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(共25张PPT)
Unit 6 When was it invented
Section A (1a-2d)
人教版九年级（全）
Learning Objectives
1. introduce an invention using passive voice (past tense);
2. talk about the function of an invention using the structure “be
used for”.
By the end of the class, we will be able to:
What were the four great inventions in ancient China
compass
gunpowder
printing
papermaking
In what order do you think they were invented
originated in the Western Han Dynasty
Cai Lun in the Eastern Han Dynasty improved the paper making technique
originated in Sui and Tang Dynasty
movable-type printing was invented in Song Dynasty
was invented in the mid Tang Dynasty
originated in the Warring States period
was invented in Song Dynasty
Can you name some of modern inventions
modern
inventions
Among all the modern inventions, four inventions have changed people’s lives a lot.
How did they change people’s lives Choose one and discuss with your partners.
E.g. Personal computers made tasks faster and communication easier.
Telephones allowed instant communication over long distance.
It connected people together and made people feel closer.
In what order do you think they were invented Discuss them with your group. Then number them [1-4] (1=first, 4=last).
A: I think the TV was invented
before the car.
B: Well, I think the TV was
invented after the car.
4
2
1
3
Look at the picture. What are the girl and her grandmother talking about
____ 1876
____ 1885
____ 1927
____ 1971
这些年份怎
么读？
“千”年怎么读？如2003, 2010, 2024。
Listen and match the inventions with the years.
____ 1876
____ 1885
____ 1927
____ 1971
d
a
c
b
Role-play the conversation.
1876
1885
1927
1971
Alexander Bell
Karl Benz
J.L Baird
John Neumann
A: When was ... invented
B: It was invented in ...
A: Who was ... invented by
B: It was invented by ...
Here are some interesting inventions. Guess what is it / are they used for
Shoes with special heels
Shoes with lights
hot ice-cream scoop, runs on electricity
Listen and number the inventions [1-3] in the order you hear them.
3
1
2
Listen again and complete the chart below.
changing
in the dark
serving
Make conversations using the information in 2b.
A: What are they used for
B: They’re used for ...
Look at more interesting inventions. What are they used for
It’s not only a door but also a ping-pong table.
It’s used for playing ping pong in a narrow space.
It’s not only a chair but also a goal（球门）.
It’s used for playing football while sitting.
It’s a drinking tie. It’s used for drinking anytime and anywhere.
They are tableware pen caps. They can change your pen to a fork, a spoon or a knife instantly.
Which of these interesting inventions do you think is useful in our daily lives
Look at this invention. What is it Where can you see it
zipper
Read the conversation and answer the questions.
1. Who invented the zipper
2. When was the zipper invented
3. When was it first widely used
Whitcomb Judson invented the zipper.
It was invented in 1893.
It was widely used around 1917.
How to introduce an invention
Name of the invention
Name of the inventor
Year invented
Purpose of the invention
Influence of the invention
Stories of the inventor
have a point 有道理
e.g. Well, you know, he does have a point.
pioneer n. 先锋，先驱
it mentioned that 它提到
Homework
Choose an invention that you think is useful. Write a short paragraph to introduce it. You can also put a picture of that invention beside your introduction.
THANK YOU!

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