Unit 5 Section A（3a-3d）（同步教学课件）2026-2027学年九年级英语上册（新教材人教版）

Section A 3a-3d Unit 5 Power of Ideas Learning Aims 语言能力 文化意识 思维品质 学习能力 提升词汇运用、听力理解和口语表达的综合语言运用能力，形成围绕特定主题的交流意识； 掌握“关键词捕捉法”等听力技巧，学会自主预习、小组合作的学习方式，提升自主探究和协作能力。 通过观察图片、分析听力信息、仿写句子，培养逻辑思维和情景联想能力. 了解不同地区常见自然灾害的分布特点，培养对自然的敬畏之心和防灾减灾的基本认知； Look at the pictures and answer the questions. How did people send messages in the past? Look at the pictures and answer the questions. How did people send messages in the past? ③ What can the machine be used to/ for? A. It can be used to send some information. B. It can be used for showing us a film. Look at the pictures and think about the question. Do you know who invented the radio? /ɡʊˈdʒelməʊ mɑːˈkəʊni/ 古列尔莫・马科尼 An Italian inventor called Guglielmo Marconi. ② What is he doing? A. He is repairing an old machine. B. He is inventing a new machine. Look at this old machine. Do you know what it was used for? It was invented to receive radio messages from far away. 1895年，意大利无线电工程师、企业家伽利尔摩·马可尼（ Guglielmo Marconi ），在意大利的博洛尼亚（ Bologna ）成功地把无线电信号发送到了1.5英里外的地方，他成为了世界上第一台实用的无线电报系统的发明者，并于1909年获得诺贝尔物理学奖（ In recognition of his contributions to the development of wireless telegraphy ），被称作“无线电之父”。 教育背景：出生于博洛尼亚市，毕业于博洛尼亚大学 重要发明与成就： 1895 年：在家庭实验室完成首次无线电通信实验，传输距离达 2.4 公里。 1897 年：在伦敦创立马可尼无线电报公司，推动无线电技术的商业化应用。 1900 年：获得调谐式无线电报专利，大幅提升无线电通信效率。 1901 年：实现跨大西洋无线电信号传输（英格兰至纽芬兰），是无线电通 信史上的里程碑事件。 1902 年：改进磁检波器，提升了无线电通信的稳定性。 荣誉与贡献 1909 年：与布劳恩共同获得诺贝尔物理学奖。 其无线电报技术被广泛应用于航海安全通信，曾在 1909 年 “共和国号” 汽船事故救援中发挥关键作用，挽救了大量生命。 ·伽利尔摩・马可尼（Guglielmo Marconi） ·1874.4.25－1937.7.20 ·意大利无线电工程师、企业家，实用无线电报系统创始人，被称为 “无线电之父”。 3a Listen to the conversation. Pay attention to how the key information is stressed. Then role-play the conversation. He thinks radio is the most useful invention. Read the conversation quickly and get the answer. 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. 无线电 What questions does Fu Xing ask Peter? Listen and write Listen to the conversation quickly and write T (True) or F (False). 1.Peter thinks the radio is the most useful invention of all time.( ) 2. Before the radio, news spread very fast around the world. ( ) 3. Guglielmo Marconi was an Italian inventor. ( ) 4. In 1901, a radio message was sent across the Atlantic Ocean. ( ) 5. The radio had no influence on music or other inventions. ( ) T F T T F Read the conversation and answer the questions. Read and answer What invention are Fu Xing and Peter talking about? 2. Who invented the radio? 3. Where is Guglielmo Marconi from? 4. When was the first radio message sent across the Atlantic Ocean? An Italian inventor called Guglielmo Marconi. They are talking about the radio. He is from Italy. In 1901. Read and answer 5. Why does Peter think the radio is the most useful invention? 6. What other invention is mentioned because of the radio? 7. What effect did the radio have on music? Read the conversation and answer the questions. Because before it was invented, information travelled slowly. News could be spread around the world in seconds with the radio, and it also influenced other inventions and music. The television. It made it much easier for people to enjoy music from artists around the world. •________________________________________________ ________________________________________________ ________________________________________________ •________________________________________________ ________________________________________________ •________________________________________________ ________________________________________________ Read and complete Read again and complete the chart. Invention: _______ Who was the inventor? ___________________ Guglielmo Marconi radio When was it invented? __________________________________ In the 1890s. How did it change the world? Before the radio was invented, information travelled very slowly. After it was invented, news could be spread around the world in seconds. It led to the development of some other important inventions, such as television. It also had a big effect on music. The radio made it much easier for people to enjoy music from artists around the world. Read the conversation carefully and complete the chart. The radio Guglielmo Marconi (an Italian inventor) Developed the idea in the 1890s; first radio message across the Atlantic in 1901 1. Made information travel much faster; news spread around the world in seconds. 