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Unit 5 Power Of Ideas
Section A (3a-3d）
人教版 九年级上册
By Yushen
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一、语言能力
掌握核心词汇：invent, inventor, invention, spread, effect, Atlantic
掌握重点短语：of all time, in seconds, have a big effect on, for the first time, spread news
掌握核心句型：
What do you think is the most useful invention of all time
It has to be...
...made the world much smaller.
It had a big effect on...
能听懂、朗读对话，提取收音机相关发明信息；能角色扮演对话；能仿照范文介绍一项发明。
二、学习能力
学会听读抓取关键信息（发明者、时间、发明影响）；
学会用思维导图梳理发明类文本信息；
能自主合作完成口语表达任务。
三、文化意识
了解无线电发明者马可尼的历史贡献，感受发明对人类信息传播、生活、文娱的巨大改变；感受古今信息传递方式的差异，体会科技进步的价值。
四、思维品质
学会辩证评价发明的作用，培养逻辑表达能力；能对比不同发明的优缺点，形成独立观点。
教学目标
教学重难点
重点
听力、阅读中抓取发明相关关键信息；
掌握被动语态句式：information was travelled /message was sent；
运用句型谈论最喜欢、最有用的发明并阐述理由。
难点
被动语态在语境中的理解与口头运用；
有条理、分点描述一项发明带来的改变。
01
Review
high-speed train
camera
TV
laptop
plane
mobile phone
radio
The greatest inventions of the 21st century
02
Lead-in
A: What do you think is the most useful/ important invention in our life
B: I think ... is the most useful / important invention in our life. Because ...
Free Talk
invent (v)发明；创造___inventation (n) 发明
03
Presentation
3a
Read the conversation and answer question.
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.
1. What does Peter think is the most useful invention of all time
The radio
3a
Listen to the conversation and answer questions.
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.
1. Who invented the radio and when did he send the first radio message across the Atlantic Ocean
A. Guglielmo Marconi, in 1901
B. Guglielmo Marconi, in the 1890s
C. An American inventor, in 1901
2. Which invention came out partly because of the radio
A. The computer
B. The television
C. The camera
3b
Read again and complete the chart.
Invention:
___________
Who was the inventor
___________________
Guglielmo Marconi
the radio
When was it invented
___________________
In
How did it change the world
The world was made much smaller by the radio. News could be spread around the world in seconds.
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.
________________________________________________________________
__________________________________
___________________
_____________________________________________________________________
3a
Listen to the conversation and repeat and pay attention to how the key information is stressed.
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.
“有史以来、所有时代中”
几秒内、顷刻间
对……有很大的影响
第一次
3c
Please Role-play the conversation.
Show Time
3d
Choose another invention that you think is the most important and make a mind map about it. Then describe it to a partner.
Time
Internet
Inventor
No single inventor
Vin Cerf & Bob Kahn
Late 1960s: born
1990s: widely used
Changes
Faster information
New inventions
Daily life changes
Textbook
3d
I think the most important invention of all time is the Internet. It does not have a single inventor, but scientists like Vint Cerf and Bob Kahn helped develop its core technology in the late 1960s, and it became widely used by the public in the 1990s. The Internet has changed the world in many ways. First, it lets information travel around the world in seconds, so people can get news and knowledge much faster than before. Second, it made it possible for other great inventions like smartphones and online shopping to develop. Finally, it has changed how we work, study, and communicate with others, making the world feel much smaller and more connected.
Summary
NewWords:
invent v. 发明 — inventor n. 发明者 — invention n. 发明
spread 传播；effect 影响；Atlantic 大西洋
New Phrases
of all time 有史以来
in seconds 顷刻间
have a big effect on 对…… 有巨大影响
for the first time 第一次
New Sentences
What do you think is the most useful invention of all time
News could be spread around the world in seconds.
A radio message was sent across the Atlantic in 1901.
It had a big effect on music.
Exercise
1. Peter thinks ______ is the most useful invention of all time.
A. the TV B. the radio C. the computer
2. Guglielmo Marconi developed the radio idea ______.
A. in the 1890s B. in 1901 C. in the 1990s
3. The first radio message across the Atlantic was sent ______.
A. in the 1890s B. in 1901 C. in 1960
4. Which invention grew from the radio
A. The camera B. The television C. The plane
5. The radio made ______ easier for people to enjoy global music.
A. it B. that C. this
Homework
01.Must do
02.Choose to do
Choose one invention that you think is the most useful and then describe it to your partner.
