Unit 5 Power of Ideas Section A 1a-2d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“发明对生活的影响”核心主题，涵盖发明相关词汇（如invention, laptop）、功能句型（What can it be used for?）及含情态动词的被动语态等知识点。课堂导入通过计算机发展历史（从1946年ENIAC到1981年Osborne 1）展示发明的变化，搭建学习支架帮助学生理解发明的演化脉络。 其亮点在于以任务型活动（如听力对话分析Super See和Smart Cook、3D打印机功能讨论）提升语言能力，通过对比计算机历史培养思维品质，结合词汇拓展（如invent-invention-inventor）和语法练习引导学习能力。学生能提升语言运用与探究能力，教师可高效开展互动教学，增强课堂实效。

Unit 5 Power of Ideas Section A What changes can inventions bring to our lives? 课时1(1a-2d) 九年级上册人教 1. 掌握并正确运用词汇：invention, camera, laptop, high-speed train, super, sunglasses, button, itself, hundreds (of...), produce, file, plastic 2. 能讨论新发明的功能：① What can it be used for? ② It can be used for/to ... ③ How does it work? Look at the history of the computer. What changes have taken place? The first general-purpose computer ENIAC Year: 1946 Weight: about 27 tons Speed: 0.1 MHz Feature: operated by plugging wires Look at the history of the computer. What changes have taken place? The first personal computer Altair 8800 Year: 1974 Weight: about 30 kg Speed: 2 MHz Feature: no keyboard or screen; operated by switches Look at the history of the computer. What changes have taken place? The first laptop Osborne 1 Year: 1981 Weight: about 11 kg Speed: 4 MHz Feature: screen, keyboard and battery pack Look at the history of the computer. What changes have taken place? Computers have become smaller, faster, and more user-friendly. What changes can inventions bring to our lives? (教材P42 Section A 标题) invention /ɪnˈvenʃ(ə)n/ n. 发明；创造 由“invent (v. 发明) + -ion (名词后缀)”构成，表示“发明物”时为可数名词，表示“发明的行为”时为不可数名词。 This invention isn’t just for fun—it shows how humans copy nature to solve problems. 这项发明不只是为了有趣——它展示了人类如何模仿大自然来解决问题。 Necessity is the mother of invention. 需求是发明之母。 7 What changes can inventions bring to our lives? (教材P42 Section A 标题) invention /ɪnˈvenʃ(ə)n/ n. 发明；创造 invent v. 发明 inventor n. 发明家 invention n. 发明；创造 词形拓展 Edison invented a lot of things. He is a great inventor and he is famous for his inventions. 爱迪生发明了许多东西。他是一位伟大的发明家，他因他的发明而闻名。 8 Match the names with the things. Find out when they were invented. 1a 1. _____________ 4. _____________ 3. _____________ 6. _____________ 2. _____________ 5. _____________ plane camera laptop mobile phone TV high-speed train high-speed train camera TV mobile phone plane laptop Listen to the conversations. Choose the invention each conversation talks about and find out where they are from. 1b Conversation 1: ______ A Conversation 2: ______ A. Super See, from _________ B. Smart Cook, from _______ Germany B China Listen again and circle T for true or F for false. 1c 1. Super See is a pair of sunglasses designed to protect people’s eyes. 2. A mini-camera is connected to Super See to help with reading. 3. A button on Smart Cook should be pressed before cooking. 4. All the food is added by Smart Cook itself. 5. Hundreds of kinds of dishes can be made by Smart Cook. T F T F T F T F T F Listening Scripts Welcome to the International Exhibition of Inventions! Over here, we have Super See from Germany. They look like sunglasses. What are they used for? They’re for people who can’t see well. They don’t find normal glasses helpful. How do they help people to see? Well, a mini-camera is connected to the front of the glasses. It makes everything look larger. Words can also be turned into sound. Guide 1: Ella: Guide 1: Ella: Guide 1: Conversation 1 与……相连 Listening Scripts Cool! So they can help people watch TV and read books. Yes. They can also control the colour and picture. Amazing! Ella: Guide 1: Ella: Conversation 1 Listening Scripts What smells so delicious? Come and have a try. Smart Cook from China is cooking some food. Really? How does it work? It’s simple! Put food like carrots and onions in the cup on the top of the machine. Then press this button. All the food is cut and fried. The oil and salt are also added by the machine itself. Fantastic! How many kinds of dishes can it make? Teng Fei: Guide 2: Teng Fei: Guide 2: Teng Fei: Conversation 2 在……的顶端/顶部 Listening Scripts Hundreds! It has an app with many recipes. Great! With this robot, my parents can take a break from cooking. How nice of you to think so. I’m sure they will love it. Guide 2: Teng Fei: Guide 2: Conversation 2 休息一下 A button on Smart Cook should be pressed before cooking. (教材P42 1c) button /ˈbʌt(ə)n/ n. 按钮；扣子 按钮 扣子 Peter pressed a button and the door opened. 彼得按了一个按钮，然后门开了。 Click on the icon with the right mouse button. 用鼠标右键点击图标。 A button was missing from his shirt. 他的衬衫上掉了一颗扣子。 He quickly did up the buttons on his shirt. 他快速系上了衬衣上的扣子。 do up a button = fasten a button 系上扣子 16 A button on Smart Cook should be pressed before cooking. (教材P42 1c) 含情态动词的被动语态 本句中should be pressed为含有情态动词的被动语态，其基本结构为“情态动词+助动词be+及物动词的-ed形式”，否定形式为“情态动词+not+助动词be+及物动词的-ed形式”。 Students should be allowed to make decisions by themselves. 学生应该被允许自己做决定。 Waste paper should not be thrown here. 废纸不应该扔在这里。 17 A button on Smart Cook should be pressed before cooking. (教材P42 1c) 含情态动词的被动语态 含有情态动词的被动语态变为一般疑问句时，应将情态动词移到句首。 Can the sentence be translated this way? 这个句子可以这样翻译吗? 