Unit 5 Using language （以读促写课课件）英语人教版选择性必修第一册

该高中英语课件围绕“化学农业与有机农业对比”核心主题，通过“Lead in”环节的偏好及利弊讨论激活学生思考，衔接“Language Building”中的农业主题词块分类、课文精读梳理和名词性从句语法练习，搭建从语言输入到“Mini-writing”句式仿写再到“Writing Task”议论文写作的完整学习支架。 其亮点在于以任务驱动分层培养核心素养，通过词块分类（如化学农业“chemical pesticides”、有机农业“natural waste”）和议论文模板（观点句“In my opinion...”等）提升语言能力，对比分析两种农业利弊锻炼思维品质，结合自评量表和同类巩固作业增强学习能力。学生能系统掌握写作技能，教师可依托完整流程高效开展教学。

Unit 5 Working the Land 高中英语人教版选择性必修第一册 Using language 以读促写 Contents 1. Lead in 2. Language Building 3. Mini-writing 4. Writing Task 5. Self-assessment 6. Homework 01. Lead in Lead in 01 Which farming method do you prefer, chemical farming or organic farming? 02 What are the pros and cons of chemical farming and organic farming? 02. Language Building Language Building 一、课文核心话题词块（农业对比类写作必备） 1. 化学农业相关 2. 有机农业相关 3. 对比总结类 chemical pesticides 化学杀虫剂；artificial fertilisers 人工化肥；increase production 增产；fight crop disease 防治作物病害；long-term use 长期使用；harm the land and health 破坏土地与健康；cause cancer 致癌；be prohibited 被禁止 organic farming 有机农业；natural means 自然方式；natural waste from animals 动物天然粪便；rich soil 肥沃土壤；diverse crops 多样化作物；avoid damage to environment 避免破坏环境；sustainable development 可持续发展 as an alternative 作为替代；meet the high demand 满足高需求；nowhere near 远不能；suitable solution 合适的解决方案 Language Building 二、课文精读习题梳理 1. Read the text and answer the questions. 1. Why did many farmers welcome the introduction of chemical farming? 2. What concerns many people about the use of pesticides? 3. What is one problem with the use of chemical fertilisers? 4. How is organic farming different from chemical farming? 5. Why do organic farmers change the kind of crop grown in a field every year? 6. What is the goal of using organic farming methods? Do you think it can be reached? Why or why not? Because chemical pesticides and fertilisers could help them fight crop disease and increase production effectively. People worry that the chemicals remaining in soil, water and crops may make them ill and even cause cancer. Crops grown with chemical fertilisers grow too fast to be nutritious. They contain more water than essential minerals and taste worse. Organic farming avoids using any man-made chemicals and adopts natural ways to keep soil healthy, while chemical farming relies on pesticides and fertilisers. Different crops can put important minerals back into the ground, making the soil ready for future crops. The goal is to produce safe food without damaging the environment or people’s health. It can be achieved gradually, but it still takes time, for organic farming cannot meet the global food demand at present. Language Building 2. Paragraph main idea matching & detail filling Main Idea: A.有机农业定义 B.化学农业仍被使用的原因 C.有机沃土方法 D.化学农业的弊端 1-2 Paragraph —— D 3 Paragraph —— A 4 Paragraph —— C 5 Paragraph —— B Detail filling 参考答案 1－2：helpful insects; prohibited; damage to people and environment; grow too fast; nutrition 3：natural animal waste 4：change the crop; every year; different depths 5：food demand Language Building 三、语法核心：名词性从句（that/whether/wh-疑问词 Complete the sentences with that, whether, or wh-question words. 1. ________ the research centre is to be set up has not been decided. 2. ________ many countries still face food shortages remains a big problem. 3. ________ impressed me most was that the hybrid rice enabled farmers to expand their output greatly. 4. ________ the plan is to be carried out still needs discussing. 5. ________ the new chemical pesticide is effective remains to be seen. 6. ________ will join in the research team will be announced tomorrow. 7. ________ he quit his high­paying job is not difficult to understand. Whether That What Whether Whether Who Why 03. Mini-writing Mini-writing 句式模板（议论文核心框架） 观点句：In my opinion, ... is more beneficial than ... 论据句1（优势）：The most obvious advantage is that ... 论据句2（弊端对比）：By contrast, ... may cause ... 总结句：Therefore, it is wise for us to choose ... Mini-writing 二、单句仿写练习 1. 用 In my opinion 表达观点：有机农业更环保健康 ______________________________________________________________________________________________________________________________________________ 2.