鲁教版（五四制）九年级全册Unit 1 When was it invented? Section B 3a~Self Check课件(共21张PPT)

(共21张PPT)
Section
第 4 课 时 (3a~Self Check)
……………………………………
B
Unit 1 When was it invented
学习新单词：nearly
复习、巩固本单元所学的单词和短语
能够针对存在的问题想出相应的发明设想，并进行准确表述。
会写描述某项发明的文章。
Learning Goals
1
2
3
1. 发生；出现 _________________________
2. 偶然；意外地 ____________________________
3. 有道理 ____________________________
4. 毫无疑问 ____________________________
5. 突然；猛地 _______________________
6. 不但……而且…… _________________________
Revision
take place
have a point
without doubt
all of a sudden
not only...but also...
by accident
· What do you want to invent
· Why
· What is it made of/from
· What is it used for
Free talk
Ha, I want to invent a special broom.
What do you want to invent
What is it made of
It’s made of stainless steel.
It is used for flying to the sky.
What is it used for
When can it be used
If you have some-thing urgent, the traffic is very busy, then we can use it.
This kind of broom is much cheaper than the helicopter. Every-one can afford it.
How much will it cost
Think of something that you do not like to do. Then think of an invention that could help you. Make notes.
3a
1. Problem: __________________________
New invention: _____________________
What it is used for: __________________
a special pen
quickly taking notes in class
taking notes in class
3. Problem: _______________________________
New invention: __________________________
What it is used for: _______________________
2. Problem: _______________________________
New invention: __________________________
What it is used for: ______________________
a special clock
getting up early
waking me up
doing homework
a robot
doing homework with me
This special pen was invented by Liu Jie.
It has three colors and is used for …
Imagine you are a business person. Write a description of your new invention. Try to sell the invention to the class.
3b
...was invented by...
It is used for...It is useful if...
opening point
...comes with...
When you..., you just need to...
main part
I believe that...
ending
结构
This special pen was invented by Liu Jie. It has three colors and is used for taking notes quickly. It is useful if you have to write down a lot of notes.
The pen comes with a microchip that can store lots of words and sentences that you need to use.
Sample writing
When you are writing, you just need to write the short forms with the pen. Then press a button on the pen, and all the short forms will change into the actual words.
I believe that the special pen will become more and more popular.
Self Check
Complete the passage with the correct forms of the words in the box.
1
invent doubt mention website all of 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 the idea first.
invent
invent doubt mention website all of sudden
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
doubt
websites
mention
Rewrite these sentences using the passive voice.
2
1. Someone stole my watch.
________________________________________
2. They used five eggs to make this big cake.
____________________________________________
3. When did they invent the personal computer
____________________________________________
My watch was stolen (by someone).
When was the personal computer invented
Five eggs were used to make this big cake by them.
4. They asked us not to run in the hallway.
_________________________________________
_________________________________________
5. Someone took the video back to the store.
_________________________________________
_________________________________________
The video was taken back to the store (by someone).
We were asked not to run in the hallway (by them).
Find out information about an invention you would like to know more about and write sentences below.
3
Invention: _________________________________
When: _________________________________
Who: _________________________________
Purpose: _________________________ ________
in 2013
umbrella with a light
Li Meng
seeing in the rain in the dark
1. Now computers are widely used in our ______ (day) lives.
2. He mentioned _________ (hear) from her often.
3. The soup is very _______ (salt) because my mother put lots
of salt on it.
4. Since then, the ___________ (popular) of basketball has
risen quickly.
5. I have worked here for _______(near) two years.
Ⅰ.用所给单词的适当形式填空
Practice
hearing
salty
popularity
nearly
daily
Ⅱ．按要求改写句子
1. The teacher gave the students some advice. (改成被动语态)
__________________________________________________
2. He was seen to read a book in his room. (用I作主语, 改为主
动语态)
__________________________________________________
3. She was helped by all the people. (改成一般疑问句)
__________________________________________________
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
※ Preview the new words and expressions.
※ Write a passage with “be used” to introduce a
product.
Homework