1. Unit9 When was it invented?
Section A

2. Museum

3. Invention Museum

4. How much is it?

5. How much is it? 18

6. Rule
Only one group that gets the most
scores(分数)can enter the museum.

7. part 1
Guessing: What is it?

8. Guessing: What is it?

9. Guessing: What is it? Microwave oven
It is used for cooking and heating food
(加热)

10. What food can be heated in it?

11. What is it used for?
calculator
It is used for counting.

12. They are used for giving light.
What are they used for?
light bulbs
They are used for giving light.

13. What is/are … used for?
It’s/They’re … used for…
part 2

14. alarm clock It’s an annoying invention.
Because it wakes me up when I’m sleeping.

15. I think computer is the most
helpful invention. Because it helps
me search the information that I
need.

16. What do you think is the most helpful/annoying inventions?
part 3
A survey:
What do you think is the most
helpful/annoying inventions?
Name
Helpful
inventions
Why
Annoying inventions
why

17. Useful expressions:
A: What do you think is the most
helpful/annoying invention?
B: I think the most helpful invention
is…
A: Why is that?
B: Well, it gives/helps people…

18. part 4
Who was (telephone) invented by?
It was invented by Bell.
inventors
inventions
Papermaking
Plane
Washing machine
Light bulb
Car
Telephone
Henry Ford
Edison
Bell
Ts’ai Lun
Wright brothers
fisher

19. When was it invented?
1971
1976
1885
1976
1927

20. 1b b b e e a a d d c c Listen and match the inventions with the dates.
1876
1885
1927
1971
1976 a a d d c c

21. When was the car invented? It was invented in 1885.
part 5
1885
1927
1976
1876
1971

22. Chinese inventions

23. How many inventions do you know?
Group work:
How many inventions do you know?
What
When
Who
Be used for
Printing
Tang Dynasty 朝代
Chinese
Making copies

24. shoes with adjustable heels
battery-operated
slippers
电池供电
的拖鞋
heated
ice cream scoop
加热的
冰激凌勺
shoes with adjustable heels
可调节
后跟的鞋

25. 2a
Listen and number the inventions in
the order that you hear. 2 3 1

26. 2b Listen again. Match the inventions with their inventors and uses.
Who was it/ were they invented by?
Chelsea Lanmon
Jayce Coziar and Jamie Ellsworth
Julie Thompson
What is it/ are they used for?
scooping really cold ice cream
seeing in the dark
changing the style of the shoes
Invention
shoes with adjustable heels
battery-operated slippers
heated ice cream scoop

27. music candle activity glasses temperature cup Challenge:
Try to be an inventor!
music candle
activity glasses
temperature cup

28. Welcome !

29. { 被动语态 The passive voice. 被动语态的构成: be动词+ (及物动词的) 过去分词
am (is, are) + done
was (were) + done {
一般现在时
一般过去时

30. Homework:
Describe one of your inventions
And then write it down.