How do pesticides affect the environment（课件）高一时文阅读说明文适中

这是一份高中英语同步教学课件，围绕“杀虫剂如何影响环境”展开时文阅读教学，包含Lead in、Pre-reading等六环节。通过导入问题引发思考，While-reading环节进行语篇分析（说明文、结构模式等）并设“牛刀小试”练习题，Post-reading结合视频讨论农药影响，Language Points聚焦词汇与长难句，Homework含征文任务及范文。 资料特色突出核心素养培养，语言能力上通过词汇练习和长难句分析提升理解表达，思维品质体现在细节理解、推理判断题设计，学习能力借助作业范文引导写作，文化意识渗透环境责任教育，视频资源增强互动。助力学生提升语篇分析与写作能力，为教师提供系统教学支架，便于高效开展同步教学。高一学生处于初高中过渡阶段，需培养逻辑思维与英语综合运用能力，此资料能帮助其夯实阅读基础，提升学习效率。

How Do Pesticides Affect the Environment？ 高一时文阅读 杀虫剂如何影响环境？ CONTENT 01 Lead in 02 Pre-reading 03 While-reading 04 Post-reading 05 Language Points 06 Homework Part 01 Lead in What are the advantages and disadvantages of pesticides? How to reduce the effects of pesticides? Part 02 Before-reading Part 03 While-reading 走进语篇 农药是控制或杀死害虫的物质，是现代农业和公共卫生的基石。虽然它们在提高作物产量和控制病媒方面带来了好处，但它们的广泛使用带来了复杂的环境后果。 ①Pesticides, substances designed to control or kill pests, are a cornerstone of modern agriculture and public health initiatives. While they offer undeniable benefits in terms of increased crop yields and disease vector control, their widespread use comes with a complex web of environmental consequences. ②One of the most significant environmental concerns associated with pesticides is their potential to contaminate water resources. Pesticides can leach into groundwater, surface water bodies like rivers and lakes, and even accumulate in wetlands. This contamination can occur through various pathways: Heavy rainfall or irrigation can carry pesticides from agricultural fields into nearby water systems. This runoff, laden with chemicals, can directly pollute rivers, streams, and ponds. The impact is particularly severe when pesticides are applied close to water bodies or during periods of heavy precipitation. ③Pesticides can percolate through the soil and reach the groundwater aquifers. This is especially problematic in areas with sandy or porous soil, where pesticides are more easily transported. Groundwater contamination is a serious concern as these aquifers are often used as a source of drinking water. The persistence of some pesticides in the soil further compounds the problem, making long-term groundwater contamination a significant threatthe fight against climate change. ④During pesticide application, a portion of the spray can be carried by wind beyond the target area, a phenomenon known as spray drift. This drifting spray can contaminate adjacent water bodies, natural habitats, and even residential areas, exposing non-target organisms to harmful chemicals. ⑤The presence of pesticides in water bodies can have numerous detrimental effects on aquatic ecosystems. They can be toxic to fish and other aquatic organisms, disrupting the food chain and leading to declines in biodiversity. Pesticide contamination can also affect the quality of drinking water, potentially posing health risks to humans. Furthermore, pesticides can accumulate in sediments, where they can persist for long periods, continuing to release contaminants into the water column and impacting benthic organisms. 语篇类型 语篇内容 语篇结构模式 段落大意 Part 1: 1 Part 2: 2-4 Part 3: 5 说明文 Pesticides, while essential tools in modern agriculture and disease control, pose significant environmental risks. General-special-General Introduction: It introduces the topic of pesticides. Conclusion: The presence of pesticides in water bodies can have detrimental effects on aquatic ecosystems. It narrates pesticide contamination of water resources. 牛刀小试 1. What is the primary function of pesticides as described in the text? A. To enhance soil nutrients for plant growth B. To purify water in agricultural areas. C. To control or eliminate harmful pests. D. To increase rainfall for crop irrigation. C To control or eliminate harmful pests. 　 农药是控制或杀死害虫的物质，是现代农业和公共卫生举措的基石。 细节理解题 ① Pesticides, substances designed to control or kill pests, are a cornerstone of modern agriculture and public health initiatives. 