it is too late. Reducing carbon emissions and limiting plastic use are good places to start. ① _ ② _ ③ _ ④ _ ⑤ _ 七、阅读理解(A篇为说明文,B篇为记叙文,C篇为议论文,每题仅有一个最佳选项) A Overfishing is one of the biggest threats to our oceans. It happens when people catch fish faster than they can reproduce (繁殖). This has serious consequences for both marine ecosystems and human communities. When too many fish are caught, the balance of the ecosystem is disturbed. Predators (捕食者) that depend on those fish for food may also struggle to survive. This can cause a chain reaction that affects the entire ecosystem. Overfishing also affects people who rely on fishing for their livelihoods. In many coastal communities, fishing is the main source of income and food. When fish stocks (储量) decrease, these communities suffer. To solve this problem, governments have introduced fishing quotas (配额) and protected areas. However, more needs to be done. It is important to support sustainable fishing practices and educate people about the importance of protecting our oceans. ( )1. What is overfishing? A. Fishing in the ocean. B. Catching fish faster than they can reproduce. C. Catching fish for food. D. Protecting fish from predators. ( )2. What happens when too many fish are caught? A. The ecosystem becomes stronger. B. Predators may struggle to survive. C. The fish population increases. D. The ocean becomes cleaner. ( )3. How does overfishing affect coastal communities? A. It provides more jobs. B. It increases their income. C. It causes them to suffer when fish stocks decrease. D. It makes fishing easier. ( )4. What have governments done to address overfishing? A. They have stopped all fishing. B. They have introduced fishing quotas and protected areas. C. They have encouraged more fishing. D. They have ignored the problem. ( )5. What does the author suggest we should do? A. Catch more fish. B. Stop fishing completely. C. Support sustainable fishing and educate others. D. Only fish in protected areas. B Last summer, I had the opportunity to visit an ocean cleanup project on the coast of Shandong. I had always heard about ocean pollution, but seeing it with my own eyes was completely different. The volunteers were removing plastic waste from the beach and the water. One volunteer, a retired teacher named Mr Liu, told me that most of the plastic comes from everyday items like bottles and bags. "These things are used for only a few minutes," he said, "but they stay in the ocean for hundreds of years." I joined the volunteers for the day. It was hard work, but it was meaningful. We collected over 200 kilograms of plastic waste. I felt proud to make a small contribution. This experience changed my view of plastic. Now I always bring my own reusable bags and bottles. I also tell my friends about what I learned. I believe that if more people take action, we can make a difference to our oceans. ( )6. What did the writer visit last summer? A. A fishing village. B. An ocean cleanup project. C. A marine museum. D. A plastic factory. ( )7. What did Mr Liu say about plastic items? A. They are used for hundreds of years. B. They are used for only a few minutes but stay in the ocean for hundreds of years. C. They are easy to recycle. D. They are not harmful to the ocean. ( )8. How much plastic did the writer and the volunteers collect? A. Over 20 kilograms. B. Over 200 kilograms. C. Over 2,000 kilograms. D. Over 20,000 kilograms. ( )9. What change did the writer make after the experience? A. He stopped using plastic completely. B. He started bringing reusable bags and bottles. C. He moved to the coast. D. He became a full-time volunteer. ( )10. What is the writer's message to others? A. Plastic pollution is not a problem. B. Everyone should stay away from the ocean. C. If more people take action, we can make a difference. D. Only volunteers can help the ocean. C The ocean is sometimes called the "blue heart" of our planet. It covers more than 70% of the earth's surface and plays a vital role in our lives. Yet, many people do not fully understand why protecting the ocean is so important. First, the ocean produces over half of the world's oxygen. This makes it essential for our survival. We often think of forests as the "lungs of the earth," but the ocean is equally important. Second, the ocean provides food for billions of people. Fish and other marine life are a major source of protein for many communities. Overfishing threatens this food supply. Third, the ocean helps regulate our climate. It absorbs (吸收) large amounts of carbon dioxide and heat from the atmosphere. Without the ocean, the planet would be much warmer. In conclusion, protecting the ocean is not just about saving marine animals. It is about protecting our own future. We must take action now to reduce pollution, stop overfishing, and address climate change. ( )11. What