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

Period 3 Using Language Learning aims 1. To learn the main idea of the text. 2. To learn the necessary parts of an argumentative essay. 3. To learn useful language points. 4. To learn expressions of giving opinions. Leading-in VS Rural life Urban life What concerns many people about the use of pesticides? 2. How is organic farming different from chemical fertilisers? 3. What is the goal of using organic farming methods? Their long-term use can sometimes harm both the land and people’s health. Farming without using any chemicals. Farmers focus on keeping their soil rich and free of diseases through natural means. Grow good food while avoiding damage to the environment or to people’s health. Reading Comprehension Fast reading Careful reading Part 1 : para1 & para2 Part 2 : para 3 Part 3: para 4 Part 4: para 5 The problems with chemical farming What organic farming is Organic methods for producing rich soil Why man-made chemicals are still used in farming 1. Try to summarize the main idea of each part. Part 1 : Part 2&para 3 Part 4&para 5 Pesticides can kill helpful_ Some pesticides have been _ because of the_ Crops grown with chemical fertilisers usually _ to be full of_ . bacteria and insects prohibited damage they caused grow too fast nutrition Many organic farmers use_ as fertiliser. natural waste from animals They often_ grown in each field _They also plant crops that use _of the soil to help keep it rich. change the kind of crop every year different depths Organic farming is nowhere near able to meet the high _ demand for food around the world 2. Fill in the blanks. Chemical pesticides and artificial fertilisers have been in widespread use in farming 1. the middle of the 20th century,but scientists found that their long-term use can sometimes 2. harm to both the land and people’s health. In most 3. (country),some pesticides like DDT have been prohibited because of the damage 4. (cause) to people and the environment. 5. (solve) the problem, some farmers have switched to organic farming. They use natural waste from animals as fertiliser instead 6._ artificial fertilisers. 3. Read the passage again and fill in the blanks. since do countries caused To solve of By doing so, they make the soil in their fields 7._(rich) in minerals than before. Many other methods are also used to produce rich soil. Farmers often change the kind of crop grown in each field every year. In this way, some important minerals 8._(put) back into the ground. Some people would prefer to stop the use of man-made chemicals in agriculture 9 ._ (complete), but organic farming can’t serve the high demand for food around the world. So scientists have to find a suitable solution 10._the problem. completely to are put richer 1.digest vt.& vi.消化 vt.领会;领悟 (2023 全国乙卷)Within weeks, it had all been digested, and all that was left was pure water. 几周之内,它就被消化了,只剩下纯净水。 digestion n. 消化;领悟 digestive adj. 助消化的 【即学即练】 (1) Nutrients from the _ (digest) food can be absorbed into the blood. (2)Large meals overload the _(digest) system. 【知识拓展】 digested digestive Language points 2.essential adj.完全必要的;极其重要的 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. 它们可能外表看起来很漂亮,但里面通常有更多的水,而不是必要的矿物质,而且它们的味道通常也更差。 be essential to/for 对……是必要的 It is essential that ...(should) do做……是必要的 It is essential to do ... 做……是必要的 【知识拓展】 【即学即练】 (1) (2021 天津高考)Participating in the arts is essential _ child development; encouraging children to express themselves in constructive ways could help to form healthy emotional responses in later life. (2)It is essential that every child _(have) the same educational opportunities. (3)It is essential _(set) your goal before you do anything. for should have to set 3. alternative n.可供选择的事物 adj.可供替代的;非传统的 (2022 全国乙卷)There are alternatives to constant written communication, such as leaving voice messages or having a group chat. 除了持续的书面交流,还有其他选择,比如留下语音信息或进行群聊。 【知识拓展】 an alternative to ……的替代物(to是介词) have no alternative but to do sth. 别无选择只好做某事 have the alternative of doing sth. 