用 The advantages are 阐述化学农业优势 3.用 It’s a pity that 阐述有机农业的短板 ______________________________________________________________________________________________________________________________________________ The advantages of chemical farming are higher crop output and higher efficiency. In my opinion, organic farming is more environmentally friendly and beneficial to people’s health. It’s a pity that organic farming cannot meet the huge global food demand at present. 04. Writing Task Writing Task 一、题目呈现 根据课文内容，以 Organic Farming Is a Better Choice为题，写一篇议论文，对比化学农业与有机农业，阐述你的观点。内容包括： 1. 简述两种农业模式的特点； 2. 对比分析各自的利弊； 3. 阐明自己的观点和理由。 注意： 1. 词数100左右； 2. 观点明确，逻辑清晰，行文连贯； 3. 使用本单元所学观点句型与话题词块。 Writing Task 二、写作提纲 Topic sentence: In my opinion, organic farming is preferable to chemical farming because it ensures long-term environmental and physical health. Point 1: Chemical farming boosts output but damages ecology and health. (Detail: Chemicals kill beneficial insects and remain in soil and crops, causing health risks.) Point 2: Organic farming protects the environment effectively. (Detail: It adopts natural fertilisers and crop rotation to keep soil rich and pollution-free.) Point 3: Organic food is safer and more nutritious. (Detail: Organic crops contain more minerals and taste better without chemical pollution.) Conclusion: Although organic farming cannot meet global food demand now, it is the sustainable future of agriculture. Writing Task _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ ______________________________________________________________________________________________________________________________________________ _______________________________________________________________________ Writing Task Organic Farming Is a Better Choice In my opinion, organic farming is preferable to chemical farming because it guarantees sustainable agriculture and people’s long-term health. Chemical farming relying on pesticides and fertilisers can increase crop output quickly. However, its long-term use damages soil ecology, kills beneficial creatures and leaves harmful chemicals in food, which may cause diseases.By contrast, organic farming uses natural methods to grow crops. It protects soil, water and air from pollution and produces more nutritious and tasty food. Although it costs more and cannot satisfy global food demand at present, it brings no hidden dangers to the environment and human health. From my point of view, organic farming is the future of green agriculture. We should promote it steadily for sustainable development. 05. Self-assessment Self-assessment Total: ____ / 15 一、评分标准（五档25分制） 第五档（很好）(21～25分)： (1) 紧扣化学农业与有机农业对比主题，完整对比两种耕作方式的利弊，观点明确、内容完整，贴合写作要求，行文逻辑严谨，写作任务完成度高； (2) 熟练运用单元农业主题词块与观点表达句型，语法结构准确丰富，语言错误极少，完全不影响语义表达； (3) 自然且有效地使用过渡衔接词汇，文章结构紧凑、层次分明，论点论据呼应，全文语义连贯、主题突出。 Self-assessment 二、写作自评量表 评价维度 评价标准 达标 待改进 未达标 观点表达 观点明确，首尾呼应，使用单元观点句型       内容论证 包含利弊对比，论据充分贴合课文内容       语言运用 熟练使用主题词块、对比句式，语法准确       逻辑衔接 过渡词丰富，段落层次清晰，行文流畅       字数规范 词数控制在100词左右，符合要求     06. Homework Homework 同类巩固 你校英文报正在开展主题为 Green Farming, Better Future 的征文活动，请你结合本单元所学，写一篇英文短文投稿。内容包括： 1. 简述现代农业的两种耕作方式； 2. 对比说明有机农业的优势； 3. 表达对绿色农业发展的展望。 注意： 1. 词数100左右； 2. 可以适当增加细节，以使行文连贯。 _______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ Sample Green Farming, Better Future Modern farming mainly includes chemical farming and organic farming, which have totally different influences on our life and environment. Chemical farming can raise crop output quickly to meet global food needs. However, long-term use of chemicals damages soil quality, pollutes water sources and threatens human health. In my eyes, it is a short-sighted farming method. Without a doubt, organic farming is more sustainable. It uses natural resources to protect soil ecology and produce safe, nutritious food. Though it has limitations in output at present, it is the best choice for long-term agricultural development. I believe green organic farming will create a better future for mankind. Thank you for your listening. $