Unit 5 Working the Land Using language Reading for Writing 课件-2024-2025学年高中英语人教版（2019）选择性必修第一册

Chemical Versus Organic Farming Evaluate chemical farming and organic farming Unit5 Working the Land Reading for Writing Learning Objective To understand the differences between chemical and organic farming and their advantages and disadvantages; To learn about the structure of argumentative essay; To write an essay to express your views on chemical farming or organic farming. contents Lead-in Ⅰ Writing Reading Ⅱ III 4 Ⅰ Lead-in Lead in What makes plants grow better? Chemical fertilizers Natural waste from animals 6 docerID:4610637 To protect the crops, farmers have to kill off the harmful pests. Farmers will use pesticides to kill pests or insects. Chemical Farming Organic Farming Organic farming is simply farming without using any chemicals. 8 Which tomatoes do you prefer? 5 yuan / kg 30 yuan / kg Normal tomatoes Organic tomatoes 9 Chemical Farming Versus Organic Farming 10 Ⅱ Reading Reading Read for stucture Skim the passage and match the main ideas (A-D) with the paragraphs. A What organic farming is B Why man-made chemical are still used in farming C Organic methods for producing rich soil D The problems with chemical farming Para1-2 Para3 Para4 Para5 Chemical pesticides and artificial fertilisers have been in widespread use in farming since the middle of the 20th century. When they were first introduced, many farmers welcomed them as a great way to fight crop disease and increase production. Over time, however, what some scientists have found is that their long-term use can sometimes harm both the land and peoples’ health. Chemical Versus Organic Farming Para 1 自20世纪中叶以来，化学农药和人工肥料在农业中得到了广泛的应用。刚开始使用的时候，很多农民都很欢迎，认为这是防治作物病害和提高产量的好办法。但随着时间的推移，一些科学家发现，长期使用它们有时会损害土地和人们的健康。 农药 人工的 肥料 广泛的 在应用中 做某事的方法 随着时间的推移 长期的 1.Why did many farmers welcome the introduction of chemical farming? Para1: What chemical farming is. For example, pesticides can damage the land by killing not only harmful bacteria and insects, but also helpful ones. In addition, these chemicals can stay in the soil and underground water sources for a long time. This affects the crops grown on the land and, in turn, the animals and humans who digest them. Many people worry that these chemicals may make them ill and even cause cancer. 例如，农药不仅会杀死有害的细菌和昆虫，还会杀死有益的细菌和昆虫，从而破坏土地。此外，这些化学物质会在土壤和地下水源中停留很长时间，这会影响到土地上种植的作物，进而影响到消化这些作物的动物和人类。很多人担心这些化学物质会让他们生病，甚至致癌。 Para 2 不仅...而且... 细菌 昆虫 除此之外 长期 相应的 消化 2. What concerns many people about the use of pesticides? In fact, some pesticides like DDT have been prohibited in most countries because of the damage they cause to people and the environment. As for chemical fertilisers, crops grown with them usually grow too fast to be rich in nutrition. They may look beautiful on the outside, but inside there is usually more water than essential minerals, and they often have less flavour as well. 事实上，一些杀虫剂，如DDT，由于对人和环境的破坏，大多数国家已经禁止使用。至于化肥，使用化肥种植的农作物通常生长过快，营养不丰富。但里面通常含有更多的水分而不是必需的矿物质，而且它们的味道往往也较差。 Para 2 阻止 事实上 至于 太...而不能... 营养 富含 必要的 矿物 口感，味道 也 Para2: Examples of the harm. 3. What is one problem with the use of chemical fertilisers? As an alternative, some farmers have switched to organic farming, and many customers have turned to organic food when they shop at the local grocery. Organic farming is simply farming without using any chemicals. Organic farmers focus on keeping their soil rich and free of disease through natural means. Para 3 作为一种选择，一些农户已经改用有机耕作，许多顾客在当地杂货店购物时也转而选择有机食品。有机耕作就是不使用任何化学品的简单耕作。有机农户专注于通过自然手段保持土壤肥沃和没有疾病。 可供替代的 转向... 转向 食品杂货店 集中于... 使...摆脱 4. How is organic farming different from chemical farming? For example, many organic farmers use natural waste from animals as fertiliser. This makes the soil in their fields richer in minerals. It also keeps the air, soil, water, and crops free of chemicals. Para 3 例如，许多有机农民使用动物的天然废物作为肥料。这使得他们田地里的土壤含有更丰富的矿物质。它还能使空气、土壤、水和农作物不含化学物质。 Para3: What organic farming is. Organic farmers also use many other methods to produce rich soil. They often change the kind of crop grown in each field every year. For instance, they may grow corn or wheat in a field one year, and then grow beans there the next. Why different crops are grown is because they put important minerals back into the ground, making it ready for the next batch of crops. Para 4 有机农民还使用许多其他方法来培养肥沃的土壤。他们经常改变每年在每块田里种植的作物种类。例如，他们可能会在某块田里种植玉米或小麦，然后在第二年种植豆类。为什么要种植不同的农作物，是因为他们把重要的矿物质释放回地里，让它再次为下一批农作物做好准备。 5. Why do organic farmers change the kind of crop grown in a field every year? 例如 Organic farmers also plant diverse crops that used different depths of soil to help keep it rich. For example, peanuts grow on the ground’s surface, but many other vegetables put down deep roots. The goal of using different organic farming methods is to grow good food while avoiding damage to the environment or to people’s health. Para 4 有机耕种的农民还种植多样化的作物，利用不同深度的土壤来帮助保持土壤的肥沃。