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

课题：Unit5 Using Language—Evaluate chemical farming and organic farming Unit5 Working the Land Reading for writing * Lead in PART 1 * It is fertilizer. chemical farming organic farming chemical farming organic farming * By the end of this class, you will be able to: To understand the differences between chemical and organic farming and their advantages and disadvantages; To learn about the structure of argumentative essay; To write a paragraph to express your views on chemical farming or organic farming. Understand the significance of sustainable agricultural development from the perspective of the community of human destiny. Learning objectives * Pre-writing PART 2 * Read for the structure Title Topic 1: chemical farming Topic 2: organic farming Conclusion What is chemical farming? What is organic farming? Chemical farming is farming with _________ , especially __________ _________ and __________________. Organic farming is simply farming _________________. chemicals chemical pesticides artificial fertilizers without chemicals an expository essay(说明文） 小标题 * 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 what benefits problems what benefits problems Farming with chemicals, especially chemical pesticides and artificial fertilizers Farming without chemicals makes the soil richer in minerals keeps the air, soil, water and crops free of chemicals, avoid damage to the environment or to people’s health. Read for the detailed information Chemical pesticides and artificial fertilizers 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 people’s health. Paragraph 1 contrasting Paragraph 2 For example, pesticides can damage… but also helpful ones. In addition, these chemicals … for a long time. This affects the crops … and, in turn, the animals and humans who digest them. In fact, some pesticides like DDT … As for chemical fertilizers, … They may look beautiful on the outside, but inside … and they often have less flavor as well. explaining/ supporting a point adding more information contrasting Read for linking words Paragraph 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 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 fertilizer. This makes the soil in their fields richer in minerals. It also keeps the air, soil, water and crops free of chemicals. explaining/ supporting a point adding more information Paragraph 4 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 … Organic farmers also plant diverse crops that use different depths of soil to help keep it rich. For example, peanuts … explaining/ supporting a point Paragraph 5 ...Therefore, there is still a long way to find a suitable solution ... stating a conclusion Summary however, but therefore, in conclusion also, but also...,in addition, and…as well as an alternative for example, for instance Signposts (Words to show transitions) Function contrasting explaining or supporting a point introducing a new topic/thing adding more information stating a conclusion Thinking What is the author’s attitude towards organic and chemical farming? A.Negative B. ambiguous C. objective D. supportive What is your opinion on chemical or organic farming? Write an angumentative passage in the next period. brainstorm express your opinions: In my opinion… I’d prefer... / I’d like... From my point of view... How to write an argumentative essay? chemical farming Thinking organic farming advantages disadvantages fight crop disease increase production lower cost crops look beautiful outside ...... good food avoiding 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 ...... brainstorm express your opinions: In my opinion… I’d prefer... / I’d like... From my point of view... How to write an argumentative essay? While-writing PART 3 * Write an argumentative essay giving your opinion on chemical or organic farming. Para. 1 Para.2-4 Para. 5 * Outline writing There is a wide concern over the issue about_________________. In my opinion/_______, ________ farming is preferable to________ farming . Because it _________, for example_______. Moreover/_______，____________. However, as for ________ farming,_________________. _In conclusion/________ , I hold the belief that_________farming brings us more advantages and is more _________________________. Topic at least 2 advantages Summary & Your opinion Let’s show your work. After writing PART 4 * Checklist for your writing 01 Does the writer do a good job of expressing his/her opinion? 02 Does each paragraph have one main idea? 03 Is each main idea supported with sufficient details? 04 Is the writing convincing? 05 Are the spelling and grammar correct? Homework 为积极响应学校英语广播栏目《健康膳食》的征稿活动，请根据以下要点写一篇议论文投稿，说明有机农耕的好处： 1．有机农产品更健康，让人放心； 2．有机农耕对环境不造成破坏； 3．有机农耕让农民增加收入。 注意： 1. 词数80左右； 2. 可以适当增加细节，以使行文连贯。 Compulsory Optional Be an investigator. After class, conduct a questionnaire on passers-by about their opinions and attitudes towards organic food. Sustainable development Shared future $$