文档介绍：Computers
-Vocabulary, Warming up & Writing
Unit 3 Book 2 人教课标版
Objectives
Enlarge the vocabulary about computerse development of ________ and __________(科技），computers have entered our life.
7. Hackers are said to start a computer _____(病毒）.
8. Nowadays you can _______(上传）and ________（下载）information from the net easily.
elete
science
technology
virus
upload
download
Part II Warming-up
the Development
of Computers
An abacus
A calculator
A huge computer
A PC
A notebook
Computer (laptop)
A PDA
A Robot
An abacus is an old calculating（计算） machine used in China until now.
A calculator is a new calculating machine which can solve a large number of mathematical problems.
A huge computer is built to solve some mathematical problems. But it is too big.
A PC is a personal computer which can solve all kinds of problems and is widely used now.
A notebook computer is a kind of useful computer which can be taken conveniently（方便） like a notebook.
A PDA, Personal Digital（电子的） Assistant, is a digital tool used to help to deal with personal work.
What’s next?
carry things
work in wars
work for us in Mars
listen to music
Watch movies
& TV plays
communicate with…
Activity 2 Thinking
Q: In what ways is the computer used？
do shopping
search for …
play computer games
Besides, we can … with computers
send e-mails instead of letters;
read news at home and abroad;
do word processing（进行文字处理）;
take distance education（远程教育）;
download resources online.
Part III Writing
1. People say computers bring us more advantages than disadvantages. Do you think so?
advantages
disadvantages
A
B
Such as :
Send an e-mail
It is bad for your eyes.
Activity 3 Group work
Advantages
use a computer for school work
use the Internet to search for useful information
play games on the computer
send emails to friends
download music and films
surf the web for fun
make friends and chat with others
do shopping on line
read news both at home and abroad, read books an