(共20张PPT)
人教版九年级上册
Unit 6 When was it invented
SectionA 1a-2c
Unit 6 When was it invented
SectionA 1a-2c
Invention Museum
Let’s see some great inventions!
It is used for making paper.
paper-making
Let’s say!
Who：Cai Lun
When: 105 A. D.
Who was it invented by
When was it invented
It was invented by…
It was invented in…
inventor
Cai Lun ________ paper-making.
invented
Paper-making ____ _________by Cai Lun.
was invented
Let’s say!
Who：Bi Sheng
When: the 9th century
printing
Who was it invented by
When was it invented
It was invented by…
It was invented in…
Let’s say!
When: the 9th century
What: wars
When …
It …
gunpowder
What is it used for
It is used for…
Let’s say!
When: the 11th century
What: telling people directions
When…
It …
What is it used for
It is used for…
car
computer
TV
telephone
Let’s say!
Let’s listen!
Listen and match the inventions with the years.
_____ 1876
_____ 1885
_____1927
_____1971
d
a
c
b
Alice
Grandma
The telephone was invented in 1876.
Let’s listen!
Listen and judge. Write T for true, F for false.
1.Grandma didn’t have a TV because it wasn’t invented then.
2.Grandma had a computer when she was a kid.
F.
The TV _____ _________ ______ ______, I think.
afford
was invented
Well, did you have a TV
it was expensive
They were expensive in those days.
around
1927
No, we couldn’t ______ one.
one TV
Let’s listen!
Listen and judge. Write T for true, F for false.
1.Grandma didn’t have a TV because it wasn’t invented then.
2.Grandma had a computer when she was a kid.
F.
F.
it was expensive
Well, I know that you didn’t have a computer , because we learned in school that personal computers was invented in 1971.
You’re right. But I have one now!
didn’t have
Practice
John von Neumann
A: When was the ... invented
B: It was invented in ....
A: Who was it invented by
B: It was invented by ....
A: What is it used for
B: It is used for…
Let’s talk!
When: 1971
Who: Atanasoff
What: getting information
computer
When: 1885
Who: Benz
What: driving
car
When: 1925
Who: Baird
What: getting information
TV
When: 1876
Who: Bell
What: making phone calls
telephone
Let’s say!
low heel
heel
shoes with lights
shoes with special heels
hot ice-cream scoop
runs on electricity
/i /
/u /
high
/ lek tr s ti/
The style can be changed!
/aI /
Let’s listen!
Listen and number the inventions [1-3] in the order you hear them.
2
1
3
Carol
Alex
Listen again and complete the chart below.
Invention What is it/are they used for
shoes with special heels _________ the style of the shoes
shoes with lights seeing _____________
hot ice-cream scoop ________ really cold ice-cream
Let’s listen!
changing
in the dark
serving
What do you think of these inventions
The special pen was invented by Miss Liu. It is used for checking homework quickly. Teachers have much homework to check every day, so this pen can make it easier for them to finish the work.
New Inventions Wanted!
a Special Pen
Let’s work in groups!
The… was/were invented by ….
It is / They are used for…
….
In my classmate’s introduction，he/she
used passive voice (被动语态） ☆☆☆
introduced something useful and meaningful ☆☆
spoke fluently(流利地) ☆
Total ______☆
To be a small inventor!
Problem you may have:
can’t take notes quickly in class
have problems memorizing English words
too much homework
…
e.g. The special pen was invented by Miss Liu. It is used for checking homework quickly. Teachers have much homework to check every day, so this pen can make it easier for them to finish the work.
Small inventions
could make our life easier!
Invention Museum
谢谢
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