Unit 3 Computers

Today's task
I.Warming up & pre-reading
(1) How much do you know about computers?
(2) What is it?
II. Reading (Task – based learning)
III. Post reading
What are advantages and disadvantages of computers?How can we make use of it?
learning aims
Do you know them?
keyboard
mouse
USB flash disc
PC
laptop
What do you use computers for?
Computer and Internet
type your letter
Play computer games
communicate with my friends.
search useful information
listen to music
watch movies
……
laptop
Who am I?
Reading
1.In the passage, “I” refers to _________.
2.the topic sentence of each paragraph.
Paragraph I:

paragraphII:

paragraphIII:

So the whole passage is mainly about:
_________________________________.
I.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.
3 Detailed 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 offices and homes.
Computers connect people all over the world
together.
A family of computers was connected by a network.
The _________ machine was made by Charles Babbage.
began as a calculating
analytical
wrote a book to describe
grown as large as
a PC as a laptop
From the above form, we can know that the text is written in an order of ___________
time
analytical
universal
mathematical
problems
transistors
communication
trade
applications
medical operations
strong
small
wide
your understanding of sentences
Find a sentence to replace the following one (in the 1st paragraph)
People thought it was a revolution in technology and after that I had the intelligence that people gave me at that time.
__________________________________________
__________________________________________
_____________________________________
At that time it was considered a technological revolution and the start of my “artificial intelligence”.
2. My real father was Alan Turing, who in 1936 wrote a book to describe how computers could be made of work, and built a universal machine” to solve any mathematical problem.
Attributive Clause
(定语从句)
“And” 连接built和?
在1936年我真正的父亲艾伦。图灵写了一本书，讲述了怎样使我成为一台“通用机器”来解决任何数学难题。
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.
I began as a _______ machine in 1642
in France. In 1822 I was built as an
_______ machine. Then in 1936 Alan Turing
wrote a book and built a _______ machine.
As time___ ___, I was made smaller but my memory got ______ and _____. In the 1960s they gave me a family connected by a ______. Now people call it the Internet. I was used in ______ and ______ since the 1970s. Since my birth I have truly been built to serve the human race.
calculating
Analytical
universal
went by
larger
larger
network
offices
homes
Test in class
Summary
Thank
you!