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

Using Language Evaluate chemical farming and organic frming CHEMICAL VERSUS ORGANIC FARMING 化学耕作和有机耕作 versus prep (缩写vs., v.) （比赛或诉讼中）对、诉， 对抗； 与...相对、相比 What can be used to make plants grow better? Fertilizer. Chemical fertilizers Natural waste from animals To protect the crops, farmers have to kill off the harmful pests. What is used for killing pests, especially insects? Pesticides. bacteria and insects prohibited damage they use grow too fast nutrition natural waste from animals every year different depths demand for food around the world change the kind of crop D A C B Read and Think (organization ) Title Text type: Argumentative Writing 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 Para.1 1.Why did many farmers welcome the introduction of chemical farming? A. They can fight crop disease and increase production. B. They harm both the land and people’s health. C. They can help produce rich soil. D. They are not expensive. Chemical pesticides and artificial fertilisers have been in widespread use in farming since(自从)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 people’s health. 1. in widespread use 在广泛使用中 2. introduce:推行；实施；采用 3. a great way to do sth. 做…事情的一个好办法 4. fight crop disease 抵制作物病害 5. incease production 增加产量/ boost yields/ expand/increase output 6. over time 随着时间的流逝 in the past+天/周/月/年 7. long-term use 长期使用 Para.1 2. What concerns many people about the use of pesticides? A. Pesticides can damage the land. B. Chemicals can stay in the soil for a long time. C. Pesticides can kill harmful bacteria and insects. D. Chemicals may make people ill and even cause cancer. 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. In fact, some pesticides like DDT have been prohibited in most countries because of the damage they cause to people and the environment. Para.2 3. What is one problem with the use of chemical fertilisers? Crops grown with them usually grow too fast to be rich in nutrition. Para.2 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. In fact, some pesticides like DDT have been prohibited/banned 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. 1. damage the land 破坏土地 2. in addition 再者 3. underground water sources 地下水资源 4. in turn 相应地；转而；依次 5. as for 至于，常位于句首，用以转换话题。 6.too +adj +to do 太…以至于不能 7.be rich in nutrition 营养丰富 8. essential minerals 重要的矿物质 9. have less flavour 口感不佳 Para.2 (1)take turns to do/in doing sth. 轮流做某事 It’s one’s turn to do sth. 轮到某人做某事了 by turns轮流地，交替地 (2)It turns/turned out that...结果是...; 原来是.... in return for作为对……的回报 1. in turn 相应地；转而；依次 11 2．essential adj. 完全必要的；必不可少的；极其重要的 同义词：vital/ crucial eg: The words are essential for everybody to learn English. It is essential that you get a visa/ passport before you travel to the USA． password 归纳总结 be essential to/for对……很重要 It is essential/necessary that… (should) do… 做……是完全必要的。 It is essential for sb. to do… 对某人来说做……是完全必要的。 4. How is organic farming different from chemical farming? Organic farming is simply farming without using any chemicals. Organic farmers focus on keeping their soil rich and free of diseases through natural means. Para.3 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. 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. 1. as an alternative 作为一个替代品 2. switch to/turn to 转向，转变 3. local grocery 当地的杂货铺 4. focus on 聚焦于...;集中于... 5. through natural means 通过天然的方法 6. keep...free of/from 使...免受...伤害（或影响等） Para.3 14 3. alternative n.可供选择的事物 adj 可供替代的 adv. 可供选择地 alternatively I had no money, so I had no alternative but to stay at home. You have the alternative of speaking or keeping quiet. 归纳总结 ① have no alternative but to do sth. ＝have no choice but to do sth. 别无选择只能做某事 ② have the alternative of doing sth拥有做……的选择 ③ an alternative to ..... 的替代品 15 5. Why do organic farmers change the kind of crop grown in a field every year? A. It helps put important minerals back into the ground. B. It can avoid damage to the environment. C. It can help increase output. D. The writer didn’t tell us. Para.4 6. What is the goal of using organic farming methods? 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 Para4 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. 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. 