Unit 5 Section A (3a-3d）-【木牍中考】2026-2027学年九年级上册英语同步教学优质课件（人教版·新教材）

英 语 RJ 第2课时(3a-3d) 9年级上册 Unit 5 Power of Ideas Section A What changes can inventions bring to our lives? ※ 建议使用WPS2019以上版本打开 木牍中考-教学设计中心 制作 1. 读懂对话，获取对话中关于无线电的发明者、发明时间、发明背景 及其带来的影响等方面的信息，理解并梳理语篇中一般过去时被动 语态描述发明过程与影响的表意功能（学习理解）。 2. 根据对话内容完成 3a–3c 的问题回答与信息梳理任务，能正确使 用一般过去时被动语态句子，复述无线电的发明过程及其对世界的 改变(应用实践)。 3. 讨论并表达自己心目中 "最有用的发明" 及其理由，能用被动语态 简要介绍一项自己了解的发明，客观评价发明创造对人类社会发展 的作用(迁移创新)。 Learning goals 通过本节课的学习，学生能够： Warming up 01 Teaching procedures 02 Exercises 03 Homework 04 Contents Warming up What do you think is the most useful invention in your life? I think... is the most useful invention because... Warming up Do you know how people sent messages in the past? People made big clouds of smoke to send messages. People wrote notes, and someone on a horse delivered them. People listened to the radio. It brought them news and music from far away. Pre-reading Look and say. Do you know this machine? What do people use it for? Let’s watch a video. • Name: Guglielmo Marconi (古列尔莫•马科尼) • Country: Italy • Lifespan: 25 April 1874 – 20 July 1937 • Title: Inventor, electrical engineer, known as “the father of radio communication”(无线电通信之父) • Won the Nobel Prize in Physics (1909) Basic Information /ˈɡʊjelməʊ/ /mɑːˈkəʊni/ Today, we’re going to focus on one that changed how the world communicates forever: the radio. While-reading Read the conversation. What does Peter think is the most useful invention of all time? 3a 有史以来；自古以来 Peter thinks that the radio is the most useful invention of all time. have to be + n. 一定是…… What does [radio] refer to here? A. B. Early wireless communication A radio receiver Messages were sent by radio waves using Morse code.(摩尔斯电码) It receives radio signals and turns them into sound, such as news and music. “Radio” can refer to wireless communication, broadcasting, or a radio receiver(接收机). Different meanings of “radio” What is the difference? Read again and complete the chart. 3b Invention: ________ Who was the inventor? ____________________ When was it invented? ____________________ How did it change the world? •____________________ •____________________ •____________________ Let’s read it carefully and find out the answers. Radio Who was the inventor? Read again and complete the chart. 3b Guglielmo Marconi. When was it invented? Read again and complete the chart. 3b In the 1890s. Read again and complete the chart. 3b How did it change the world? • The radio made the world much smaller. • It led to other important inventions like the television. • It made it much easier for people to enjoy music from artists around the world. Post-reading Listen to the conversation. Pay attention to how the key information is stressed. 3c 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. 实词重读：名词（invention, radio, news）、人名、年份、地点、核心形容词 虚词通常弱读：介词 of/by/in、冠词 a/the、连词 and 等轻读 承载关键信息的数字、专有名词通常重读 Listen to the conversation. Pay attention to how the key information is stressed. 3c 3c Role-play the conversation. What do you think is the most useful invention of all time, Peter? It has to be the radio. Before the radio was invented... The radio? Why? 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. invention(what) How to talk about an invention? inventor(who) effect(why/how) time of invention (when) effect(why/how) Four Elements of Describing an Invention: What + Who + When + How (effect) I think ... is the most useful invention. It was invented by ... It was invented in ... It changed the world because ... Choose another invention that you think is the most important and make a mind map about it. Then describe it to a partner. 3d Choose another invention that you think is the most important and make a mind map about it. Then describe it to a partner. 3d Invention: ________ Who was the inventor? ____________________ When was it invented? ____________________ How did it change the world? •____________________ •____________________ •____________________ A sample Invention: 3D printer Who was the inventor? When was it invented? How did it change the world? Chuck Hull. In 1983. It can make real objects from computer designs directly. It helps factories make special parts quickly and cheaply. It brings new ideas to medical care, daily life, and industry. I choose the 3D printer as one of the most important inventions. The first practical 3D printer was invented by Chuck Hull in 1983. Our world has been greatly changed by this amazing invention. Firstly, digital designs can be directly turned into real physical objects by it. Secondly, some special parts can be produced more quickly and at lower cost in factories with its help. Thirdly, it is also used to make medical models and other useful products. A sample Further thinking When do you use a radio in your daily life? We use radio technology every day when we use mobile phones or Wi-Fi. What other influence do you think the radio has on your world today? Mobile phones use radio to send messages to each other. Radio helps drivers find their way and get road information. Radio helps local farmers know the weather today. Radio can also help people call for help. Further thinking What other influence do you think the radio has on your world today? Many modern technologies are based on the invention of radio, so it is one of the most useful inventions. Further thinking Show time Evaluation (评价机制) Stars Correct information Suitable language Good pronunciation Nice intonation Confidence and clarity Excellent Great Good ✭ ✭ ✭ ✭ ✭ ✭ Language Points invent /ɪnˈvent/ v. Before the radio was invented, information travelled very slowly. 在无线电发明之前，信息传递得非常缓慢。 (1) 发明 Can you tell me who invented the steam engine? 你能告诉我谁发明了蒸汽机吗？ (2) 编造 I wonder what excuse he invented this time. 我想知道他这次编了什么借口。 create 创造；创建 指通过想象力等创造出新事物，通常是抽象事物，如艺术、文学作品等，也可指具体的产品 discover 发现 指找到已经存在但以前不为人知的事物，如科学规律、 资源、星系等 invent 发明；编造 指通过研究和设计，制造出以前不存在的新物品或新方法，如工具、方法、材料等 【辨】create, discover与invent Language Points The man created a new kind of music. 那个人创造了一种新的音乐形式。 The man discovered some jewellery in the box. 那个人在箱子里发现了一些珠宝。 Edison invented the light bulb. 爱迪生发明了灯泡。 Language Points Summary Key words invent 1. Suddenly, news could be spread around the world in seconds. 2. And because of the radio, some other important inventions were developed as well. 3. It also had a big effect on music. 4. The radio made it much easier for people to enjoy music from artists around the world. Sentences 用括号内所给词的适当形式填空 Exercises 1. Many everyday objects __________ (make) by 3D printers today. 2. In 1901, a radio message __________ (send) across the Atlantic ocean for the first time. 3. Different materials __________ (use) to produce things in this factory. 4. Music from all over the world __________ (play) on the radio every day. are made was sent are used is played 基础作业 熟读3a 对话；背诵并默写3a里使用被动语态的句子。 提升作业 写一段话简单描述 radio：发明者、发明时间、带来的改变。 拓展作业 选择一项中国古代发明，查找其历史背景和传播路线，制作一张“发明信息卡”(含发明者、时间、背景、影响等)，用英文撰写，至少使用5句被动语态。 (必做) (选做) (选做) Homework Thanks Class is over! Bye! Unit 5 null 81841.805 $