时文阅读05 What Causes Water Pollution（课件）（话题阅读精练）英语高一通用版

该高中英语课件系统梳理了“水污染”单元的核心知识，涵盖成因（废水、石油泄漏、工业废料、农药等）、危害及防治措施。通过语篇分析（说明文General-special结构）、词汇聚焦（vulnerable等核心词汇）、长难句解析，结合“牛刀小试”练习题和写作任务，构建从语篇理解到语言应用的完整知识网络。 其亮点在于采用“语篇研读-语言内化-实践输出”的递进复习策略，如While-reading的段落大意归纳培养思维品质，Language Points的选词填空和长难句分析提升语言能力，Post-reading的视频讨论活动（How to reduce water pollution）及分层写作任务（Homework征文）满足个性化需求。这帮助学生巩固知识，提升综合素养，也为教师提供精准复习路径。

What Causes Water Pollution？ 高一时文阅读 什么导致水污染？ CONTENT 01 Lead in 02 Pre-reading 03 While-reading 04 Post-reading 05 Language Points 06 Homework Part 01 Lead in What will happen if water resources are polluted seriously? What are the reasons for water pollution? Part 02 Before-reading Part 03 While-reading 走进语篇 据联合国统计，世界上80%以上的废水未经处理或再利用就流入环境；在一些最不发达国家，这一数字高达95%。 ①Water is uniquely vulnerable to pollution because it’s able to dissolve more substances than any other liquid on Earth. Toxic substances from farms, towns, and factories readily dissolve into and mix with it, which causes water pollution as a result. ②According to the UN, more than 80% of the world’s wastewater flows back into the environment without being treated or reused; in some least-developed countries, this figure tops 95%. Harmful chemicals and bacteria can be found in sewage and wastewater even after it’s been treated. Households release sewage and wastewater, which makes its way to the ocean, mixing with freshwater and affecting the water quality and marine life. Also, the bacteria found in wastewater breed disease and cause health-related issues in humans and animals. ③Large oil spills and leaks are some of the most significant causes of water pollution. These are often caused by oil drilling operations in the ocean, but nearly half of the estimated 1 million tons of oil that makes its way into marine environments each year comes not from oil tankers, but from land-based sources like factories, farms, and cities. In England and Wales, there are about 3,000 pollution incidents involving oil and fuel each year. Oil makes drinking water unsafe, and a substantial amount of oil released into oceans or rivers water pollution, will destroy marine life and the ecosystems that support them. What’s more, oil reduces the oxygen supply within the water environment. Oil is also naturally released from under the ocean floor through fractures known as seeps. ④Industrial waste is one of the biggest sources of water contamination. Many industrial sites produce waste in the form of toxic chemicals and pollutants, and some don’t have proper waste management systems in place. Sometimes, industrial waste is dumped into nearby freshwater systems. The toxic chemicals filtered from this waste can make the water unsafe for human consumption, and they can also cause the temperature in freshwater systems to change, making them dangerous for marine life. Finally, industrial waste can cause “dead zones,” which are areas of water that contain so little oxygen that marine life cannot survive in them. ⑤To protect crops from pests, farmers use pesticides, however, when these substances seep into the groundwater, they can harm animals, plants, and humans. Additionally, when it rains, the chemicals mix with rainwater, which flows into waterways and creates further pollution. Other agricultural processes, such as uncontrolled spreading of slurries and manures, and ploughing the land, can also cause water pollution. 语篇类型 语篇内容 语篇结构模式 段落大意 Part 1: 1 Part 2: 2-5 说明文 Water is uniquely vulnerable to pollution. Toxic substances from farms, towns, and factories readily dissolve into and mix with it, which causes water pollution as a result. General-special Introduction: It introduces the topic of water pollution. It introduces the causes of water pollution, including wastewater, oil spills, industrial waste, and agricultural pesticides. 牛刀小试 1. Why is water particularly vulnerable to pollution? A. Because it is the most common liquid on Earth. B. Because it is difficult to clean once polluted. C. Because it is used in large quantities by humans. D. Because it can dissolve more substances than any other liquid. D Because it can dissolve more substances than any other liquid. 　 水特别容易受到污染，因为它比地球上任何其他液体都能溶解更多的物质。 