Unit 3 Period 1 Welcome to the unit & Reading（教学设计）英语译林版2020选择性必修第二册

Unit 3 Fit for life Period 1 Welcome to the unit & Reading教学设计 教学基本信息 单元名称 选择性必修第二册Unit 3 Fit for life 学科 英语 学段 高中 年级 高二第一学期 主要教材 书名：普通高中教科书·英语选择性必修第二册 出版社：译林出版社 出版日期：2021年6月 课时安排 2课时(80min) 课型 精读课 教学设计理念 主题语境引领下的词汇、语法教学，英语学习活动观 1. 以 “基因编辑与人类生活” 为核心主题，整合语言知识与科技伦理内容，通过多模态教学（如 PPT 中的医学职业图片、基因编辑技术流程图）实现视觉与文本的深度融合，帮助学生在真实语境中理解词汇（如genome editing, designer baby）和语篇逻辑。 2. 遵循 “学习理解－应用实践－迁移创新” 三阶设计，从文本解读（如分析基因编辑的利弊）到观点表达（如讨论 “设计婴儿” 的伦理），层层递进培养学生的语言运用能力。 3. 通过小组辩论、观点陈述等活动，鼓励学生主动探究科技与伦理的关系，培养批判性思维、跨文化意识（如对比不同国家对基因编辑的政策）及合作能力。 教材分析 【What】语篇为一篇关于基因编辑技术的说明文（含部分议论），内容围绕基因编辑的原理、应用（如疾病治疗）、争议及未来影响展开，结构清晰（引言－技术原理－应用与争议－结论）。 【Why】通过介绍基因编辑技术的发展与挑战，旨在帮助学生了解现代医学科技，思考科技进步与伦理规范的平衡，提升科学素养与思辨能力。 【How】采用第三人称客观叙述，穿插专家观点与比喻（如将失控的基因编辑比作 “失控的汽车”），语言严谨且生动；标题 “Fit for life” 暗示技术对人类健康的潜在影响，需结合全文解读。 学情分析 1.What I know 词汇方面：学生掌握了一些基础医学词汇（如disease, gene），但对专业术语（如genome, genetic marker）较陌生。 语法方面：学生能理解复合句（如定语从句、状语从句），但对长难句（如含多个插入语的科技说明句）分析能力有限。 背景知识方面：部分学生通过媒体了解基因编辑，但对其技术细节和伦理争议认识模糊。 2.What I want to know 学生不仅渴望了解基因编辑的实际应用（如疾病治疗案例）及与日常生活的关联，而且需要掌握科技类文本的阅读策略（如抓主题句、分析论证逻辑）。他们还希望通过讨论表达对科技伦理的看法，提升用英语辩论的能力。 3. What I learned 主题内容方面：学生将了解基因编辑技术的利弊，形成对科技伦理的理性认知。 语言知识方面：学生掌握identify, prohibit, wrestle with等核心词汇及 play a critical role in等短语，学会撰写科技主题的观点性短文。 教学目标 1.语言能力 解读标题 “Fit for life” 与基因编辑主题的关联，用英语阐释其含义。 运用arise from be restricted to等短语描述基因编辑的应用场景与限制。 2.学习能力 掌握略读（找语篇结构）、精读（析细节论据）等策略，梳理基因编辑的技术原理与争议点。 3.文化意识 对比不同文化背景下对 “设计婴儿” 的态度差异，理解科技发展与社会伦理的关系。 4.思维品质 通过辩论 “基因编辑是否应用于增强健康人体”，培养批判性思维和逻辑表达能力。 教学重难点 教学重点 语言维度：掌握genome editing, resistance等核心词汇，理解 “by means of” “without doubt” 等短语。 阅读与文化维度：分析文本 “提出技术－讨论应用－引发争议” 的结构逻辑。理解科技进步中的伦理边界。 教学难点 语言深度运用：辨析affect与effect, relate与connect等易混词的用法。 拓展提升：用英语清晰表达对 “设计婴儿” 的复杂态度（如支持疾病治疗但反对性状筛选）。 教学资源 课件PPT，黑板、白板。 教学活动设计 教学过程 活动形式及步骤 活动意图 时间 学习理解 Activity 1 Lead in 展示威廉・奥斯勒名言，提问： 1.What does the quotation from William Osler mean? 2. Medical professionals work hard to keep us healthy. Look at the pictures below and match the pictures with options. ●通过名言和图片激活背景知识，引出 “科技与伦理” 主题，为文本学习铺垫。 5 min Activity 2 Pre-reading 1. What advances in medical science have you heard about? 2. What do you know about genes? The future is in our genes. ●通过预测培养推理能力，衔接学生已知的医学知识与课文主题。 5 min Activity 3 While Reading The future is in our genes. 1. Read for structure 2. Read for main idea The main idea of the passage is about ____________. 答案：the possibilities that genome editing can bring 3. Read for details Read Para.2 and answer the following questions. ①Why are genes critical in shaping our lives? 答案：Because everything from the colors of our eyes to our talent for maths depends on genes. ②What information does our personal genome carry? 答案：It carries all the information needed to make us grow and develop. It also contains information that helps determine our lifespan and affects our chances of contracting certain diseases. Read Para.3 and answer the following questions. ①How can genes make changes to the genome? 答案：Geneticists can correct, add, delete or replace specific parts of the genetic material. ②How might genome editing make it possible to prevent disease from developing? 