1). 介绍电脑的用途，字数80字左右。
范文1.Computers
It is known to us all that the computer is the most important invention in the 20th century. It has been developed a lot since it appeared. Also, our daily life has greatly changed because of it.
A computer can think and remember things like man, but it is millions of times faster than human begins. As a result, computers have been used in the fields of agriculture(农业), industry(工业), education(教育) and so on. For example, we can learn our lessons at home by using a computer instead of going to school.
Computers have entered our daily life. So it is important for us to learn how to use a computer. And we must start right now.
范文2：Computers
The computer is a wonderful machine. They are already widely used in industries and in universities. They are used in many ways.
Computers can do many kinds of work. For example, computers can helps us do maths problems quickly. Some problems are too hard for us to work them out, but computers can. A scientist can ask computers some questions, and the computers can answer on the screen.
In a car-factory computer tells the robots how to do with the cars.
Computers are very useful. So many parents buy computers for their children. They hope computers can help them improve their studies in school, but some children dont do as what parents want them to do. Because they used the computers for surfing on the Internet and spend too much time playing computer games instead of learning. It does not good for their eyesight. So their parents complain about computers not help children to study but also make them fall behind.
In many companies computers instead of workers to work. So many people lose their jobs. So many workers think computers bring them a lot of trouble.
If computers are good for us or bad for us its hard to say so I hope computers will be used in the right way.
2).介绍因特网（Internet）的主要用途：
信息：看国内外新闻、获取其他信息；
通讯：发e-mail、打电话；
学习：上网上学校、阅读各种书籍、自学外语；
娱乐：欣赏音乐、观看体育比赛、玩棋牌游戏；
生活：购物、聊天（have a chat）、交友。
On the Internet
The Internet is becoming more and more important in our daily life. On the net, we can learn news both at home and abroad and all kinds of other information as well. We can also send messages by e-mail, make phone calls, go to net school, read different kinds of books and learn foreign languages by ourselves. Besides, we can enjoy music, watch sports matches and play chess or cards. On the net, we can even do shopping, have a chat with others and make friends with them. In a word, the Internet has made our life more colourful.