Unit 4 Topic 1 When was it invented?Section B 课件(共25张PPT，内嵌音频) 2024-2025学年英语仁爱版九年级上册

(共25张PPT)
Unit 4
Amazing Science
Topic 1 Section B
学习目标
重点探究
自主学习
学习导航
当堂检测
课堂总结
拓展提升
新课导入
Do you know who invents light bulb, radio and airplane
学习目标
能熟悉并正确运用本课时的重点单词和短语
能进一步巩固一般过去时的被动语态
能用英语谈论各项发明
自主学习
New words and expressions
blub n. 电灯泡
airplane n. 飞机
hard-weaing adj. 耐磨的
Korea n. 朝鲜；韩国
Can you guess what modern inventions they are
It looks like a pear, but it isn’t a kind of fruit. It is used for giving light in the dark.
A:When was it invented
B: It was invented in 1897.
A: Who invented it
B: It was invented by Thomas Edison.
a light bulb
the first radio
modern radio
—When was it invented
—It was invented in 1895.
—Who invented the radio
—Guglielmo Marconi.
—When was it invented
—It was invented in 1903.
—Who invented the airplane
—Wilbur and Orville Wright.
重点探究
1a Look, listen and say.
Michael: Look, a light bulb!
Jane: Yeah. it is widely used by people everywhere. Do you
know when it was invented
Michael: It was invented in 1879.
Jane: Who invented it
Michael: Thomas Edison. It's said that he invented more than two
thousand things during his life.
Jane: What about the radio
Michael: The radio was invented by Guglielmo Marconi in 1895.
Jane, let's go this way. Look! An airplane, but it's
different from today's.
Jane: Yes. It was invented by Wilbur and
Orville Wright in 1903.
Read and answer.
1.When was a light bulb invented
2.What was invented by Guglielmo Marconi
3.What did Wilbur and Orville Wright invent And when did
they invent it
It was invented in 1879.
The airplane was invented by them in 1903.
The radio was invented by him.
1b Listen to 1a and choose the correct answers.
( ) 1. Where are Michael and Jane
A. In the science museum.
B. At the school library.
C. In the zoo.
D. In the park.
( ) 2. Which object is not mentioned in the conversation
A. Light bulb. B. Airplane.
C. Television. D. Radio.
A
C
1c Read 1a and complete the table.
Invention Inventor Year
light bulb
Guglielmo Marconi
1903
radio
airplane
Thomas Edison
Wilbur and
Orville Wright
1879
1895
You may begin like this:
It is widely used by people everywhere. It was invented in 1879 by Thomas Edison. It’s said that…
1d Discuss with your classmates the inventions listed in
1c. Let them guess which invention you are describing.
Pair Work
bulb Thomas Edison
1879
radio Guglielmo Marconi
1895
airplane Wilbur and Orville
Wright 1903
A：It was invented by ……in……
B：It must be ……
The first jeans were produced in 1855. At that time, they ______________(not call) jeans and they were just hard-wearing pants designed for workers. The pants __________ (make) of the brown cloth. This kind of cloth ____ usually ______(use) for making tents. Nowadays, their materials have been changed so that it feels more comfortable. And many different jeans styles ____ also ________(create). They ____________(design) not only for workers but also for teenagers and women. Later jeans are popular all over the world.
were not called
were made
was
used
are
created
are designed
2 Fill in the blanks with the proper forms of the
given words.
A. Karl Benz
C. Alexander Graham Bell
B. John Baird
Invention
Inventor
Year
a.1926
b.1876
c.1885
3 Listen to the three passages. Match the pictures
with the following information.
rocket cotton hospital model
satellite camera laptop plastic
4a Read the following words. Listen and check the vowels.
A: `When was the `digital camera `developed
B: It was `developed in the `1970s.
A: Is the `digital camera `developed in `Korea
B: `No.
A: `Where was it `developed
B: It was `developed in `Japan.
4b Listen and read the following sentences aloud, paying
attention to the stress and intonation. Then use the words
in 4a to make up similar conversations.
laptop / Japan / around 1985
A: When was the laptop developed
B: It was developed around 1985.
A: Is the laptop developed in America
B: No.
A: Where was it developed
B: It was developed in Japan.
Look and talk about the picture.
Group Work
camera/around 1975/America
mobile phone/1973/America
A: When was the … developed
B: It was developed…
A: Is the … developed in …
B: No.
A: Where was it developed
B: It was developed in …
Language points
拓展提升
1. It is widely used by people everywhere.
电灯在各地被 人们广泛的使用。
be used by… 意为“被……使用”by后接人或物（强调使用者 ）
e.g.Recorders are often used by English teachers.
be used for ... 被用来…… 是由“use sth. for sth. / doing sth.”结
构转变而来,介词for在这里表示用途或作用, 后面可以接名词、
代词或动词-ing形式。
e.g. This machine can be used for cutting grass.
这个机器可以被用来割草。
be used as意为“被用作为……，被作为……使用”
e.g. English is used as a foreign language in China.
2. It’s said that he invented more than two thousand things during his life.
据说他（托马斯·爱迪生）一生中发明了两千多种东西。
It’s said that… 据说……
e.g. It’s said that she lived to be over 100 years.据说他活了100多岁。
it是形式主语，真正主语是that引导的从句。
e.g. It is said that you have sent him three letters.
据说你已经给他发了三封信。
类似的结构还有: It’s reported that... 据报道……
during one’s life 某人一生，相当于in one’s life
e.g. Lei Feng did a lot of good things during his life.
雷锋在他一生中做了许多好事。
3. Jane, let's go this way.
go this way 走这边，相当于take/come this way
4. Look! An airplane, but it's different from today's.
be different from 与……不同
e.g. My pen is different from you. 我的笔和你的不同。
当堂检测
1. The light bulb is w______ used by people everywhere.
2. Thomas Edison i_________ the light bulb in 1879.
3. It’s s_____ that he invented more than two thousand
things during his life.
4. The airplane was invented by Wilbur and Orville
Wright in 1903. It’s d_______ from today’s.
idely
nvented
aid
ifferent
一、根据首字母及句意补全单词。
课堂总结
进一步巩固一般过去时的被动语态
英语谈论各种发明
Unit 4 Topic 1
Section B