例如，花生生长在地表，但许多其他蔬菜却把根扎得很深。使用不同的有机耕作方法的目的是种植好的食物，同时避免对环境或人们的健康造成损害。 Para4: 深度 根茎 避免对...的损害 Organic methods for producing rich soil. 6. What's the goal of using organic farming methods?Do you think it can be reached? Some people would prefer to stop the use of man-made chemicals in agriculture entirely. What keeps them from doing so is the fact that chemical farming serves the high demand for food around the world. Organic farming is nowhere near able to meet that need. Therefore, there is still a long way to find a suitable solution that puts sufficient food on the dinner table while keeping people and the environment as healthy as possible. Para 5 有些人希望在农业中完全停止使用人造化学品。阻止他们这样做的原因是，化学农业服务于全世界对食物的高需求。有机农业远远不能满足这种需求。因此，要找到一个合适的解决方案，既能让餐桌上有足够的食物，又能让人们和环境尽可能地保持健康，还有很长的路要走。 Para5: Why man-made chemicals are still ues in farming. 宁愿做某事 完全地 阻止...做某事 能满足...的需求 需求 远不及，完全没有 尽可能...地 Reading Read for stucture Skim the passage and match the main ideas (A-D) with the paragraphs. A What organic farming is B Why man-made chemical are still used in farming C Organic methods for producing rich soil D The problems with chemical farming Para1-2 Para3 Para4 Para5 Farming Benefit Problem Solution Chemical farming Organic farming The author uses “Benefits — Problems — Solutions” to introduce chemical farming and organic farming. Finish the table according to the passage. fight crop disease and increase production sometimes harm both the land and people’s health switch to转换 organic farming make the soil rich; keep the air, soil, water and crops free of chemicals cannot meet the need still a long way to find a suitable solution Read for details Read and Think (organization ) Title Text type: Exposition The _______ and _________ of chemical farming. benefits problems Part 1: (Para 1&2) What organic farming is and __________________. how it keep the soil rich Part 2: (Para 3&4) Part 3: (Para 5) Conclusion Homework P58 exercises 1,2 Ⅲ Writing Write an argumentative essay giving your opinion on chemical or organic farming. 发表议论就是通过议论或说理来表达作者的见解和主张，作者对某一问题持有一种看法，为了使读者同意自己的看法，提出若干理由，试图说服别人。 发表议论时，我们要注意三个要素：论点、论据、论证。 该类（议论文）文章一般分为三部分： 第一部分：开门见山，说明自己的看法或观点； 第二部分：列举支持方的观点及其理由；或列举反对方的观点及其理由；(可分段列举) 第三部分：得出结论或给出自己的观点。 主题写作——绿色生活 1.写作任务 假如你是李华，你将参加主题为“Let’s Ride Bicycles”的英语演讲比赛。请你撰写一份演讲稿，内容主要包括： ①汽车带来的空气污染问题； ②骑自行车的益处，如环保、有利于健康等 参考词汇：低碳城市low-carbon city 注意：①词数80左右； ②演讲稿的开头和结尾已给出，不计入总词数。 Good morning,everyone: I am Li Hua.The topic of my speech is “ “Let’s Ride Bicycles”.________________________________________________________ Thank you! 2.写作思路 （1）一审：确定体裁，结构，主题 体裁：应用文—发言稿或演讲稿 主题：介绍你对低碳生活的观点 （2）二定：时态与人称 时态：一般现在时为主 人称：第一人称为主 （3）三明确：明确写作要点 写作目的：介绍倡导低碳生活的原因以及低碳生活的好处 详细内容：①介绍自己和演讲主题 ②介绍提倡低碳生活的原因 ③介绍 低碳生活的好处 ④总结观点 结构：四段 第一段：自我介绍和演讲主题 第二段：提倡低碳生活的原因 （举例1-2） 第三段：介绍低碳生活的好处 （举例1-2） 第四段：总结观点 3.素材整理 （1）关键词语 As is known to all 众所周知 in reality 事实上，实际上 in turn 相应地，进而 tackle ...crisis解决...危机 For one thing一方面 For another 另一方面 （2）完成句子 1.with the improvement of ____________________________ 随着人类生活水平的提高。 2.How to _________________________________? 如何解决环境危机呢？ 3.Bicycles are environmentally friendly. 自行车对环境更加友好。 4.Riding bicycles is __________________________________. 骑自行车有利于身体健康。 people's living standards tackle the environmental crisis beneficial to our health Good morning, everyone, I am Li Hua . The topic of my speech is“Let’s Ride Bicycles”. As is known to all, with the improvement of people's living standards, cars have become a popular means of transport. However, in reality, they emit harmful chemicals and have in turn caused problems like air pollution. How to tackle the environmental crisis? As far as I'm concerned, the bicycle is a good alternative. For one thing, bicycles don't consume any petrol. For another, bicycles are environmentally friendly because they won't generate waste gas. What's more, riding bicycles is beneficial to our health. Therefore, let's take the responsibility to build up a low-carbon city by riding bicycles. Thank you! 佳作赏析 Homework 假定你是李华，最近，你班开展了主题为“Chemical Farming or Organic Farming”的征文活动。请根据以下内容用英语写一篇短文。 1. 你的观点； 2. 做出该选择的理由。 注意： （1）词数80左右； （2）可适当增加细节，以使行文连贯。 （3）开头和结尾已给出，不计入总词数。 In my opinion _________________________________________________________________________________ Writing Brainstorm In my opinion / in my view / in my eyes / as far as I am concerned, organic farming is preferable to chemical farming, because it’s beneficial to both people’s health and the environment, and favorable to sustainable development of agriculture. In my opinion, I agree/am for/be in favor of chemical farming, because it can fight crop decease and increase production, thus serving the high demand for the food around the world. What’s your argument? Thank you null 222629.42 $$