细节理解题 ① Water is uniquely vulnerable to pollution because it’s able to dissolve more substances than any other liquid on Earth. 2. What is one of the major sources of oil pollution in marine environments? A. Oil tankers. B. Natural ocean seeps. C. Land-based sources like factories and cities. D. Underwater volcanic eruptions. ③ …but nearly half of the estimated 1 million tons of oil that makes its way into marine environments each year comes not from oil tankers, but from land-based sources like factories, farms, and cities. C Land-based sources like factories and cities. ……但据估计，每年进入海洋环境的100万吨石油中，有近一半不是来自油轮，而是来自工厂、农场和城市等陆地来源。 细节理解题 牛刀小试 ④ Finally, industrial waste can cause “dead zones,” which are areas of water that contain so little oxygen that marine life cannot survive in them. 牛刀小试 3. What is a "dead zone" in water? A. An area with high levels of oxygen. B. A place where marine life thrives. C. A region with low oxygen levels where marine life cannot survive. D. A part of the ocean with no pollution. C A region with low oxygen levels where marine life cannot survive. 最后，工业废料会造成“死区”，即含氧量极低的水域，海洋生物无法在其中生存。 推理判断题 4. How do pesticides contribute to water pollution? A. They make the water taste better. B. They seep into groundwater, flowing into waterways. C. They help clean the water naturally. D. They have no effect on water quality. ⑤ To protect crops from pests, farmers use pesticides, however, when these substances seep into the groundwater. B They seep into groundwater, flowing into waterways. 为了保护农作物不受害虫侵害，农民使用杀虫剂，然而，当这些物质渗入地下水时。 推理判断题 牛刀小试 Part 04 Post-reading Thinking Watch a video. Then talk: How to reduce water pollution？ Thinking Watch a video. Then talk: How to reduce water pollution？ measures Recycle plastic products Don’t dispose of hazardous materials into drains Share awareness of protecting freshwater …… Part 05 Language points 1. vulnerable /ˈvʌlnərəbl/ 2. dissolve /dɪˈzɒlv/ 3. sewage /ˈsuːɪdʒ/ 4. breed /briːd/ 5. seep /siːp/ 6. contamination /kənˌtæmɪˈneɪʃ(ə)n/ 7. toxic /ˈtɒksɪk/ 8. filter /ˈfɪltər/ adj. 脆弱的，易受伤的 v. 解散，解除；消失 n. 污水，污物 v. 交配繁殖；饲养，培育 v.（液体）渗漏，渗透 n. 污染 adj. 有毒的，引起中毒的 v. 过滤；渗入 词汇聚焦 用方框中单词的正确形式填空 词汇练习 选词填空 vulnerable, dissolve, sewage, breed, seep, contamination, toxic, filter 1. The raw _____________ is chemically treated. 2. She was left feeling exposed and _______________. 3. It's not just dropping food on the floor that can lead to bacterial __________________. 4. Many animals_____________ only at certain times of the year. 5. Blood was beginning to _______________ through the bandages. 6. It may _____________ our negative impressions of others. 7. Most of these problems won't simply __________________. 8. Many pesticides are highly ___________________. sewage vulnerable contamination breed seep filter dissolve toxic 长难句分析 Toxic substances from farms, towns, and factories readily dissolve into and mix with it, which causes water pollution as a result. 句子主干： Toxic substances from farms, towns, and factories readily dissolve into and mix with it. 参考 译文 来自农场、城镇和工厂的有毒物质很容易溶解并与之混合，从而造成水污染。 主干语 非限制性定语从句 Part 06 Homework 你校将举办一场征文活动，作文标题是：How to Stop Water Pollution? 内容要求如下： 1.水污染的危害； 2.采取相应措施； 3.总结个人观点。 注意：1. 词数100左右；2．可以适当增加细节，以使行文连贯。 How to Stop Water Pollution? ____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ Homework 24 参考范文 How to Stop Water Pollution? Water pollution is a serious problem that harms both humans and the environment. Polluted water can spread diseases, kill aquatic life, and even affect our food supply. Chemicals and waste dumped into rivers or lakes make the water unsafe for drinking and daily use. To stop water pollution, we must take action. Factories should treat wastewater before releasing it. Farmers can reduce pesticide use to protect groundwater. At home, we should avoid pouring oil or chemicals down drains. Recycling and proper trash disposal also help prevent pollution. In my opinion, everyone plays a role in keeping water clean. Small daily actions, combined with government policies, can make a big difference. Let’s work together to protect our water resources for a healthier future! 25 Thank you for your listening Lavf58.20.100 Packed by Bilibili XCoder v2.0.2 Lavf58.20.100 Packed by Bilibili XCoder v2.0.2 $$