Unit 5 课时3 Section A 3a-3d（大单元教学课件）英语新教材人教版九年级上册

Great questions. Great minds. Thomas Edison, with the way with the bob, so bright night turns to day. Alexandre m, the telephone connects us. The right product took in the airplane, helps us printing both. James, what with power so grand, go a to move the land. Mary curry, so brave and wise, her work gone. Radiation opened our eyes. Benjamin Franklin, with a Spark in the rain, discovered in electricity or alternative, break minds with dreams. So both and true, they change the world for me and you. What do you think is the most useful invention of all time? Peter IT has . to be the radio. O why? Before the . radio was invented, information travel very slowly. The world was made much smaller by the radio. Suddenly, news could be spread around the . world in seconds, right? Who was the invention? An italian and venture called google marconi. He developed the idea in the eighty nineties. In nineteen, no one, a radio message was sent across the atlantic ocean for . the first time. 哇哦，that was quite a distance at that time. Yeah, and because of the radio, some other important inventions were developed as well. like the television. 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. Section a activity three c. Listen the conversation, pay attention to how the key information is stressed, then role play the conversation. What do you think is the most useful invention of all time? Peter IT has to be the radio. The radio. why? Before the . radio was invented, information traveled very slowly. The world was made much smaller by the radio. Suddenly, news could be spread around the world in seconds. right? Who is the inventor? An . italian inventor called guyon mocco y. He developed the idea in the eighteen nineties. In nineteen, no one, a radio message was sent across the atlantic ocean for the first time. Well, that was quite a distance at that time. yeah. And because of the radio, some other important inventions were developed as well. like the television. 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. Section A 3a-3d Unit 5 The Changing World 01 Lead-in 02 Pre-reading 03 While-reading 04 Post-reading 05 Language points 06 Exercises Contents 07 Summary 08 Homework Learning Objectives 01 能读懂对话，获取对话中关于收音机的发明者、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（was/were + done）描述发明过程与影响的表意功能（学习理解）。 02 能根据对话内容完成 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，复述收音机的发明过程及其对世界的改变(应用实践)。 03 能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)。 通过本节课的学习，学生能够： 01 Lead-in There are so many great inventions in the world. Now let’s enjoy a video to know more about them. What invention do you like the most? I like ... the most. Because .... 02 Pre- reading What can you see from the picture? 伽利尔摩・马可尼 Guglielmo Marconi /ɡʊˈljɛlmoʊ mɑːrˈkoʊni/ the earliest wireless telegraph 最早的无线电报机 What does Peter think is the most useful invention of all time? 03 While- reading Read the conversation and think. 3a 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. have to be + 名词 必须是/成为... What does “radio” refer to here? VS Read again and complete the chart. 3b radio 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. Who’s the inventor? 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. When was it invented? 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. How did it change the world? ① ① ② ③ An Italian inventor called Guglielmo Marconi. In 1901. Because of the radio, some other important inventions were developed as well. The radio made it much easier for people to enjoy music from artists around the world. By the radio, news could be spread around the world in seconds. radio 04 Post- reading Listen to the conversation and pay attention to the key information is stressed. Then role-play the conversation. 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. Choose another invention you think is the most important and make a mind map about it. Then describe it to a partner. 3d It was invented by .... It was invented in .... It changed the world because .... Time Invention Inventor Changes I think ... is the most useful invention. Checklist: Good cooperation： More expression： More creative： Good design： 05 Language Points 1. “ of all time ”意为“有史以来、所有时代中”,用来强调范围，表示“在所有时间/所有事物里最……”。 e.g.This is the most useful invention of all time. 这是有史以来最有用的发明。 关键搭配：它必须和形容词/副词的最高级一起使用，用来修饰名词，放在名词后面。 常见结构有两种：the + 形容词最高级 + 名词 + of all time one of the + 形容词最高级 + 复数名词 + of all time 1)This is ______ invention of all time. A. useful B. more useful C. the most useful D. most useful 2)屠呦呦是有史以来最伟大的科学家之一。 Tu Youyou is one of the greatest scientists of all time. 练习 2. “ in seconds ” 意为立刻、马上、几秒钟之内，不是“在若干秒里”，侧重速度很快、瞬间完成。 句子成分：常在句中作时间状语，多放句末，也可放句首表强调。 句式结构：主语 + 谓语 + 宾语 + in seconds e.g.You can look up any information in seconds. 你可以瞬间查到任何信息。 1)The clever boy worked out the difficult math problem ____. A. in second B. for second C. in seconds D. for seconds 2)With the Internet, we can get news in seconds. 有了互联网，我们几秒钟内就能获取新闻。 in seconds vs in a second • in seconds 复数：几秒内、顷刻间（泛指速度快，日常通用） • in a second 单数：马上、片刻之后（侧重立刻马上，偏口语） in seconds vs for seconds • in seconds：表示完成时间，动作在几秒内做完 • for seconds：表示持续时长，动作持续了好几秒 3.have a big effect on… 1)含义：对……有很大的影响 2)变体拓展（写作提分必记） have a great effect on 有巨大影响 have a strong effect on 有强烈影响 have a bad effect on 对……有不良影响 have a good effect on 对……有好的影响 have no effect on 对……毫无影响 易混词辨析 effect vs affect • effect：名词,意为影响、效果 搭配：have an effect on 对…… 产生影响； take effect 生效； come into effect 开始实施 effective adj. 有效的；起作用的 effectively adv. 有效地；实际上 effectiveness n. 有效性；效用 • affect：动词，意为影响 句式：sth. affects sb./sth. 例句：The Internet has a big effect on our life. = The Internet affects our life greatly. 互联网对我们的生活影响很大。 06 Exercise 一、选用方框中的短语填空（每个限用一次） was invented；was spread；was sent；had a big effecton；developed the idea 1. The radio ____________________ in the 1890s by Guglielmo Marconi.   2. Before the radio, news ____________________ very slowly.   3. In 1901, a radio message ____________________ across the Atlantic Ocean for the first time.   4. The radio ____________________ music because it made it easier to enjoy songs from around the world.   5. Marconi ____________________ of using radio waves for communication.   was invented was spread was sent had a big effect on developed the idea 二. 单项填空 (  ) 1. The first airplane ______ by the Wright brothers in 1903, which opened the era of human flight. A. invents B. invented C. is invented D. was invented (  ) 2. The math competition was very difficult, but Tom worked it out ______ with his excellent skills. A. in seconds B. on time C. by chance D. in person (  ) 3. — Excuse me, could you tell me the ______ from here to the nearest subway station? — Sure. It’s about 500 meters. You can walk there in 5 minutes. A. price B. weight C. distance D. height (  ) 4. Lack of sleep _____ your ability to concentrate, and this bad habit has a negative ______ on your study. A. affects; affects B. effects; affects C. affects; effects D. effects; effects (  ) 5. — I think the Internet is the most important invention in human history. — ______. It has completely changed the way we live, work, and communicate. A. I don’t agree B. I’m not sure C. That’s right D. Never mind 07 Summary Summary New words invent Sentences ① Suddenly, news could be spread around the world in seconds. ② In 1901, a radio message was sent across the Atlantic Ocean for the first time. ③ It also had a big effect on music. 08 Homework Homework Need to do: 复习并将本课所学内容形成重点笔记. Choose to do: 采访你的同学或伙伴描述他们认为的最重要的发明，然后用英语完成采访描述。 Thank you! Lavf61.7.105 Bilibili VXCode Swarm Transcoder v1.3.31 Lavf61.7.106 Bilibili VXCode Swarm Transcoder v1.3.42 星越教育 null 63554.6 $