Unit 1 Period 1 Reading and Thinking（课件）英语人教版2019选择性必修第二册

Unit 1 人教版2019选择性必修第二册 Science and Scientists Reading and Thinking John Snow Defeats “King Cholera” Learning objectives 1. Understand & use scientific terms (e.g., draw a conclusion, It was believed that...). Extract key information about Snow’s research steps. 2.Apply reading strategies (skimming, scanning) and collaborate in group discussions and presentations. 3. Recognize the universality of scientific research and scientists’ dedication. 4. Analyze text structure; critically evaluate research methods. Contents 1. Lead in 2. Pre-reading 3. While Reading 4. Post Reading 5. Summary 6. Language points 7. Assessment 8. Homework Contents 01. Lead in Lead in 1. What do you know about cholera? Cholera is an infectious disease that causes severe watery diarrhea (腹泻), which can lead to dehydration (脱水) and even death if untreated. It is caused by eating food or drinking water containing a bacterium called Vibrio cholerae. The disease is most common in places with poor sanitation (卫生设施), crowding and war. Common locations include parts of Africa, south Asia, and Latin America. John Snow (1813-1858), he was an English anesthesiologist(麻醉学家) and epidemiologist(流行病学家) who is considered a pioneer in anesthesiology and public health medicine. He was the first to propose measures to prevent cholera, and his study of the 1854 cholera outbreak in Soho, west London, is considered a pioneer in epidemiological research. John Snow Lead in 2. Who is John Snow? 3. How can scientists defeat such a disease? 02 Pre-reading Read for prediction Skim the title & the picture to answer: ·What’s the passage mainly about? ·How did John Snow defeat cholera? 03 While-reading Skim the passage to choose the main idea of the passage. A. John Snow was a well-known doctor in London. B. The cause of Cholera was polluted water. C. The source of all drinking water should be examined. D. How John Snow collected, analysed data and found the cause of the disease and defeated it . Read for Main ideas Para 1: Para 2: Para 3: Para 4: Para 5: Cholera background & Snow’s goal Contradictory theories & investigation Mapping method & discovery Evidence & solution Influence on epidemiology Match paragraph main ideas: Read for Main ideas Read the passage again and complete the chart below. It was believed that cholera was caused by bad ______ or germs in ____________. Snow _____________ the places where the people who _____ had lived. Many deaths occurred near the ___________ in Broad Street. Some people ________ drunk the water from the pump, and lived. A woman and her daughter died in another part of London after _____________________. The pump water carried ____________. The ________ of the pump was removed. air food or water marked on a map died water pump hadn’t cholera germs handle A. C. B. D. E. drinking water from the pump Read for details Stage Key Actions Evidence/Result Problem Raising(para.1-2) Data Collection (para.3) Evidence Analysis(para.4) Conclusion(para.5) Read the passage to fill in the research process table. Observed cholera outbreak in London Mapped the deaths Investigated water source Removed the pump handle Noted high death rate in Broad Street Found most deaths near Broad Street pump Discovered polluted water from the pump Cholera cases decreased Read for details draw a conclusion find a problem ask a question collect data Evidence Analysis Structure Read for structure 04 Post-reading Share your understanding of the scientific research process in the passage. Follow the research steps and prepare a short oral presentation to share with the class. Group Discussion Problem Raising → Data Collection → Evidence Analysis → Conclusion Post Reading: Thinking What makes great scientists? creative strict patient determined positive hard-working confident ambitious ? Post Reading: Thinking 05 Summary draw a conclusion find a problem ask a question collect data Evidence Analysis John Snow Defeats “King Cholera” The background of cholera and John Snow’s desire to defeat it. The two contradictory theories about how cholera spread and Snow’s investigation. Snow’s method of marking on a map and his discovery. The evidence that the pump water carried cholera germs and the solution. The link between cholera cases and water companies and Snow’s influence. Summary Fill in the blanks with the correct words or phrases. “Cholera used to be one of the most feared 1.