1. for instance /for example 例如，比如 2. plant diverse crops 种植多种作物 3. differnt depths of soil 不同的土壤深度 4. put down roots 生根；定居 5. The goal of doing ...is to do 目的是做... 6. avoid damage to...避免对...的伤害 Para.4 18 Why different crops are grown is because they put important minerals back into the ground, making it ready for the next batch of crops. 为什么要种植不同的作物，是因为他们把重要的矿物质放回地里，让它为下一批作物做好准备。 这是一个主从复合句。Why different crops are grown是why引导的主语从句；is是系动词；because they put important minerals back into the ground在句中作表语，是表语从句。 making it… 为现在分词短语作结果状语，表示前面的情况所造成的结果 19 (1)in depth全面，深入，详细 at a depth of… 在……的深处 (2)deep adj. 深的　adv. 在深处，至深处，深深地 be deep in thought陷入深思 deeply adv. 很，非常；强烈地，深刻地 deepen vi. & vt. 加深，(使)变深　vt. 增长(知识)，加深(理解) 4. depth n. 向下(或向里)的距离；深(度) adj. high wide long strong broad n. height width length strength breadth v. heighten widen lengthen strengthen broaden 20 7. Why can't we stop the use of man­made chemicals in agriculture entirely? A．Organic farming costs us a lot of money. B．Organic farming can meet people's need. C．Chemical farming brought us huge profit. D．Chemical farming helps serve the need for food. 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 Para5 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. 1. prefer to do 更愿意做… 2. man-made chemicals 人造农药 3. entirely全部地；完整地；完全地 =completely 4. serve/meet /satisfy the demand (s)for 满足对...需要 serve vt 对...有用，能满足...需要 4. nowhere near 远没有；远不及 5. there is still a long way to do 做…还有很长一段路要走 6.sufficient food 足够的食物 Para.5 22 1.①in　②to construct　③to do　④by　⑤took turns in/at　 ⑥It’s your turn 2.①to/for　②to get　③(should) be made　 ④It is essential that effective measures(should) be taken to protect our civil rights. 3.①Alternatively　②but　③alternatives　④to　⑤had/has no alternative/choice but 4.①at　②deeply　③depths　④Deep down 课文二次开发 1.a　2.Recently　3.unhealthy　4.caused 5.simply　 6.keeping　7.of/from　8.natural 9.year　10.and What is your opinion on chemical or organic farming? Discussion chemical farming organic farming advantages disadvantages fight crop disease increase production lower cost crops look beautiful outside ...... good food avoid damage to the environment or to people's health ...... harm the land harm people’s health harm the environment crops are less in nutrition ...... cannot meet the demand for food more efforts and higher cost smelly gases ...... 写作专项指导 Write an argumentative essay on farming 文本解读 1.文本类型：议论文。 2.要点内容: ①化学种植和有机种植的不同种植方法; ②化学种植和有机种植对环境的不同影响。 Practice and production 假设你是李华,最近,你校校报英语专版在征集主题为 “Chemical Farming or Organic Farming”的文章,请你写一篇支持开展有机农业的文章去投稿。内容包括: 1.有机农业的优点及理由; 2.化学农业的危害; 3.总结自己的观点。 注意: 写作词数应为100左右。 审题谋篇 Argumentative Structure: Topic (your idea) Supporting evidence Conclusion Use your outline to write a short essay giving your opinion on the topic. 29 Passagetiona 1.我更喜欢有机农业, 因为它在食品质量和环境保护方面具有可持续的前景。 In my opiniopn, 　 　　　 farming is preferable to ________farming because it has a sustainable prospect in________________________________. 2.一方面,有机耕作的农民尽量避免使用化学杀虫剂和化肥来帮助农作物生长。因此，食物和环境中不会残留有害化学物质。 One the one hand, organic farmers try to avoid using ____________ and_________ to help crops grow. 　_________, there are no harmful chemicals _________ the food or the environment. 3.此外，有机耕作的农民注重通过天然的手段保持土壤肥沃和抵制作物病害。例如，他们使用天然的牲畜粪便作为肥料，使农田土壤富含矿物质，也避免化学品进入空气、土壤、水源和作物。 In addition, organic farmers focus on keeping their soil rich and free of disease through natural means. For example , they use natural waste from animals to keep their soil richer in minerals and the air, soil, water, and crops free of chemicals. organic chemical food quality and environmental protection. chemical pesticides fertilizers stayed in As a result 4.另一方面, 化学耕作危害土地、人们的健康和环境。例如， 化学物质残留在土壤、地下水和食物中，从而影响农作物、动物和人类，并导致癌症和其他疾病。 On the other hand, chemical farming harms/ damage the land, people’s health and the environment. For example, chemicals stay in the soil, underground water sources and food supply, thus affecting crops, animals, and humans and leading to cancer or other illnesses. 5.另外，用化肥生长的作物生长过快而营养不足。此类作物外表靓丽，而内里却经常是水分多于必需矿物质，并且往往口感较差。 Besides, 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. 6. 总之,为了人类和环境的健康,有机农业是一个更明智的选择。 In conclusion, organic farming is a wiser choice for the health of both people and environment. $$