Unit 9 When was it invented? Section A

(共23张PPT)
Unit 9
When was it invented
（Section A 1a-2c）
马庄中学 赵如岗
Think and answer :
Who is your favorite scientist？
My favorite scientist is Edison ,
because he invented thousands of things that
have changed our life a lot.
light bulbs
Edison
(1879)
读作：eighteen seventy-nine
Talk about the history of inventions.
Language Goals:
A:I think the telephone was invented before the car.
B: I think the car was invented after the telephone.
5
2
4
1
3
1a: Number the pictures in the order you think when they were invented.
calculator
Do you have every thing in your family
Work hard , you will have them one day.
In fact , when I was a kid we didn’t have these things in my family. They were expensive , we couldn’t afford them even though they had been invented.
1b
Listen and match the inventions
with the dates.
a
b
e
d
c
1876
1885
1927
1971
1976
d
a
b
e
c
pairwork
Read the model and then make your own conversation
A: When was the telephone invented
B: It was invented in 1876.
A: What is it used for
B: It is used for talking with others.
A : Who was it invented by
B: It was invented by Bell.
be used for doing sth. 被用来做…
be used to do sth.
Eg. It is used to talk with others.
travelling.
in 1885
Carl Bens
When, who, what use
Beld
1927
Watching and learning many things
When, who, what use
1971
Kelif
counting
When, who, what use
high heels
adjustable heels
adjustable 可调整的
ice cream scoop
heat 加热
scoop
slippers
a battery
batteries
operate 操作
2a
3
1
2
2b: listen again and match the items in
columns A,B and C.
changing the style of a shoe
Julie Thompson
heated ice cream scoop
seeing in the dark
Jayce Coziar and Jamie Ellsworth
battery-operated slippers
scooping really cold ice cream
Chelsea Lanmon
shoes with adjustable heels
What is it used for
Who was it invented by
invention
Discuss:
The car was invented in 1885.(一般过去式)
The telephone is used for talking with others.（一般现在时）
He has been trained to understand many instructions. （现在完成时）
Teenagers should be allowed to choose their own clothes .（情态动词后）
This kind of machine is being made in the factory.
(现在进行时态）
be +动词的过去分词，表示被动，译为“被….”, 构成被动语态。 注意动词be在不同的时态和不同句型中的适当形式。句型变换通过系动词或助动词完成。
主动句与被动句之间的转换
I cleaned the blackboard. 主语 +谓语动词 + 宾语
The blackboard was cleaned ( by me ) 主语 +谓语动词 +介词+ 宾语
把下列的句子变为被动语态的句子：
1、They speak English in Canada .
2、People used wood for making tables.
3、They are making computers in the USA.
English is spoken in Canada(by them).
Wood was used for making tables.
Computers are being made in the USA.
把被动句变否定
Computers aren’t being made in the USA.
a pen that listens and writes
New invention:
Use:
It can listen to the writer and
write by itself.
Price :
$ 50
music candle
activity glasses
temperature cup
summary
1. we learned some new words.
2. we also the grammar---passive voice.
1. 完成同步练习。（Page 93-94）
2. 预习3a 课文中的生词。