有做某事的选择 【即学即练】 (1) The Internet also provides us with a cheap alternative to _(communicate) with others. (2)(2021 天津高考)It's a good idea to choose _ alternative destination, in case your first-choice tourist spot is not available. (3) If you don't like the school lunch, you will have the alternative of _(bring) your own. communicating an bringing 4. instance n.例子;实例;事例 (2023 新高考I卷)For instance, the average obtained from the estimates of four discussion groups of five was significantly more accurate than the average obtained from 20 independent individuals. 例如,从四个五人讨论组的估计中获得的平均值明显比从20个独立个体获得的平均值更准确。 for instance例如 in this instance在这种情况下 【即学即练】 (1) _this instance I think she was mistaken. (2)He's a brave boy; _instance, he saved a little girl by jumping into the cold river. In 【知识拓展】 for Writing 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.作出该选择的理由。 注意: 1.词数80左右; 2.可以适当增加细节,以使行文连贯; 3.开头语已给出,不计入总词数。 In my opinion, farming is preferable to farming because... 1. 思路点拨 An argumentative essay 主题 农业 体裁 议论文 人称 第一人称、第三人称 时态 一般现在时 布局 第一段:表明观点,认为有机农业好(或化学农业好)。第二段:写明自己选择的理由。以有机农业为例:1.对环境友好;2.对健康有益;3.促进食欲。第三段:再次肯定自己的观点,与首段相呼应。 2. 遣词造句 (1)遣词 ① adj.与化学有关的;化学的 ② nutrition n. _ ③ adj.完全必要的;极其重要的 ④mineral n. _ ⑤ n.味道;特点;特色 chemical 营养;滋养 essential 矿物;矿物质 flavour (2)造句 ①我们应该尽自己所能来保护脆弱的环境。 We should_to protect the delicate environment. ②患癌症的人数在上升,我们要更注意吃的东西。 The number of people_is on the rise and we should pay more attention to our food. ③不含化肥的有机农业,旨在使土壤肥沃,对环境无疑是友好的。 _keep the soil rich, organic farming, which_chemical fertilisers, is undoubtedly friendly to the environment. do everything in our power diagnosed with cancer Intended to is free of ④有机食物富含矿物质和维生素,它能确保我们摄入必要的营养,并且减少了患潜在的严重疾病的可能性。 Organic food_minerals and vitamins. It guarantees us the essential nutrition and reduces the likelihood of potential serious disease. ⑤我们都知道化学农业生产出来的食物吃起来没有味道。 We all know that food_from chemical farming_. is rich in produced tastes flavorless 3.连句成篇 In my opinion, organic farming is preferable to chemical farming because it has some outstanding advantages. The following are my reasons. First of all, we should do everything in our power to protect our delicate environment. Organic farming, with no chemical fertilisers, can keep the soil rich. As a result, it's sure that organic farming is good to the environment. With more and more people diagnosed with cancer, we should pay more attention to our food. Organic farming produces food full of minerals and vitamins, which is nutritious. The better food we eat, the less likely we are to develop disease. Lastly, all of us know that food produced in the traditional chemical way tastes bad. However, organic food is more delicious, which helps us have a good appetite. In a word, I think organic farming is better. 词汇 清单 核心短语 应用词汇:1.digest: digestion n.; digestive adj. 2. essential : be essential to/for,It is essential that ...(should) do, It is essential to do ... 3.alternative: an alternative to..., have no alternative but to do sth., have the alternative of doing sth. 4.instance: for instance;in this instance in turn, over time, for instance, focus on, keep...from..., have no impact on, conduct a research, set up, carry out, separate...from 认知词汇:fertiliser, flavour;alleviate, poverty, pesticide, bacterium 拓展词汇:chemical chemistry,nutrition nutritional nutritious;organic organically; depth deep deepen Summary 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.(as...as possible) 重点句式 1.(2023 全国乙卷)They also remove some harmful _(化学物质) from paints or cooking. 2.The elderly and children are having a hard time in the_(最深处) of winter. 3.Plants in desert usually have long_(根). 4.The government has taken measures to help people get rid of_(贫穷). 5.(2023 新课标II卷)A new study shows that wildness in u_ areas is extremely important for human well-being. Exercise depths rban chemicals poverty roots 6.Computers are now in w_ use all over the world. 7.O_ food, which is green and healthy, is on sale at the local grocery. 8.(2023 全国乙卷)However, we did not mark the route (路线) so we ended up almost missing the sunset e_(完全地). 9.Foreigners tend to be impressed with the spicy f_ of Sichuan dishes. idespread rganic ntirely lavour All things in their being are good for something. 天生我材必有用。 $$