________ in the world. John Snow, a British doctor, wanted to 2.________ it once and for all. At that time, there were two 3.____________ theories about how cholera spread. Snow 4._____________ the second theory that cholera was caused by germs in food or water. When an outbreak hit London in 1854, he began to 5.__________. He marked on a map the places where the dead had lived and found that many deaths occurred near a water 6.________. He suspected the water was to blame. Finally, he had the handle of the pump 7.__________, and the disease was stopped. Snow’s work has had a great 8.__________ on the way scientists study diseases.” Summary diseases destroy contradictory subscribed to investigate pump removed influence 06 Language points 1. This illness causes severe diarrhea, dehydration, and even death. 1) severe adj. 极大的；十分严重的 They suffered severe hardships. (2022年全国乙卷) 他们遭受了极大的苦难。 I was rushed to a clinic with a high fever and severe pain.” （2025年山西一模） 我因高烧和严重的身体疼痛被紧急送往诊所。 His injuries are severe. 2) severe adj. 极为恶劣的; 严厉的; 苛刻的 --- severe weather conditions The courts are becoming more severe on young offenders. She was a severe woman who seldom smiled. 【归纳】 be severe on/with 对……严厉 be severe with oneself 严于律己 【拓展】 severely adv. 很严重地; 极为恶劣地 2. In general, doctors in those days had two contradictory theories to explain how cholera spread. contradictory adj. containing or showing a contradiction 互相矛盾的；互相对立的 be contradictory to… 与……矛盾、相反 e.g. His remark was contradictory to the truth. 他的叙述与事实矛盾。 【拓展】 contradict v. 反驳; 与……相矛盾 contradiction n. 抵触; 矛盾; 矛盾的说法 3. One theory was that bad air caused the disease. 本句中that bad air caused the disease是that引导的表语从句, that在从句中不作成分, 没有意义, 只起连接作用。 e.g. My dream was that I could have a three-bedroom house in that city. 我曾经梦想能在那个城市有个三居室的房子。 思考 请找出课文中的表语从句。 4. Snow subscribed to the second theory. subscribe v. to agree to buy or pay for shares 认购(股份) to pay an amount of money regularly in order to receive or use sth. 定期订购 to pay money regularly to be a member of an organization or to help its work 定期缴纳(会费) ; 定期捐款赞助 e.g. You can download the application and subscribe订阅 today to get your first issue free.(2021新高考1卷) You can subscribe to the magazine for as little as $32 a year. 【拓展】 subscribe to 同意, 赞成 e.g. I have never subscribed to the view that schooldays are the happiest days of your life. subscriber  n. 订阅人；定期捐款者；消费者 subscription  n. 订阅；订阅费；定期捐款 5. Snow suspected that the water pump was to blame. 1) suspect v.怀疑,怀疑; 感觉有问题; 不信任 【常用搭配】 suspect sth. suspect sb. of doing sth. suspect sb. to do sth. suspect + that从句 e.g. I have no reason to suspect her honesty. Pilcher is suspected of giving false information. 2) suspect n. 嫌疑犯，可疑对象 e.g. The policeman can use drones to help us monitor the suspect’s living condition. （2022年全国乙卷） 警察可以使用无人机来帮助我们监控嫌疑人的生活状况 。 3) blame v. 责备; 指责; 把……归咎于 Officials believe that more than one person may be to blame for the fire. Marie still blames herself for Patrick's death. n. 责任; 责备; 指责 It’s the seaside birds that deserve at least part of the blame for getting Nick Burchill blacklisted at the Fairmont Empress Hotel in Victoria, Canada. (2024年新高考甲卷) 在加拿大维多利亚的费尔蒙特皇后酒店，尼克·伯奇尔被列入黑名单，至少部分原因应归咎于这些海边的鸟 。 