Unit 5 Power of Ideas Section B 2a～3c课件2026-2027学年人教版九年级英语上册

该初中英语课件围绕“如何将想法转化为现实”，涵盖词汇构词法、易混词辨析、短语用法及发明主题的阅读与写作。课堂通过2a词汇表格梳理词形变化，2b选词填空强化词义辨析，搭建从基础词汇到语境应用的学习支架，衔接前后知识。 其亮点在于以语言能力培养为核心，通过构词法系统归纳（如-ion/-ive后缀）、短语用法表及分阶写作指导（如飞机发明阅读分析、三阶提纲设计），结合思维品质（分析发明原因与影响）和学习能力（研究笔记模板、检查清单），帮助学生提升词汇运用与表达能力，教师可借助清晰流程高效教学。

( 2a~3c) Section B How do we turn ideas into reality? Unit 5 Power of Ideas 2a Complete the table with different forms of the words. You can add more. Noun Verb Adjective collect creative invent product collection collective creation create invention inventive produce productive 词根 名词 动词 形容词 中考考点 collect collection collect collective 名词后缀 -ion， 形容词后缀 -ive invent invention invent inventive produce product / production produce productive product 侧重产品，production 侧重生产  构词法 2b Choose the correct word to complete each sentence. 1. The use of modern medicine has helped control / spread many dangerous diseases. 2. News could travel much more rapidly / slowly with inventions like the radio and the television. adv. /ˈræpɪdli/ 3. Fibre made from oil provides a(n) cheap / expensive solution to the problem that many people cannot afford to buy enough clothes. 4. A film was invented / produced by a film company to tell us about what robots could do for people’s lives in the future. 5. In January 1911, Feng Ru carried out a secret / public test flight in Oakland City. He showed the world what Chinese people could achieve. v. /əˈfɔːd/ n. /ˈkʌmpəni/ invent vs produce：invent 指创造从未有过的东西；produce 指制作、生产已有的东西。 control vs spread：控制 vs 传播，语义相反。 易混辨析 2c Complete the passage with the correct forms of the phrases in the box. Then discuss how an invention like sticky notes is turned into reality. Did you know that an accident led to the invention of sticky notes? In 1968, a scientist named Spencer Silver was trying to make a strong glue. ______________ , he produced a glue that was really weak. It could stick things, but it could be removed very easily. The glue was interesting, but no one could find a use for it. piece of stand up result in to sb’s surprise To his surprise adj. /ˈstɪki/ Then, in 1974, a man named Arthur Fry was trying to mark the pages in a song book using small __________ paper. However, whenever he ___________ to sing, the pieces fell to the floor. Then he remembered Silver’s glue. With the glue, the paper stayed in the song book, but it could later be removed. Fry’s idea ____________ the production of sticky notes of many sizes and colours. They gradually became popular and now are widely used all over the world. piece of stand up result in to sb’s surprise pieces of stood up resulted in n. /prəˈdʌkʃn/ adv. /ˈɡrædʒuəli/ adv. /ˈwaɪdli// 短语 含义 用法 to one’s surprise 令某人惊讶的是 固定短语，后接句子 piece(s) of 一张/片/块 量词 + of + 不可数名词 stand up 站起来 不及物动词短语 result in 导致 后接结果 短语用法 Watch and answer. 点击播放视频 1. Who invented the early steam engine? Thomas Newcomen. 2. Who made it more powerful? James Watt. 3. What did the steam engine power? Trains, ships, and factories. Would you like to know about other great inventions? Writing 3a Read the text and complete the chart. Pre-writing The invention of the plane has greatly changed the world. However, it seems that its inventors, Orville Wright and Wilbur Wright, were not looking to change the world at all. Rather, they just wanted to fly like birds. To solve the problem of heavier-than-air flight, the Wright brothers began working with gliders. There were two main challenges. The first was how to get the glider into the air. The second was how to control it once it was flying. For both problems, they found their solution by looking at how birds flew. After they solved these problems, they added an engine to the glider. Then, in December 1903, the world’s first plane flights were made. The invention of the plane has made our travels around the world much easier and faster. Journeys that once took days, weeks, or even months, can now be made in only a few hours. As a result, communication among people in different countries is now much easier, and the world has become a much smaller place. be looking to do sth n. /ˈɡlaɪdə(r)/ Let’s read first. Paragraph 1 What was invented? Who were the inventors? Why was it invented? The invention of the plane has greatly changed the world. However, it seems that its inventors, Orville Wright and Wilbur Wright, were not looking to change the world at all. Rather, they just wanted to fly like birds. the plane Orville and Wilbur Wright to fly like birds Let’s complete it. Paragraph 2 What challenges were met? How was it invented? When was it invented? To solve the problem of heavier-than-air flight, the Wright brothers began working with gliders. There were two main challenges. The first was how to get the glider into the air. The second was how to control it once it was flying. For both problems, they found their solution by looking at how birds flew. After they solved these problems, they added an engine to the glider. Then, in December 1903, the world’s first plane flights were made. get into the air and control it watched birds, solved problems, added engine in December 1903 Paragraph 3 What was its effect? The invention of the plane has made our travels around the world much easier and faster. Journeys that once took days, weeks, or even months, can now be made in only a few hours. As a result, communication among people in different countries is now much easier, and the world has become a much smaller place. faster travel, easier communication, smaller world The invention of the plane has greatly changed the world. However, it seems that its inventors, Orville Wright and Wilbur Wright, were not looking to change the world at all. Rather, they just wanted to fly like birds. To