2. Made the world “smaller”. 3. Led to other inventions like TV. 4. Changed music: people could enjoy music from artists around the world easily. 3b 3c 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. Choose another invention that you think is the most important and make a mind map about it. Then describe it to a partner. 3d Introduce the invention The most important invention for me is ___. I think ____ is the most important invention. Talk about the inventor and time It was invented by ______. It was invented in ______. Explain its influence It changed the world because ______. Before _____ was invented, people ______. Now, people can ______ with it. It has a big effect on ______. Useful sentence patterns I think ... is the most useful invention. It was invented by ... It was invented in ... It changed the world because ... Question Answer What Who When How Choose another invention that you think is the most important and make a mind map about it. Then describe it to a partner. 3d The most important invention for me is the mobile phone, because it has changed the world so much. It was invented by Martin Cooper in 1973. Before the mobile phone was invented, people could only talk face to face or use fixed telephones at home. Now, people can communicate anytime and anywhere with it. Messages can be sent around the world in seconds. The world is made much smaller by this invention. People’s lives have been greatly changed, and it is used in almost every part of daily life. It has a big effect on how people work and study, too. Sample 1 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 made communication much faster and brought people closer. Undoubtedly, the mobile phone made our lives more convenient and colourful. Sample 2 Language points Point 1 And because of the radio, some other important inventions were developed as well. develop v. ① 提出 / 完善（想法 / 计划） ② 研制，开发 而且由于无线电的出现，其他一些重要发明也随之被研发出来。 develop the idea 提出构想 develop new technology 研发新技术 He developed the idea in the 1890s. ① She slowly developed her idea into a full story. 她慢慢把自己的想法完善成了一个完整的故事。 ② This new technology was developed last year. 这项新技术是去年被研发出来的。 develop v. ① (使) 成长，发展，壮大 China is developing very fast.中国正在飞速发展。 She develops an interest in science.她培养了对科学的兴趣。 ② 培养；养成（习惯、兴趣、能力） development n. 发展；研发 developing adj. 发展中的 ▶ developing countries 发展中国家 developed adj. 发达的 ▶ developed countries 发达国家 拓展 用 develop 的适当形式填空。 1. People ___________ this technology in 2000. 2. Many new inventions _______________ (develop) because of the radio. 3. China is a __________ (develop) country. 4. The _____________ (develop) of AI is changing our lives. 5. She wants to __________ (develop) an interest in music. developed were developed developing development develop Point 2 And because of the radio, some other important inventions were developed as well. ① Many new jobs were created because of the development of AI. 许多新工作因为人工智能的发展而被创造出来。 ② The team lost the game because of him. 这支队伍输掉了比赛，都是因为他。 ③ He was late for class because of missing the early bus. 他因为错过了早班车而上课迟到了。 because of介词短语，“因为；由于”，后面必须接名词、代词或动名词（doing 形式），不能接完整句子。 because of because 连词，后面接完整句子。 介词短语，后面接名词、代词或动名词。 He stayed at home because of the heavy rain.他因为大雨待在了家里。 = He stayed at home because it rained heavily. 选词填空 (because /because of)。 