人教版九年级全册Unit 6 When was it invented？Section A 课件(共13张PPT，无音频)

(共13张PPT)
Unit6 When was it invented
SectionA1A—2d
人教版九年级英语
Look at the things below .In what order do you think they were invented
A:I think the TV was invented before the car.
B:I think…….
a
b
c
d
1876____
1885____
1927____
1971____
c
b
d
a
Listen and match the inventions with the years .
Change the roles and practice .
A:When was the telephone invented
B:I think it was invented in 1876 .
一般过去时的被动语态: 1. 肯定式 主语+ was were+及物动词的过去分词 +by.
2.疑问句Was Were +主语 +及物动词的过去分词。
Rewrite these sentences using the passive voice.
1.Someone stole my watch .
_____________________________.
2.When did they invent the personal computer
________________________________________.
3.Our teacher asked us not to talk in class.
_________________________________________.
4.Thomas Edison invented the light bulb ..
My watch was stolen by someone .
When was the personal computer invented
We were asked not to talk in class .
The light bulb was invented by Thomas Edison .
6:Columbus discovered the new world .
The new world was discovered by Columbus .
5.They took many photos on the Great Wall last year .
Many photos were taken on the Great Wall last year by them .
Thomas Edison is a great _______ ,He______ _ many things in his life ,The light bulb is his great_______.
Listen and look at these interesting inventions .Do you think what they are used for
What are the shoes with lights used for
I think they________________________.
inventor
invented
invention
are used for seeing in the dark
What are the shoes with special heels used for
I think
they are used for changing the style of your
heels and used for raising or
lowering the heels .
What is the hot ice- cream scoop used for
I think___________________________________.
it is used for serving really cold ice-cream .
Hey Roy ,the subject for my school is ''Small inventions that changgd the world”.
Can you help me think of an invention
With pleasure ! The Zipper !
Paul;
Roy ;
Is it really such a great invention
Think about how often it is used in our daily lives .you can see zippers on dresses ,trousers shoes ,bags…almost everywhere.
Paul ;
Roy ;
you do seem to have a point …
Of course ! I thought about it because I saw a website last week. The poineers of different inventions were listed there .For example it mentioned that the zipper was invented by Whitcomb Judson in 1893 .But at that time , it wasn’t used widely .
Paul ; So when did it become popular
Roy ; Around 1917 .
Paul ;
Roy ;
Do the following exerises .
1 . The blender is used for ______( make ) banana milk shake .
making
was invented
daily
Who
was
invented
by
What
are
used
3. Electricity is becoming more and more important in our
（ day ) lives .
4 . Paper was invented by Cai Lun .( 对划线部分提问)
paper
2. The car ___________(invent ) in 1885 .
5. Sunglasses are used for keeping out the sunshine . (对划线部分提问）
sunglasses for

Thank you