Unit 3 Computers
Who Am I?
Guessing game
With the development of science and technology, many new things appear in human being’s life.
Let’s guess what they are:
1. With me you can watch different programmes just at home. I’m a machine that has a screen with moving pictures and sounds. But watching me too much is bad for your eyes.
TV set
Who Am I
2. I am a machine which moves very fast on four wheels. You need a license(执照) and must be very careful when you drive me. Rolls Royce, Benz and BMW are some famous kinds of me.
car
3. I am a machine which is a good helper in doing house work.
I wash clothes for people.
Who am I?
washing machine
4. A machine that you use to talk to other people even in a far-away place. We are connected by wire or radio. Now each of us often has a number.
Who am I?
telephone
5. It is a machine, which you can use to type your homework, draw pictures, play games, watch movies, listen to music, communicate with your friends, gather information…
computer
It is a kind of computer which can be taken conveniently like a notebook.
A laptop
What English words do you
know about computers?
What is it in English??
mouse
鼠标
What is it in English??
CPU (central processing Unit)
中央处理器
What is it in English??
Main board(主板)
What is it in English??
Display /
Monitor
显示器
computer
I
nternet
S
earch
K
eyboard
C
lick
E-
mail
B
log
B
G
ill
ates
E-
pal
搜索
键盘
点击
电子邮件
网友
博客
Who am I?
Reading
1.In the passage, “I” refers to _________.
2.the topic sentence of each paragraph.
Paragraph 1:

paragraph 2:

paragraph 3:

So the whole passage is mainly about
_____________________________.
Task 1 Scanning(略读)
a computer
Over time I have been changed quite a lot.
These changes only became possible as my memory improved.
Since the 1970s many new applications have been found for me.
Fast-reading
the development of computers.
Task 2 Careful Reading( 细读)
Read the passage more carefully
and find more information
about computers.
Then fill in the two
forms below.
The computer _____ __ _ _________ machine．
1822
Alan Turing ____ __ ___ _____ how computers could be made to work．
Computers had _____ __ ____ __ a room.
1960s
First as _ ___and then __ _ _____ computers were used in ______ and ______.
Computers connect people all over the world
together as devoted ______ and _______.
A family of computers was connected by a_______.
The _________ machine was made by Charles Babbage.
began as a calculating
analytical
wrote a book about
grown as large as
a PC as a laptop
network
offices
homes
friends
helpers
From the above form, we can know that the text is written in an order of ________
time
Let’s listen and find more information about the development of computers. Listen and fill in the blanks.

Early days (the first paragraph)
Name Function(功能)
a 1._________ machine
simplify difficult sums
an 2. _______ machine
think 3._______
a 4._______
machine
solve difficult
5.____________
___________
analytical
logically
universal
mathematical
problems
calculating
network times (the 2nd and 3rd paragraph)
6._________
my memory
tubes
7._________
transistors
small chips
since the 1970s
8.___________
have been found in many fields(领域).
9._______________; finance;
10. ____; robots; mobile phones; 11._______________; space rockets
applications
communication
trade
medical operations
It began as a ________ machine in 1642
in France. In 1822 it was built as an
_______ machine. Then in 1936 Alan Turing
wrote a book and built a _______ machine.
As time___ ___, it was made smaller but its memory grew ______ and _____. In the 1960s they gave it a family connected by a ______. Now people call it the Internet. It was used in ______ and ______ since the 1970s. Since its birth it has truly been built to help the ______ _____.
calculating
analytical
universal
went by
larger
larger
network
offices
homes
Test in class
Summary
human
race
What are advantages and disadvantages of computers?
How can we make use of it?
Should high school students surf the internet(上网)?
Discussion
Computer and Internet
type your letter
Play computer games
communicate with my friends.
search useful information
listen to music
watch movies
……
advantages
we can
communicate with friends
listen to the music
see films & watch news
play games
do shopping
save a lot of time
do a lot of useful things
Disadvantages

Some people especially the teenagers abandon (沉迷于) themselves to the computer games and chatting on the Internet. As a result, they have little time to study .
There is unhealthy informaion on the net.
You may lose your private information.
Some people use the computer wrongly.
Thank
you
for
your listening!