1. The sports meeting was put off ____________ the bad weather. 2. I stay at home ____________ I don’t feel well. 3. She cried ____________ his sad story. 4. She loves painting ____________ it makes her relaxed. 5. ____________ him, we finished the work on time. because of because because of because Because of Point 3 ① I like history. I like science as well. 我喜欢历史，我也喜欢科学。 ② He can speak English, and he can speak French as well. 他会说英语，也会说法语。 ③ She bought some books and some pens as well. 她买了一些书，还买了一些钢笔。 as well意为“也”，常用于肯定句中，且位于句末，前面不用逗号。 as well, also, too, either as well，also，too和either都可表示“也”，它们各自的用法如下： ① as well常用于肯定句中，且位于句末； ② also用于肯定句中，通常位于句中； ③ too用于肯定句中，通常位于句末，常用逗号和前面的部分隔开； ④ either多用于否定句中，常位于句末。 用as well, also, too或either完成句子： 1. If he doesn’t go, I won’t go _______. 2. In this field he has knowledge and experience________. 3. Simon likes playing football, and he ________ likes  playing basketball. 4. He likes swimming, and his wife likes it, _____. either as well also too Point 4 It also had a big effect on music. have an effect on... ① The radio had a great effect on how people communicated. 无线电对人们的交流方式产生了巨大影响。 ② The invention of the internet has a big effect on our daily life. 互联网的发明对我们的日常生活影响很大。 对…… 有影响 / 起作用 形容词常用搭配： have a big/great effect on… 对…… 有巨大影响 have a bad/negative effect on… 对…… 有不良影响 have a positive effect on… 对…… 有积极影响 Exercises 一、单项选择。 A 1. Eating too much junk food ______ your health. A. has a bad effect on B. have a bad effect to C. has bad effect on 2. Many new skills ______ by young people every day. A. are developed B. developed C. were developed A 3. Lu Xun is one of the best writers ______. A. of all time B. all the time C. on time 4. This new kind of robot ______ by scientists last year. A. developed B. was developed C. is developing 5. He gave up running ______ his weak legs. A. because B. since C. because of A B C 二、用所给词的适当形式填空。 Many everyday objects __________ (make) by 3D printers today. The first radio message __________ (send) across the ocean in 1901. The plastic _________ (heat) and then shaped into different forms. The computer file __________ (need) to be checked before printing. was sent is heated is needed are made 5、Different materials __________ (use) to produce things in this factory. 6、Music from all over the world __________ (play) on the radio every day. 7、The 3D printer __________ (control) by a smartphone app. 8、These new inventions _________ _ (develop) by young engineers last year. are used is played is controlled were developed 三. 同义句转换。 1. Sleep quality greatly affects our daily life. Sleep quality ____ ____ _______ ____ ___ our daily life. 2. He failed the exam because he was careless. He failed the exam ______ ______ his carelessness. 3. The company developed a new phone last week. A new phone ______ ______ by the company last week. 4. Many people think he is the greatest player in human history. Many people think he is the greatest player ___ ___ ___. because of was developed has a big/great effect on of all time 本课句型 Summary 我都 学会了! Key words Expression invent travel very slowly,have a big effect on ,across the Atlantic Ocean,spread around the world ,for the first time,make it easier for sb. to do sth. 1.What do you think is the most useful invention of all time? 2.It also had a big effect on music. 3.The radio made it much easier for people to enjoy music from artists around the world. Sentences Key word Expressions invent of all time, in seconds, for the first time ① What do you think is the most useful invention of all time? ② Who was the inventor? ③ ... made it much easier for sb. to do sth. Sentences 35 Basic (必做) 1.Memorize the words phrases in this part. Improving(选做) 2. Use your words to retell the dialogue of 3a. Extend (选做) 3. Try to share another invention at least 60 words. Homework Thank you ! null 81841.805 null 68909.93 $