Unit 6 Section B (3a-3b&self-check) 课件（人教版九年级全册Unit 6 When was it invented?)

(共16张PPT)
Unit 6 When was it invented？
Period 6 Section B （3a-3b&self-check）
（人教版）九年级
01
Learning objectives
Content
02
Lead-in
03
Writing
05
06
Pre-writing
07
Post-writing
04
08
Homework
Summary
Asseement
Learning objectives
Learn to write a description of your new invention.
Talk about the usage, appearance and materials.
Lead -in
I don’t like to ……
What kind of things you hate to do
Can you think of an invention that could help you
Pre-writing
Problem: __________________________
New invention: __________________
What it is used for: __________________
quickly taking notes in class
a special pen
taking notes quickly
While-Reading
3bImagine you are a business person. Write a description of your new invention. Try to sell the invention to the class.
How to introduce an invention
3
4
1
5
who
how
at the same time
although
because...
in order to...
so that...
There be...
color, shape, size, use
what
why
invention
2
when
in+ 年份
on+月，日，年
...was/were invented by...
...invented...
who
when
why
what
how
Sample
This special pen was invented by Cindy. It has three colors and is used for taking notes quickly. It is very useful if you have a lot to write down. The pen comes with a microchip that can store a list of common words that you will use. You can program the words you will use often into the microchip’s memory, then assign a short form to each word. When you are writing, you just need to write the short forms with the pen, press a button on the pen and the short forms will change into the actual words. The microchip can contain up to 50 words and you can make changes to the list of words whenever you need to.
Self-check
1
Complete the passage with the correct forms of the words in the box.
invent doubt mention website all of a sudden
It is often difficult to decide on the inventor of certain inventions.This is because sometimes a few people may ______ things which are nearly the same. It's hard to tell who came up with theidea first. Some inventions can also lead to other inventions_____________.So some people _______ whether the inventor came up with the idea himself or herself. They think that the inventor used someone else’s idea to create his or her invention.
That is why books or _______ usually ________ more than one inventor when giving information about inventions.
all of a sudden
invent
websites
doubt
mention
Self-check
2 Rewrite these sentences using the passive voice.
1. Someone stole my watch.
______________________________________
2. They used five eggs to make this big cake.
_________________________________________
3. When did they invent the personal computer
__________________________________________
4.They asked us not to run in the hallway.
____________________________________________
5. Someone took the video back to the store.
____________________________________________
My watch was stolen by someone.
Five eggs were used to make this big cake by them.
When was the personal computer invented by them
We were asked not to run in the hallway by them.
The video was taken back to the store by someone.
Self-check
3
Find out information about an invention you would like to know more about and write sentences below.
Invention:___________
When: ______________
Who: _______________
Purpose:_____________
scooter carriage
(滑板婴儿车)
2007年
Valentin Vodev (奥地利)
Exercises
1. The first paper __________ (make) in China in 105 AD.
2. For over 500 years the art of making paper __________ (limit) to China.
3. In 610, papermaking ______________ (introduce) into Japan.
4. Kites ___________ (know) in China about 3,000 years ago.
5. Wheelbarrows ____________ (invent) in the Han Dynasty.
6. Gunpowder _______________ (discover) by the Chinese hundreds of years ago.
7. Soccer _____________ (develop) in England in the 12th century.
was made
was limited
was introduced
were known
were invented
was discovered
was developed
Fill in the blanks with the correct form of the given verbs.
Exercises
We planted these trees in 1997. (改成被动语态)
2. He made a cake yesterday. (改成被动语态)
3. The teacher gave the students some advice. (改成被动语态)
4. He was seen to read a book in his room. (用I作主语, 改为主动语态)
5. She was helped by all the people.(改成一般疑问句)
按要求改写下列各句
These trees were planted (by us) in 1997.
A cake was made by him yesterday.
Some advice was given to the students by the teacher.
I saw him read a book in his room.
Was she helped by all the people
Summary
Useful expressions：
This special pen was invented by Liu Jie. It has three colors and is used for…
Homework
Finish writing the letter.
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