is the main idea of the passage? A. The ocean is beautiful but not important. B. Protecting the ocean is important for many reasons. C. We should avoid going to the ocean. D. Only scientists need to care about the ocean. ( )12. How much of the world's oxygen does the ocean produce? A. About one quarter. B. About half. C. About three quarters. D. Almost all. ( )13. Why is the ocean important for food? A. It provides water for crops. B. It provides fish and other marine life for billions of people. C. It helps grow vegetables. D. It provides salt for cooking. ( )14. How does the ocean help regulate the climate? A. It produces cold air. B. It absorbs carbon dioxide and heat. C. It reflects sunlight. D. It creates clouds. ( )15. What does the author say we must do? A. Stop eating fish completely. B. Move away from the coast. C. Take action to reduce pollution and address climate change. D. Only protect marine animals. 八、完形填空(阅读下面的短文,从每题所给的A、B、C、D四个选项中选出最佳选项) The ocean covers most of our planet, but it is in (1) _. Human activities have caused great damage to marine ecosystems. Plastic pollution, overfishing, and climate change are all (2) _ the health of the ocean. Plastic waste is one of the (3) _ problems. Every year, millions of tons of plastic (4) _ into the ocean. This plastic (5) _ marine animals that mistake it for food. Some animals get caught in plastic waste and (6) _. Overfishing is (7) _ serious problem. Fishing boats are catching fish (8) _ quickly that many species cannot recover. This is destroying the balance of marine ecosystems. Without action, the (9) _ of the ocean will continue to decline. Climate change is also (10) _ the ocean. Rising temperatures cause coral reefs to (11) _. Many marine animals (12) _ depend on coral reefs for shelter are losing their homes. There is still hope, (13) _. If we take action now, we can protect the ocean. We can reduce our use of plastics, support sustainable fishing, and (14) _ our carbon footprint. The future of the ocean (15) _ on us. ( )1. A. balance B. danger C. order D. control ( )2. A. improving B. damaging C. protecting D. creating ( )3. A. smallest B. biggest C. newest D. oldest ( )4. A. appears B. disappears C. enters D. leaves ( )5. A. helps B. feeds C. saves D. harms ( )6. A. live B. die C. grow D. fly ( )7. A. other B. others C. another D. the other ( )8. A. so B. such C. too D. very ( )9. A. beauty B. size C. health D. depth ( )10. A. affecting B. improving C. ignoring D. helping ( )11. A. grow B. recover C. die D. appear ( )12. A. which B. who C. whom D. whose ( )13. A. but B. because C. however D. unless ( )14. A. increase B. reduce C. forget D. double ( )15. A. depends B. decides C. counts D. calls 九、阅读还原(从 A-G 七个选项中选出五个填入短文空缺处,使短文完整流畅) Why We Should Reduce Plastic Use Plastic is everywhere in our daily lives. We use it for packaging, shopping bags, water bottles, and many other things. (1) _ But plastic also causes serious problems for our environment. First, plastic does not break down easily. (2) _ This means that every piece of plastic ever made still exists somewhere on our planet. Second, plastic pollutes our oceans. Millions of tons of plastic waste end up in the sea every year. (3) _ They eat plastic or get caught in it. Many of them die because of plastic pollution. Third, plastic is made from fossil fuels (化石燃料). (4) _ The production of plastic releases greenhouse gases that contribute to climate change. (5) _ We can use reusable bags, bottles, and containers. We can also support companies that use less plastic packaging. Every small change can make a big difference. A. It can take hundreds of years to disappear. B. Marine animals are harmed by plastic waste. C. Plastic is cheap and convenient to use. D. This makes it a major contributor to global warming. E. Fortunately, there are many ways to reduce plastic use. F. Plastic is necessary for modern life. G. We can recycle all plastic products easily. (1) _ (2) _ (3) _ (4) _ (5) _ 参考答案 一、单词默写 1. global 2. overfishing 3. greenhouse 4. gas 5. control 6. rubbish 7. harm 8. punishment 二、词组默写 1. cover ... of the surface 2. greenhouse gases 3. come from land 4. the main cause of 5. a fixed period 6. no time to waste 三、根据要求完成句子 1. that / which 2. that / which 3. comes 4. that / which 5. fixed 四、用括号内所给词的适当形式填空 1. pollution 2. living 3. we 4. throwing 5. action 五、阅读填空 1. that / which 2. that / which 3. at 4. enter 5. harms 6. than 7. who 8. that 9. that / which 10. to waste 六、语篇翻译 ① 它们(珊瑚礁)是大约25%的海洋物种的家园。 ② 当海洋温度上升时,珊瑚会失去生活在它们体内的藻类,变成白色。 ③ 没有藻类,珊瑚无法获得足够的食物,最终会死亡。 ④ 许多依赖珊瑚礁作为庇护所和食物来源的海洋动物也受到影响。 ⑤ 我们必须在为时已晚之前采取行动保护珊瑚礁。 七、阅读理解 A篇:1. B 2. B 3. C 4. B 5. C B篇:6. B 7. B 8. B 9. B 10. C C篇:11. B 12. B 13. B 14. B 15. C 八、完形填空 1. B 2. B 3. B 4. C 5. D 6. B 7. C 8. A 9. C 10. A 11. C 12. A 13. C 14. B 15. A 九、阅读还原 1. C 2. A 3. B 4. D 5. E(F和G为多余选项) 学科网(北京)股份有限公司 $