Unit 5 Power of Ideas Section A (3a-3d) 课件 2026-2027学年人教版英语九年级上册

该初中英语课件围绕“发明的力量”主题，聚焦invention等核心词汇、被动语态及发明四要素提取。课堂通过视频导入无线电通讯，结合Think and Share列举拉链、飞机等发明，搭建从已知到新知的学习支架，引导学生用速读、细读策略梳理对话信息。 其亮点在于融合思维品质与语言能力培养，如3b图表归纳发明要素培养逻辑梳理能力，3d思维导图实现阅读输入到口语输出迁移。通过角色扮演关注语音语调，讨论无线电利弊渗透批判性思维，助力学生提升信息整合与表达能力，为教师提供清晰的素养导向教学路径。

Section A (3a-3d) Unit 5 Power of Ideas 01 Teaching Objectives 语言能力：学生掌握invention、spread、develop等核心词汇及 of all time、in seconds等高频短语；读懂 Fu Xing 与 Peter 关于无线电通信的对话，准确提取发明者、发明时间、影响等关键信息；理解并运用一般现在时与一般过去时被动语态描述发明创造过程，完成3b信息图表填空与3d口头输出。 思维品质：学生通过3b信息图表梳理"发明名称—发明者—时间—世界改变"四要素，培养结构化信息归纳与逻辑梳理能力；分析无线电通信发明前后信息传播速度的反差，理解"无线电通信让世界变小"的深层隐喻含义；3d环节自主选取发明制作思维导图，训练发散思维与信息整合能力；辩证思考发明对人类社会的利弊影响，培养独立思考与批判性思维能力。 学习能力：学生运用"速读抓主旨—细读提细节—图表理信息"的分层阅读策略，提升阅读信息定位与提取效率；通过观察对话中被动语态真实用例，自主归纳一般现在时与一般过去时被动语态的结构差异与使用规律；3c角色扮演中关注关键信息重读，发展语音语调感知能力；3d借助思维导图工具实现从阅读输入到口语输出的有效迁移。 文化意识：学生了解意大利发明家马科尼的无线电发明史实，感知科技创新对人类信息传播方式的革命性改变；体会无线电通信催生电视、普及全球音乐的文化影响，理解"创意改变生活、发明推动文明进步"的深刻内涵；尊重科学家的创新探索精神，树立敢于思考、勇于创造的科学观念，激发关注社会需求、用创新思维解决实际问题的责任意识。 02 Teaching Points 教学重点：掌握invention派生词族及 spread、develop、message等核心词汇；读懂3a对话，提取收音机发明四要素（发明者、时间、三大影响）；理解 of all time、in seconds、have a big effect on等短语用法并能在语境中运用；识别并运用一般现在时与一般过去时被动语态；完成3b信息图表填空、3c角色扮演朗读与3d思维导图口语输出。 教学难点：根据时间状语准确区分并选用一般现在时与一般过去时被动语态，避免 am/is/are 与 was/were 混用；掌握不规则动词过去分词的正确拼写；理解"无线电通信让世界变小"等抽象表达的深层含义；3d环节自主选取发明，运用思维导图有条理地组织语言，连贯完整地口头介绍一项发明的发明者、时间、功能与社会影响，实现从阅读理解到口语表达的高质量迁移。 03 Section A (3a-3d) Watch the video Think and Share. What other inventions do you know about? the zipper 拉链 the airplane 飞机 the fridge 冰箱 the telescope 望远镜 the abacus 算盘 the microwave oven 微波炉 the bicycle 自行车 the television 电视 the compass 指南针 the telephone 电话 the light bulb 灯泡 the car 汽车 the camera 照相机 the radio 收音机 paper 纸 the printing press 印刷机 Read the conversation. What does Peter think is the most useful invention of all time? Fu Xing: What do you think is the most useful invention of all time, Peter? Peter: It has to be the radio. Fu Xing: The radio? Why? Peter: Before the radio was invented, information travelled very slowly. The world was made much smaller by the radio. Suddenly, news could be spread around the world in seconds. Fu Xing: Right. Who was the inventor? Peter: An Italian inventor called Guglielmo Marconi. He developed the idea in the 1890s. In 1901, a radio message was sent across the Atlantic Ocean for the first time. Fu Xing: Wow! That was quite a distance at that time. Peter: Yeah. And because of the radio, some other important inventions were developed as well. Fu Xing: Like the television? Peter: That's right. It also had a big effect on music. The radio made it much easier for people to enjoy music from artists around the world. Peter thinks the radio is the most useful invention of all time. Read again and complete the chart. Invention: _____________ Who was the inventor? _______________________________________________ When was it invented? _______________________________________________ _______________________________________________ _______________________________________________ How did it change the world? _______________________________________________ _______________________________________________ _______________________________________________ _______________________________________________ The radio Guglielmo Marconi The idea was developed in the 1890s. In 1901, a radio message was sent across the Atlantic Ocean for the first time. ① It made the world much smaller. ② It led to other important inventions like the television. ③ It made it much easier for people to enjoy music from artists around the world. Read the conversation and select the correct answer. 1. Why does Peter think the radio is the most useful invention? A. It helped people travel around the world fast. B. It made information spread much faster. C. It could help people cross the Atlantic. D. It took the place of television. 2. Before the radio was invented, ________. A. news spread very fast B. information moved very slowly C. people could enjoy music easily D. messages could cross the Atlantic quickly Read the conversation and select the correct answer. 