熟读并背诵 1a 对话中的 3-5 个核心句子，体会对话中的情感逻辑与口语化表达。
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一、单词变形
1. ________ (invent) is my favorite subject. I want to be an ________ (invent).
2. The radio ________ (invent) by Guglielmo Marconi.
3. News can ________ (spread) all over the world quickly now.
4. The radio has a big ________ (effective) on people’s life.
二、短语英汉互译
1. of all time ____________
2. in seconds ____________
3. 对…… 产生巨大影响 ____________
4. 第一次 ____________
5. send a message across the Atlantic ____________
三、单项选择（听力同源题型）
1. Peter thinks ______ is the most useful invention of all time.
A. the TV B. the radio C. the computer
2. Guglielmo Marconi developed the radio idea ______.
A. in the 1890s B. in 1901 C. in the 1990s
3. The first radio message across the Atlantic was sent ______.
A. in the 1890s B. in 1901 C. in 1960
4. Which invention grew from the radio
A. The camera B. The television C. The plane
5. The radio made ______ easier for people to enjoy global music.
A. it B. that C. this
四、根据对话内容填空
Fu Xing asks Peter which is the most useful invention of all time. Peter says it’s the ______. Before it was invented, information travelled very slowly. After the radio appeared, ______ could be spread around the world in seconds. Its inventor is an Italian ______ called Guglielmo Marconi. He created the idea in the 1890s, and in ______, people sent a radio message across the Atlantic for the first time. Also, the radio helped create the ______, and it greatly changed global music.
五、句型转换（被动语态练习）
1. People spread news quickly with the radio.（改为被动）
2. News ______ ______ quickly with the radio.
3. Marconi sent a radio message across the Atlantic in 1901.（改为被动）
4. A radio message ______ ______ across the Atlantic in 1901 by Marconi.
5. The radio influences music a lot.（同义替换，用 have a big effect on）
6. The radio ______ ______ ______ ______ music.
六、阅读理解（改编自 3d Internet 范文）
I think the most important invention of all time is the Internet. It doesn’t have one single inventor. Two scientists Vint Cerf and Bob Kahn developed its core technology in the late 1960s. People could not use it widely until the 1990s. The Internet changes our life in three ways. First, information moves around the world in seconds, so we learn news and knowledge faster. Second, it makes new inventions like smartphones and online shopping possible. Third, it changes how we work, study and talk with friends, making the whole world connected.
判断正 (T) 误 (F)
( ) 1. The Internet has only one inventor.
( ) 2. People widely used the Internet in the late 1960s.
( ) 3. The Internet helps people get information much faster.
( ) 4. Smartphones are one invention developed because of the Internet.
( ) 5. The Internet doesn’t change people’s way of studying.
七、书面表达
题目：The Most Useful Invention in My Eyes
要求：
选择一项发明（radio/Internet/mobile phone/high-speed train 等）；
包含：发明者 / 诞生时间、两点以上对世界的改变；
词数 60-80 词，语句通顺，可使用本节课句型。
九上Unit 5 Power Of Ideas Section A (3a-3d)课堂练习参考答案：
一、单词变形
1. Invention; inventor 2. was invented 3. be spread 4. effect
二、短语英汉互译
1. 有史以来 2. 顷刻间、几秒内 3. have a big effect on 4. for the first time
5. 发送跨大西洋信息
三、单选
1.B 2.A 3.B 4.B 5.A
四、短文填空
radio;news; inventor; 1901; television
五、句型转换
1. was spread 2. was sent 3. has a big effect on
六、阅读判断
1.F 2.F 3.T 4.T 5.F/ 让教学更有效 精品试卷 | 英语学科
教学目标
（一）语言能力
掌握核心词汇：invent, inventor, invention, spread, effect, Atlantic
掌握重点短语：of all time, in seconds, have a big effect on, for the first time, spread news
掌握核心句型：
What do you think is the most useful invention of all time
It has to be...
...made the world much smaller.
It had a big effect on...