用法拓展 18 Hundreds of kinds of dishes can be made by Smart Cook. (教材P42 1c) hundreds of 表示约数，后接可数名词复数，其前不用数词修饰。但 hundred前有基数词或表示数量的限定词时，词尾不加-s，且不与of连用。 Although there are only about two hundred teachers and students in this school, hundreds of sweet moments take place here every day. 虽然这所学校只有大约两百名师生，但每天这里都发生许多美好的瞬间。 hundreds of 许多；大量 thousand “千”、million “百万”和 billion “十亿”的用法与 hundred相同。 19 What can the two inventions be used for? Describe them to a partner. 1d A: What can the special glasses be used for? B: They’re for people who can’t see well. A: How do they work? B: A mini-camera is connected to the front of the glasses. It makes everything look larger and turns words into sound. A: Amazing! How about Smart Cook? What can the two inventions be used for? Describe them to a partner. 1d B: It is used to help people take a break from cooking. First, we put food in the cup on the top of the machine. Then press a button and all the food is cut and fried. What’s more, the oil and salt are also added by the machine itself. A: That’s so great! 2a Tick the things that you think a 3D printer can make. You can add more.  medicine  arms and legs  hearts  toys  tables  shoes  computers  houses  chairs  food  ________ √ √ √ √ √ √ √ √ bikes 3D打印机 2b Listen to the conversation and answer the questions. 1. Where did Han Lin go last weekend? 2. Why was the 3D printer Han Lin’s favourite invention? Han Lin went to the International Exhibition of Inventions. Because almost everything under the sun can be made by it. Why was the 3D printer Han Lin’s favourite invention? (教材P43 2b) printer /ˈprɪntə(r)/ n. 打印机；印刷公司 由“print(v. 打印) + -er”构成。 This kind of printer is widely used in schools and offices. 这种打印机被广泛用于学校和办公室。 We sent the files to the printer yesterday, and the books should be ready next week. 我们昨天把文件发给印刷厂了，书下周应该能印好。 24 Complete the sentences with the correct forms of the words in the box. Then listen again and check your answers. 2c read design produce create send First, the object is ________ on the computer. Then, a file is _______ by the computer. And the file is _____ to the 3D printer. Next, the file is _____ by the 3D printer. Finally, the object is ________ by building up plastic. 1 2 3 4 5 designed created sent read produced Finally, the object is produced by building up plastic. (教材P43 2c) We pride ourselves on producing high-quality products. 我们以生产高质量的产品而自豪。 An adult cat may produce kittens three times a year. 一只成年猫一年可能生三窝小猫。 produce /prəˈdjuːs/ v. 生产；繁育 [不可数名词] 产品；（尤指）农产品 The shop sells only fresh local produce. 这家商店只售当地的新鲜农产品。 词义拓展 26 Finally, the object is produced by building up plastic. (教材P43 2c) plastic /ˈplæstɪk/ n.塑料 adj.塑料的 n. 塑料 adj. 塑料的 We should reduce the use of single-use plastic to protect the environment. 我们应该减少一次性塑料的使用以保护环境。 These are plastic toys, so they are light. 这些是塑料玩具，所以很轻。 27 Listening Scripts Hi, Han Lin! Did you go to the International Exhibition of Inventions last weekend? Yes, some amazing inventions were shown from all over the world. What invention did you like the most? Oh, the 3D printer was amazing. Why? Almost everything under the sun can be made by it. Really? Like what? Ella: Han Lin: Ella: Han Lin: Ella: Han Lin: Ella: Listening Scripts Well, all kinds of everyday objects. Toys, chairs, tables, and even houses can all be made by the 3D printer. That’s cool! Yeah. And in medicine for example, arms and legs, and even hearts can be created by the 3D printer. That’s great! How does it work? Well, first, the object is designed on a computer. Then, a file is created and sent to the 3D printer. The 3D printer reads the file, and after that, the object is produced by building up plastic. Han Lin: Ella: Han Lin: Ella: Han Lin: Listening Scripts Is only plastic used? No, other materials can also be used to produce things. It can even make food. Oh, really? I’d love to try 3D-printed food! Ella: Han Lin: Ella: List the things you use every day and choose the one that you like the most. Then talk about what it can be used for and its importance. 2d A: What invention do you like the most? B: I like ... the most. A: What can it be used for? B: It can be used for/to ... A: Amazing! / Fantastic! Is it important in your daily life? B: Yes, it ... Things I use every day 1. laptop 2. pencil 3. desk 4. ______ The first electronic _______ (print) was developed in 1968. The gunpowder was a Chinese ________ (invent) . She has taught ________ (hundred) of students. 一、用所给词的适当形式填空。 printer invention hundreds 二、 完成句子，每空一词。 1. 这些工具是用3D打印机生产的。 These tools ____ _________ ____ 3D printers. 2. 他按了一个按钮，然后等着坐电梯。 He _______ __ _______ and waited for the lift. 3. 那把旧椅子应该扔掉了。 That old chair ______ ___ _______ _____. are produced by pressed a button should be thrown away Key words Expression invention, laptop, high-speed train, super, sunglasses, button, itself, printer, produce, file, plastic hundreds of ① What can it be used for? ② It can be used for/to ... ③ How does it work? Sentences 34 1. 用下列句型和同学讨论某样发明的功能。 —What can it be used for? —It can be used for/to ... —How does it work? —... 2. 将本课所学内容形成重点笔记。 35 null 93911.555 null 80457.18 $