Unit 5 Section B 3a-3c课件 2026-2027学年人教版英语九年级上册

Vocabulary Focus Study Aims 能够获取并梳理莱特兄弟发明飞机的关键信息，能够简要复述发明过程。 能够运用预测、略读、寻读等策略获取文本信息，提高自主学习与合作学习能力。 能够分析“想法—尝试—挑战—成功”的发明过程，培养逻辑思维和创新意识。 能够了解莱特兄弟的发明故事，感受探索和创新精神。 Lead in --- Guessing Game Guess who the people are based on the tips. They were interested in flying. 1 They studied how birds flew. 2 They were two brothers. 3 In December 1903, they changed history. 4 Who are they? The Wright brothers (莱特兄弟) Lead in --- Watch a video to know more about the Wright brothers. Read the text quickly and answer the questions. How many paragraphs are there in the text? Match the main ideas with each paragraph. There are three paragraphs. 1 2 Background (背景) Effects (影响) Invention process (过程) 3 3a. Read the text and complete the chart. Find out the key sentences in the text. What was invented? Who were the inventors? Why was it invented? 3a. Read the text and complete the chart. --- Paragraph 1 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 was invented. Orville Wright and Wilbur Wright. Because the Wright brothers wanted to fly like birds. A simple idea A great invention 3a. Read the text and complete the chart. --- Paragraph 2 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 solutions 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. What challenges were met? How was it invented? When was it invented? ① How to get the glider into air. ② How to control it once it was flying. The Wright brothers looked at how birds fly and added an engine to the glider. It was invented in December 1903. 3a. Read the text and complete the chart. --- Paragraph 3 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. What was its effect? It made travels much easier and faster, and the world became much smaller. Before the plane After the plane Journeys took ___________________. Journeys may take _______________. Communication was _____________. Communication became __________. The world seemed very ___________. The world has become a much _______ place. days, weeks, or months a few hours more difficult much easier large smaller 3a. Read the text and complete the chart. --- Paragraph 3 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. What changes did the plane bring? ______ travel ______ communication a _______ world faster easier smaller Read 3a again for the key phrases. 极大地 似乎 发明 发明人 be looking to do… 试图找到做某事的方法 not… at all 一点也不… 解决问题 比空气重的… (n.)飞行 研究 滑翔机 主要挑战 控制 一旦 解决方法 宾语定语 相反 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 solutions by looking at how birds flew. Read 3a again for the key phrases. 引擎 take+时间, 花费… 几个; 一些 定语定语 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. Think about the following question with your partners. We have learned how the writer introduces the plane. If you introduce another great invention, what information should you include? Invention … 3b. Choose a great invention you are interested in. Do some research and make notes about it. 由…发明的 由…制成的 have difficulties in doing sth. 在…上有困难 促成… 导致… ________ 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 ____________. 发明 发明人 时间/地点 原因 原材料 挑战/问题 结果 How can we write about an invention? 3c. Write about the invention you have chosen using the information from 3b. 写作指导 话题分析： 介绍一项伟大发明,写明发明物、发明者、发明原因、研发过程中遇到的困难、制作材料以及该发明带来的影响。 文本体裁： 说明文(介绍类短文),需条理清晰,客观陈述事实。 人称： 第三人称为主 时态： 一般过去时(用于发明时间、发明者、研发过程中遇到的困难的描述); 一般现在时(用于物品材质、发明带来的现实影响的描述). 语态： 一般过去时被动语态(描述物品被发明/制造) 主动语态(描述发明者付出的行动/遇到的困难) 3c. Write about the invention you have chosen using the information from 3b. 写作框架 Para. 1 Among all the inventions, the invention of ______ has greatly changed our whole world. It was invented by ______ in __________. It was invented because ______. Para. 2 The inventor had difficulties in ______. To solve the problem of_____, ______ spent lots of time working on this invention. He tried many times and found useful solutions by _____. Finally, ________ was invented. Para. 3 The invention has greatly changed ______. Because of it, people can ______. It has made our lives ______. 发明 发明人 时间/地点 原因 困难 困难 发明人 措施 发明 影响 影响 影响 3c. Write about the invention you have chosen using the information from 3b. 发明的背景 be designed for 为......设计; be invented by...由......发明; with the development of...随着......的发展; come up with想出; be made of/from由.....制成; in order to为了 发明的用途 be used to do sth. /be used for doing sth. 被用来做某事; send messages 发信息; search for information 搜索信息 发明的影响 play an important role in...在......中起重要作用; have a big effect on...对......有重大影响 make our lives much easier and more convenient使我们的生活更轻松和方便 Useful expressions 3c. Write about the invention you have chosen using the information from 3b. The early telephone was invented by Alexander Graham Bell in 1876. It was invented because people wanted to communicate with others over long distances. It was made of simple materials, such as metal and wood. Bell had difficulties in testing and improving the telephone. The invention led to faster communication and changed people's lives. Exercise Exercise --- Translate the sentences. 1. 这项伟大的发明极大地改变了人们的日常生活。 This great invention ____________________ people’s daily lives. 2. 为了解决远距离沟通的难题，许多科学家开始做大量实验。__________ the problem of long‑distance communication, many scientists began doing lots of experiments. 3. 他们通过观察大自然找到了这两个难题的解决办法。 They ____________________ both problems _____ watching nature. 4. 研发这个机器存在两个主要挑战：获取动力以及稳定地操控它。There were __________________ when developing this machine: getting power and controlling it steadily. has greatly changed To solve found their solutions to by two main challenges Exercise --- Translate the sentences. 5. 那位发明家在改良产品方面遇到困难。 The inventor ________________________ improving his products. 6. 它是由金属和塑料制成的，你可以清楚看见这些原材料。 It ______________ metal and plastic, and you can see the materials clearly. 7. 这种新材料是由植物制成的，你已经看不出原本的植物形态。 This new kind of material _______________ plants, and you can no longer see its original plant form. 8. 正是这项发明促成了贸易的快速增长。 This very invention _____________________ the rapid growth of trade. had difficulties in is made of is made from led to / resulted in $