仁爱科普版九上英语Topic 3 China is the third nation that sent a person into space. Section C 课件(共19张PPT)

(共19张PPT)
Unit 4 Amazing Science
Topic 3 China is the third nation that sent a person into space.
Section C
What do you know about the spaceships
What can computers do to spaceships
Astronauts use computers to control the speed and direction of their spaceships, even the temperature.
Spaceships mainly use electronic controls.
What else can computers be used for
For instance/example, computers can be
used for…
1a 1. Tick the fields we use
the computer in.
education business
industry communication
daily life medical care
entertainment sports
Doctors can find diseases easily with the help of computers.
Can you give an example of the use of the computer in one of the fields above
In business,computers are
used to place and cancle orders.
下订单和取消订单
There is no doubt that computers are very important.
毫无疑问
Underline the topic sentence of each paragraph.
1. Since computers were invented in the USA in the 1950s, they have become very important in many areas of work and leisure.
2. Since the Internet came into being, people’s lives at home have been changed, too.
3. Computers have improved our lives, but they have brought problems, too.
Place The usage of computers
(Computers can be used to…)
In space
In hospitals
In factories
In business
control the speed and direction of a spaceship
help doctors find diseases easily and solve other problems
control the robots to do dangerous work
place and cancel orders
come into being
more and more
watch movies
thanks to
do business
instead of
chat online
make the world smaller
做买卖
形成，产生
越来越多
看电影
代替
网上聊天
使世界更小
多亏，由于
What problems have computers brought
We may get headaches or sore eyes.
We won’t have enough time to study or exercise.
Not everything on the Internet is true or good for us.
1b 2. Complete the following diagram.
computers
usage
problem
work
daily life
____________________________ of a spaceship.
help doctors _____________________________.
_______________________________ in factories.
help businessmen _____________________.
play games and __________________________.
_______________ and _____________ at home.
___________________ by sending e-mails and _______________________________.
get headaches or _____________________.
don’t have enough time __________________.
something on Internet is not ________________.
control the speed and direction
find diseases easily
control the robots
place and cancel orders
watch movies
do shopping
do business
communicate
chatting online
sore eyes
to study or exercise
true or good
Computers are important and useful.However,they must be used properly.
No computers!!!
For hospitals
For factories
For you
For business:
For the world
2 Write a short passage with the title with One Day Without Computers. The following information may help you.
Suppose you were on a special day in 2030. During the
day, there were no computers in the world. What trouble
would you have You may begin like this:
One Day Without Computers
Today, when I got up, I just turned on the computer as usual, but it didn’t work. Then I tried my brother’s PC, my parents’, even my dog’s, but none of them worked. Later, it was reported on TV that all of the computers in the world broke down today. So the world
is quite different. For instance, we can’t …
One Day Without Computers
Today, when I got up, I just turned on the computer as
usual, but it didn’t work.
Then I tried my brother’s PC, my parents’, even my dog’s,
but none of them worked. Later, it was reported on TV that all
of the computers in the world broke down today. So the world
is quite different. For instance, we can’t play games, watch
movies or do shopping at home. Besides, we can’t
communicate by sending e-mails or chatting online. Without
the help of computers, businessmen can’t place or cancel
orders online. Teachers can’t give lessons to their students.
What’s worse, robots controlled by computers can’t do
dangerous work for humans. Even the doctors can’t find the
diseases easily.
In short, we almost have trouble with everything without
computers today.
You can write it like this:
Summary
We learn: 1. Some words: doubt, tiny, inside, brain,
cancel, connect
2. Some phrases: no doubt, for instance
3. Some sentences:
(1) There is no doubt that computers are very
useful in technology and business.
(2) Computers help us at work and at home, but
they must be used properly.
We can: 1. Talk about the importance of computers.
2. Write a composition by using our imagination.
Thank you