答案：By correcting, adding, deleting and replacing specific parts of the genetic material. Read Para.4-5 and answer the following questions. ①What is a “designer baby”? 答案：A designer baby is a baby whose specific characteristics have been selected before he is born. ②What does the lecturer compare uncontrolled genome editing to? 答案：A car out of control. ③What is the lecturer’s attitude toward genome editing? 答案：Positive. ●通过分层阅读，帮助学生从宏观结构到微观细节逐步理解文本，强化阅读策略。 ●培养学生获取细节信息能力，深入理解课文内容。 2. 引导学生对比分析，找出新闻报道差异，培养学生观察、比较能力。 20 min Activity 4 Post reading 1. Critical thinking The lecturer mentions that one day we will create a “designer baby”, What do you think of designer babies? 2. Discussion Genome editing is one of the greatest inventions in the history of science , and we should put appropriate controls in place to make sure that genome editing will work to our advantage. ●深化对文本主旨的理解，关联视觉信息与文字内容，培养辩证思维。 10 min 应用实践 Activity 5 Language points 详解文章中的重点单词、短语和句型，完成巩固练习。 1、 用所给词的适当形式填空 1. My father used to be an amateur _____(wrestle) and national champion.  2. He hoped she would remove that _____(prohibit) soon.  3. The government placed _____(restrict) on the number of foreign cars that could be imported.  4. Regarding your inquiry, I’m writing to share with you some ______(relate) information.  5. There’s a close _______(identify) between fans and their team.  6. She envied our family atmosphere where our parents showed us much _____(affect).   答案：1. wrestler 2. prohibition 3.restrictions 4. related 5. identity 6. affection 2、 根据所给短语的恰当形式填空 1. _______ classical music, he still reigns supreme. depend on; a wide range of ; serve as; wrestle with; in the field of; be tied to 2. The road ______________ an approach to the mountainous villages. 3. Nobody knew that the boss had spent the whole week ____________ the problem. 4. His success ________ his hard work 5. There is a strong possibility that man will mainly ________ solar energy in the future.  6. Governments need to offer the young __________ options after school. 答案：1. In the field of 2. serves as 3. wrestling with 4. is tied to 5. depend on 6. a wide range of ●通过练习巩固语言知识，实现从输入到输出的转化。 25min Activity 6 Summary 完成语法填空，回顾文章大意。 Genes play a critical role in shaping our lives. Our own personal genome carries all the information 1.____(need) to make us grow and develop. It also contains information 2.___ helps determine our lifespan and affects our chances of 3. ____(contract) certain diseases. Geneticists believe genome editing is 4.__ effective means of disease treatment and prevention and they hope to apply this technology 5.__ treat a wide range of health problems. With the technology 6.____(develop) at a fast pace, however, questions arise about how to use it appropriately. One day soon we will be able to use genome editing to increase the human 7. ____(resist) to colds and flu, to 8. ____(sharp) all of their senses, etc. However, is this a good thing? What consequences might it have? Philosophers, geneticists and government 9. ____(official) have all started to wrestle with such moral issues. Despite the public argument over this technology, 10. ___(it) possibilities have been creating much excitement throughout the entire medical community and beyond. Without doubt, genome editing is one of the greatest innovations in the history of science. 