2. How can pesticides contaminate water resources? A. Only through direct dumping into rivers. B. Through runoff, leaching, and spray drift. C. Only by evaporating into the air. D. By increasing water temperature. ② One of the most significant environmental concerns associated with pesticides is their potential to contaminate water resources. Pesticides can leach into groundwater, surface water bodies like rivers and lakes, and even accumulate in wetlands. B Through runoff, leaching, and spray drift. 与农药有关的最重要的环境问题之一是它们可能污染水资源。农药可以渗入地下水、地表水，如河流和湖泊，甚至在湿地中积累。 推理判断题 牛刀小试 ③ Groundwater contamination is a serious concern as these aquifers are often used as a source of drinking water. 牛刀小试 3. Why is groundwater contamination particularly dangerous? A. It accelerates pesticide breakdown. B. It reduces pesticide effectiveness. C. It only affects sandy soil regions. D. Groundwater is a major source of drinking water. D Groundwater is a major source of drinking water. 地下水污染是一个严重的问题，因为这些含水层经常被用作饮用水的来源。 细节理解题 4. How can pesticides impact aquatic ecosystems? A. By increasing oxygen levels in water. B. By promoting the growth of beneficial algae. C. By harming fish and disrupting food chains. D. By speeding up the water flow in rivers. ⑤ The presence of pesticides in water bodies can have numerous detrimental effects on aquatic ecosystems. They can be toxic to fish and other aquatic organisms, disrupting the food chain and leading to declines in biodiversity. C By harming fish and disrupting food chains. 水体中杀虫剂的存在会对水生生态系统产生许多有害影响。它们可能对鱼类和其他水生生物有毒，破坏食物链，导致生物多样性下降。 推理判断题 牛刀小试 Part 04 Post-reading Thinking Watch a video. Then talk: What are the bad effects of pesticides？ Thinking Watch a video. Then talk: What are the bad effects of pesticides？ measures Affect biodiversity Kill insect pollinators Pollute groundwater …… Part 05 Language points 1. substance /ˈsʌbstəns/ 2. initiative /ɪˈnɪʃətɪv/ 3. contaminate / kənˈtæmɪneɪt/ 4. leach /liːtʃ/ 5. irrigation /ˌɪrɪˈɡeɪʃ(ə)n/ 6. problematic /ˌprɒbləˈmætɪk/ 7. adjacent /əˈdʒeɪs(ə)nt/ n. 物质，材料 n. 措施，倡议 v. 污染，弄脏 v. 过滤，滤去 n. 灌溉；冲洗（尤指伤口） adj. 成问题的，有困难的 adj. 邻近的，毗连的 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 substance, initiative, contaminate, leach, irrigation, problematic, adjacent 1. Nutrients cannot be recycled and ______________ from the soil. 2. A drug is a chemical _____________. 3. The schools were ____________ but there were separate doors. 4. Belt and Road _____________ will have a very positive effect on the world. 5. We are deeply concerned to get out of this _______________ situation. 6. Hostile relationships invidiously ____________ our wellbeing. 7. The rivers merge just north of a vital_____________ system. leach substance adjacent Initiative problematic contaminate irrigation 长难句分析 Groundwater contamination is a serious concern as these aquifers are often used as a source of drinking water. 句子主干： Groundwater contamination is a serious concern. 参考 译文 地下水污染是一个严重的问题，因为这些含水层经常被用作饮用水的来源。 主语 原因状语 Part 06 Homework 你校将举办一场征文活动，作文标题是：What Are the Effects of Pesticides? 内容要求如下： 1.杀虫剂的用途； 2.相关危害性； 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。 What Are the Effects of Pesticides? ____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ Homework 24 参考范文 What Are the Effects of Pesticides? Pesticides are widely used in agriculture to kill pests and protect crops, ensuring higher yields. They help farmers control insects, weeds, and diseases, contributing to food security. However, pesticides also bring serious harm. Overuse can pollute soil and water, harming ecosystems. They may also endanger human health, causing illnesses like cancer or respiratory problems. Additionally, pesticides can kill beneficial insects, such as bees, disrupting biodiversity. In my opinion, while pesticides are useful, their risks cannot be ignored. We should reduce reliance on them by adopting natural pest control methods and using pesticides more responsibly. Balancing benefits and safety is key to sustainable agriculture. 25 Thank you for your listening Lavf58.20.100 $