solve the problem of heavier-than-air flight, the Wright brothers began working with gliders. There were two main challenges. The first was how to get the glider into the air. The second was how to control it once it was flying. For both problems, they found their solution by looking at how birds flew. After they solved these problems, they added an engine to the glider. Then, in December 1903, the world’s first plane flights were made. The invention of the plane has made our travels around the world much easier and faster. Journeys that once took days, weeks, or even months, can now be made in only a few hours. As a result, communication among people in different countries is now much easier, and the world has become a much smaller place. How many parts can the passage be divided into? 3/Three. Beginning Body Ending What, who, and why Challenges, how, and when Effect 3b Choose a great invention you are interested in. Do some research and make notes about it. ______ was invented by ______ in ______. It was invented because ______. It was made of / from ______. The inventor had difficulties in ______. The invention was responsible for / led to ______. What + Who + When Why What (material) How (difficulties) Effect _____________ was invented by ______________________ in ______. It was invented because _____________________________________ ____________________. It was made of / from ______________________. The inventor had difficulties in _______________________________ ___________________________________. The invention was responsible for / led to ____________________ ____________________________. The telephone Alexander Graham Bell 1876 people wanted to talk to each other over metal, wires, and plastic getting enough money for his changing the way people long distances quickly research and being doubted by others communicate all over the world _____________ was invented by _______________ in ______. It was invented because _____________________________________ ____________________________. It was made of / from ______________. The inventor had difficulties in _______________________________ ___________________________________. The invention was responsible for / led to ____________________ ________________. The light bulb Thomas Edison 1879 people needed a safe and cheap way to glass and metal finding the right material for longer working hours light up their homes at night the filament (he tried over 1,000 times) and safer homes _____________ was invented by ______________________ in ______. It was invented because _____________________________________ _______________________. It was made of / from _____________________________. The inventor had difficulties in _______________________________ ________________________________. The invention was responsible for / led to ____________________ ________________________________. The Internet Tim Berners 1980s people wanted to share information computers, cables, and satellites building the first working a huge change in how quickly across the world system and getting people to use it we learn, work, and communicate 3c Write about the invention you have chosen using the information from 3b. 时态：一般过去时为主 主题：介绍一项发明 文体：说明文 人称：第三人称 要点：需包含3b笔记中的信息，即发明、发明者、时间、原因、材料、困难、影响； 一阶 审好题 定方向 用 3b 中的信息，写一篇关于你所选发明的短文。 While-writing 二阶 列提纲 写句子 一、开头：引出发明 + 发明者 + 时间 亮点句式：... was invented by ... in ... / One of the greatest inventions in history is ... / Have you ever wondered who invented ...? 高级短语：one of the greatest inventions, change the world, play an important role in 例句：Have you ever wondered who invented the light bulb? It was Thomas Edison in 1879. 二、中间：发明原因 + 制作材料 + 遇到的困难 亮点句式：It was invented because .../... was made of / from .../The inventor had difficulty in .../Although ... , he / they never gave up./It took him ... years to ... 高级短语：in order to, as a result of, face many challenges, never give up, try again and again, be doubted by others 例句：It was invented because people needed a safe and cheap way to light up their homes at night. 三、结尾：影响 + 总结 亮点句式：The invention led to .../... was responsible for .../Thanks to ... , .../Without ... , ... would be .../... has changed the world in many ways./It is hard to imagine our lives without ... 高级短语：change the way we live, make ... possible, bring ... closer together, have a great influence on, it is no exaggeration to say that 例句：Thanks to the light bulb, we can work and read at night. It changed the way we live. It is hard to imagine our lives without it. 三阶 成篇章 赏美文 开篇用逗号插入一个名词短语，对 “the telephone” 进行补充说明，点明发明的重要性，吸引读者注意 The telephone, one of the greatest inventions in history, was invented by Alexander Graham Bell in 1876. 用 “had difficulty in” 表达“做某事有困难”，用 “and” 连接两个困难（资金问题 + 被人怀疑），层次清晰，使文章内容更丰富、更真实 It was invented because people wanted to talk to each other over long distances quickly. The first telephone was made of metal, wires, and plastic. Bell had difficulty in getting money for his research, and many people doubted his idea. However, he never gave up. 用 “Without it, ... would be ... ”来假设“没有这个发明会怎样”，从反面突出发明的重要性，让读者感受到发明的价值 Thanks to the telephone, we can now talk to friends and family far away in seconds. It has brought the world closer together. Without it, communication would be much harder. It is truly a great invention that changed our lives. Checklist Point(s) Content Who, what, when, why (4 point) How and effect(2 point) Others (1 point) Structure Beginning Body Ending (3 points) Expressions Good expressions (2 points) No mistakes (grammar, tense, spelling) (2 points) Handwriting clean&tidy (1 point) Check your partner’s article according to the checklist. Post-writing Writing: write a short passage about a great invention Summary Lavf58.46.101 $