答案：1. needed 2. that/which 3. contracting 4. an 5. to 6. developing 7. resistance 8. sharpen 9. officials 10. its ●系统整合知识，强化对文本逻辑的整体把握。 10 min Activity 7 Assessment 展示评价表，供学生对自己本节课的表现及所学情况进行自我评价。 ●通过自我评价，帮助学生了解自己的学习情况，提高学习的积极性和主动性。 3 min 迁移创新 作业内容 作业设计意图 3 min 本节课作业二选一，为分层作业，难度有所区别。基础一般的同学可以选择作业一，基础较好的同学可以选择作业二。 假定你是李华，你的笔友 Peter来信说，下周他要在课堂上作与“基因编辑”主题相关的介绍展示，希望你能帮助他。你给他写封信，内容包括以下几点： 1. “基因编辑”在生活中的应用； 2. 你对该项技术的看法。 二选一 1. 你对基因编辑技术的理解； 2. 你对这项技术最大的担忧。 注意： 1. 词数80左右； 2. 可以适当增加细节，以使行文连贯。 Dear Peter, Hearing that you are going to do a presentation on “genome editing” in your class next week, I would like to share with you some relevant information. ________________________________________________________________________________________ I am hopeful that the above information is useful to you. Yours, Li Hua 参考范文一： Dear Peter, Hearing that you are going to do a presentation on “genome editing” in your class next week, I would like to share with you some relevant information. Genome editing, serving as a new weapon against diseases, will lead to a fundamental change in health care. Experts may use it to increase the human resistance to some diseases, to sharpen people’s senses or to make them more intelligent. However, the widespread use of genome editing brings some moral issues and consequences. What if it is used improperly by those who seek fame and money? Most terribly, it is likely to create genetic viruses, weapons or even the so-called “Frankenstein monster”. I am hopeful that the above information is useful to you. Yours, Li Hua 参考范文二： Dear Peter, Hearing that you are going to do a presentation on “genome editing” in your class next week, I would like to share with you some relevant information. Genome editing allows geneticists to treat a wide range of health problems, such as restoring a blind person's vision. By correcting abnormal genes early on, it ultimately prevents diseases from ever developing. It may even help us enhance healthy bodies or select specific characteristics for unborn children. “However, the development of genome editing has brought about moral issue. Therefore, we have to put appropriate controls in place to keep the technology from running wild and make sure it works to our advantage. I am hopeful that the above information is useful to you. Yours, Li Hua ●通过分层作业满足不同水平学生需求，实现知识迁移。 板书设计 Unit 3 Fit for life Welcome to the unit & Reading Gene → Genome → Genome editing Pros: cure diseases / prolong life Cons: ethical risks / social inequality Structure: Introduction—Body—Conclusion 教学反思 优点： 通过 “名言引入－图片辅助－辩论深化” 的活动链，有效激发学生兴趣，且紧扣新课标 “思维品质” 培养目标。 缺点： 部分学生对genetic marker等术语理解困难，辩论时表达不流畅；小组讨论中个别学生参与度低。 改进： 课前发放术语表（含中文注释）；辩论时采用 “轮流发言制” 确保全员参与；增加实例对比（如中美基因编辑政策）帮助理解伦理差异。 1 / 11 学科网（北京）股份有限公司 学科网（北京）股份有限公司 $$