6. It seemed that the woman liked the water from the pump so much that she had it delivered to her house every day. have sth. done 结构 so….that 引导结果状语从句 It seemed that … “看来……”, that引导表语从句 7. Accordingly, he had the handle of the pump removed so that it could not be used. handle n.   the part of a door that you use for opening it 把手 the part of an object that you use for holding it 柄 e.g. turn the handle the handle of a knife v. to deal with a situation, a person, an area of work or a strong emotion 处理, 应付(局势、人、工作或感情) to touch, hold or move sth. with your hands 触, 拿, 搬动 to control a vehicle, an animal, a tool, etc 控制, 操纵(车辆、动物、工具等) e.g. She's very good at handling her patients. The label on the box said: ‘Fragile. Handle with care.’ I wasn't sure if I could handle such a powerful car. 【拓展】 get / have a handle on 弄懂，理解，搞明白 e.g. It’s difficult to get / have a handle on how widespread this problem is. 8. We now know how to prevent cholera, thanks to the work of John Snow. thanks to = with the help of; because of 幸亏，由于 e.g. Thanks to your help, we succeeded． It was all a great success — thanks to a lot of hard work. thanks to, owing to, due to, because of 词条 用法 常作成分 thanks to “多亏”，多放在句首，用来表达正面意思 (接近于原意 “感谢”)，偶用于讽刺口吻。 作状语 owing to “由于、因为”，可置于句首或句末。 常作状语、表语 due to 表示原因，可与owing to 互换 常作表语、状语或定语 because of 着重某个结果的原因 常作状语 07 Assessment Assessment Learning Objectives Score(1-5) 1.After learning, I am able to know and understand the formation and development of virtual choir. 2.After learning, I am able to master reading strategies, such as scanning, skimming, detailed reading, etc. 3.After learning, I am able to understand the significance of the virtual choir. 5-完全能；4-基本能；3-不确定；2不太能；1-完全不能 08 Homework Homework 1. Basic Task (80 words) Write a news report as a journalist about John Snow’s achievement, using at least 5 key phrases from the text. 2. Advanced Task (120 words) Analyze the characteristics of Snow’s research methods and their inspiration for your study/life. 作业一参考答案： Cholera Conquered: John Snow's Scientific Breakthrough In 1854, London was struck by a cholera outbreak. Dr. John Snow, suspecting contaminated water, mapped the deaths near Broad Street’s pump and found a link to the water source. He removed the pump handle, halting the disease. Further investigation showed polluted Thames water from certain companies caused infections. Snow’s use of statistics and maps pioneered modern epidemiology, proving science can defeat deadly diseases. 作业二参考答案： The Impact of John Snow’s Research Methods John Snow’s approach to defeating cholera revolutionized modern science. His key methods—systematic mapping of cases, analyzing exceptions (e.g., pub workers who didn’t drink pump water), and testing hypotheses by removing the pump handle—highlighted the power of empirical evidence. Unlike contemporary doctors relying on theories, Snow prioritized field investigation, linking cholera to waterborne germs. This teaches us that learning and problem-solving require: 1) observing details critically; 2) testing ideas with evidence; 3) persisting despite challenges. In daily life, whether solving a study problem or forming good habits, Snow’s logic—connecting causes to effects and taking practical action—remains invaluable. His work proves that scientific thinking transcends labs, guiding us to tackle issues systematically. 作业二参考答案： The Impact of John Snow’s Research Methods John Snow’s approach to defeating cholera revolutionized modern science. His key methods—systematic mapping of cases, analyzing exceptions (e.g., pub workers who didn’t drink pump water), and testing hypotheses by removing the pump handle—highlighted the power of empirical evidence. Unlike contemporary doctors relying on theories, Snow prioritized field investigation, linking cholera to waterborne germs. This teaches us that learning and problem-solving require: 1) observing details critically; 2) testing ideas with evidence; 3) persisting despite challenges. In daily life, whether solving a study problem or forming good habits, Snow’s logic—connecting causes to effects and taking practical action—remains invaluable. His work proves that scientific thinking transcends labs, guiding us to tackle issues systematically. Thank you $$