能听懂、朗读对话，提取收音机相关发明信息；能角色扮演对话；能仿照范文介绍一项发明。
（二）学习能力
学会听读抓取关键信息（发明者、时间、发明影响）；
学会用思维导图梳理发明类文本信息；
能自主合作完成口语表达任务。
（三）文化意识
了解无线电发明者马可尼的历史贡献，感受发明对人类信息传播、生活、文娱的巨大改变；感受古今信息传递方式的差异，体会科技进步的价值。
（四）思维品质
学会辩证评价发明的作用，培养逻辑表达能力；能对比不同发明的优缺点，形成独立观点。
二、教学重难点
重点
听力、阅读中抓取发明相关关键信息；
掌握被动语态句式：information was travelled /message was sent；
运用句型谈论最喜欢、最有用的发明并阐述理由。
难点
被动语态在语境中的理解与口头运用；
有条理、分点描述一项发明带来的改变。
三、教学准备
多媒体 PPT（课件图片：高铁、相机、电视、笔记本、飞机、手机、老式收音机、无人机）、黑板、练习题单
四、教学过程
Step1 Lead-in
图片展示各类现代发明：high-speed train, camera, TV, laptop, plane, mobile phone, radio, drone
师生自由问答：
T: What inventions can you see Do you know any great inventions
核心句型抛出：What do you think is the most useful invention in our life
引导学生用 I think...is the most useful invention. Because... 简单发言，引出本节课主题 —— 伟大发明。
新单词讲解：invent (v.) 发明；inventor (n.) 发明者；invention (n.) 发明
Step2 Pre-task
出示老式收音机图片，简单介绍 radio，抛出问题：
Do you know who invented the radio How did it change people’s life
预习短语：of all time 有史以来；in seconds 几秒内；have a big effect on 对…… 有巨大影响；for the first time 第一次
预判听力 / 阅读重点：需抓取三类信息：发明名称、发明者、发明带来的改变。
Step3 3a Listening & Reading
活动 1 听力选择题
播放对话录音，学生完成 2 道听力单选，核对答案，讲解做题技巧：圈画人名、年份、物品名词。
What does Peter think is the most useful invention of all time
A. TV B. radio C. mobile phone
Who invented the radio and when was the first transatlantic radio message sent
A. Marconi, 1901 B. Marconi, 1890s C. American inventor, 1901
活动 2 精读对话，完成 3b 表格填空
学生再次默读对话，独立完成表格，全班核对，梳理文本逻辑：
Invention: the radio
Inventor: Guglielmo Marconi
Developed the idea: in the 1890s
First cross-Atlantic radio message: in 1901
Three influences of radio:
① It made the world much smaller; news spread worldwide in seconds.
② It helped develop other inventions like TV.
③ It made it easier for people to enjoy global music.
活动 3 朗读跟读（3c）
播放录音，学生逐句跟读，重读关键信息（radio, Guglielmo Marconi, 1901, television, music）；小组分角色角色扮演对话。
Step4 3d Presentation
示范：思维导图介绍互联网 Internet
Time: late 1960s invented; 1990s widely used
Inventor: Vint Cerf & Bob Kahn (no single inventor)
Changes: fast information; new inventions (smartphone); change work/study/communication
给出范文，学生梳理写作逻辑：发明名称→发明者 & 时间→三点改变
小组任务：挑选一项发明（高铁 / 手机 / 电脑 / 无人机等），绘制简易思维导图，两人一组口头介绍。
Show Time：2-3 组学生上台展示口头描述。
Step5 Summary & Homework
课堂总结
词汇：invent, inventor, invention, spread, effect
核心句型 + 被动语态例句
分层作业
必做：熟读背诵对话 3-5 个核心句子；完成课后基础练习题
选做：挑选一项你认为最重要的发明，写 5 句话英文介绍，下节课分享
五、板书设计
Unit5 Section A 3a-3d
Words
invent v. 发明 — inventor n. 发明者 — invention n. 发明
spread 传播；effect 影响；Atlantic 大西洋
Phrases
of all time 有史以来
in seconds 顷刻间
have a big effect on 对…… 有巨大影响
for the first time 第一次
Sentences
What do you think is the most useful invention of all time
News could be spread around the world in seconds.
A radio message was sent across the Atlantic in 1901.
It had a big effect on music.
六、教学反思
学生能否快速抓取听力 / 阅读关键信息？
被动语态口头运用是否存在障碍？
口语输出环节学生参与度如何，是否需要更多句型支架？

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