3. When was a radio message first sent across the Atlantic Ocean? A. In the 1890s. B. In 1901. C. In 1910. D. In 1900. 4. Which of the following is TRUE according to the dialogue? A. Marconi was a French inventor. B. The radio had no influence on music. C. The television was one of the inventions developed because of the radio. D. Radio news could travel around the world in hours. Think and share. ① It made information and news spread around the world in seconds, so the world became much smaller. ② It helped develop other important inventions such as the television. ③ It greatly influenced music and allowed people to enjoy music from worldwide artists. 1. According to the dialogue, what influences did the radio bring to the world? Please list two points. ①Yes, I agree. Although smartphones are popular now, the radio is still helpful. It brings us news and music. Besides, it works well without the Internet, so people can get information in some special situations. ②I partly agree. The radio was great in the past. But today smartphones can offer more kinds of news and music. So it is less important for most young people. ③I don't agree. Smartphones can do almost all the work that the radio used to do. So the radio is not so necessary for us any more. Think and share. 2. Many new inventions like smartphones appear nowadays. Do you agree that the radio is still a great invention? Please give your reasons. Listen to the conversation. Pay attention to how the key information is stressed. Then role-play the conversation. Fu Xing: What do you think is the most useful invention of all time, Peter? Peter: It has to be the radio. Fu Xing: The radio? Why? Peter: Before the radio was invented, information travelled very slowly. The world was made much smaller by the radio. Suddenly, news could be spread around the world in seconds. Fu Xing: Right. Who was the inventor? Peter: An Italian inventor called Guglielmo Marconi. He developed the idea in the 1890s. In 1901, a radio message was sent across the Atlantic Ocean for the first time. Fu Xing: Wow! That was quite a distance at that time. Peter: Yeah. And because of the radio, some other important inventions were developed as well. Fu Xing: Like the television? Peter: That's right. It also had a big effect on music. The radio made it much easier for people to enjoy music from artists around the world. call people, send messages, take photos, surf the internet, ... Choose another invention that you think is the most important and make a mind map about it. Then describe it to a partner. The mobile phone Inventor When What it is used for How it changed the world Martin Cooper in 1973 made communication easier, made our lives more convenient, ... I think the mobile phone is one of the most important inventions. Invented by Martin Cooper in 1973, it has greatly changed our daily lives. It is convenient to carry because it is small and thin. We can not only keep in touch with others anytime and anywhere by making calls and sending messages, but also take photos, surf the Internet, study and work easily. It has made communication much faster and brought people closer. Undoubtedly, the mobile phone has made our lives more convenient and colourful. Choose another invention that you think is the most important and make a mind map about it. Then describe it to a partner. carry passengers, transport goods, travel to far-away places The airplane Inventor When What it is used for How it changed the world the Wright brothers in 1903 made travelling faster, shortened the distance between places, and helped people visit the whole world Choose another invention that you think is the most important and make a mind map about it. Then describe it to a partner. I think the airplane is one of the most important inventions. Invented by the Wright brothers in 1903, it has greatly changed our daily lives. It helps people travel long distances. We can not only take it to visit different countries, but also send goods to other places quickly. It has made travelling much faster and brought people from different countries closer. Undoubtedly, the airplane has made our lives more convenient and opened up the whole world to us. Choose another invention that you think is the most important and make a mind map about it. Then describe it to a partner. store information, do difficult work, study, work, surf the Internet The computer Inventor When What it is used for How it changed the world a group of scientists in the 1940s improved people's work, made study easier, pushed the development of the Internet Choose another invention that you think is the most important and make a mind map about it. Then describe it to a partner. I think the computer is one of the most important inventions. Invented by a group of scientists in the 1940s, it has greatly changed our daily lives. It is helpful for both work and study. We can not only store lots of useful information on it, but also finish difficult tasks, study online and work easily. It has made our work much more efficient and helped the Internet develop fast. Undoubtedly, the computer has made our lives more convenient and colourful. Choose another invention that you think is the most important and make a mind map about it. Then describe it to a partner. write down ideas, record history, read books, spread knowledge Paper Inventor When What it is used for How it changed the world Cai Lun in ancient China helped knowledge spread widely, made education easier for common people Choose another invention that you think is the most important and make a mind map about it. Then describe it to a partner. I think paper is one of the most important inventions. Invented by Cai Lun in ancient China, it has greatly changed our daily lives. It is cheap and easy to produce. We can not only write and draw on it, but also read books and pass on knowledge. It made knowledge spread much faster and helped more people get an education. Undoubtedly, paper made our lives more convenient and pushed the development of human culture. Choose another invention that you think is the most important and make a mind map about it. Then describe it to a partner. 04 Vocabulary invent v.发明，创造，编造，虚构 invent an excuse 编造借口 invent a story 虚构一个故事 invention n. 发明；发明物；虚构 a great invention 一项伟大的发明 inventor n. 发明者，发明家 the inventor of... ...的发明者 inventive adj. 有创造力的，善于创新的 an inventive mind 富有创造力的头脑 易混辨析：invent /discover invent：发明，创造出世界上原本不存在的事物 discover：发现，找到本来就客观存在，但尚未被人知晓的事物 拓展句型辨析： invent sth. 发明某物（主动） 例句：He invented this tool. 他发明了这个工具。 be invented 被发明（被动语态，考试高频） 例句：The train was invented many years ago. 火车是很多年前被发明的。 of all time 有史以来，自古至今 核心用法：多用于形容词最高级后面，放在名词之后，强调“有史以来范围内最……”。 例句：It is one of the greatest inventions of all time. 它是有史以来最伟大的发明之一。 易混区分：of all time /at all times of all time 有史以来（谈从古到今的整体范围，常配最高级） at all times 始终，一直 (= all the time)，侧重“时时刻刻” 高频句型： one of + the + 形容词最高级 + 复数名词 + of all time 有史以来最…… 之一 例句：The high‑speed train is one of the greatest inventions of all time. 高铁是有史以来最伟大的发明之一。 ❌ 不要写成：of all the time（错误） in seconds 几秒钟之内，转瞬之间 核心用法：in + 时间段，表示在多长时间之内 / 之后，多用于一般将来时、情态动词 can，强调用时很短 例句：You can get information online in seconds. 你几秒钟之内就可以在网上查到信息。 拓展同类短语： in minutes 几分钟之内 in hours 几小时之内 易混辨析：in seconds /for seconds in seconds：几秒钟内（强调完成一件事花费的时间短） 例句：We can search for answers in seconds. 我们几秒就能搜到答案。 for seconds：持续几秒钟（强调动作延续的时长） 例句：Wait for seconds. 等几秒钟。 have an effect on 对……产生影响，对……起作用 例句：The Internet has a great effect on our daily life. 互联网对我们的日常生活有很大影响。 have effects on（复数）对…… 有多方面影响 例句：Social changes have effects on young people. 社会变化对年轻人有多方面影响。 have a good / bad effect on 对…… 有好 / 坏影响 例句：Smartphones have both good and bad effects on teenagers. 智能手机对青少年既有好也有坏的影响。 affect v. 影响（动词，= have an effect on） 例句：Smoking affects your health. 吸烟对你的健康有不良影响。 易混辨析：effect /affect affect：动词，直接作谓语，“影响” effect：名词，搭配 have an effect on 05 Homework Review the words learned in this class. Preview the grammar for the next class. See you in the next class! Lavf58.29.100 Packed by Bilibili XCoder v2.0.2 null 67655.93 $