随着计算机与网络的普及，越来越多的人成为网民。
Can you imagine a world without the Internet？It's surprising to think about it.
China has more than 751 million Internet users, according to the China Internet Network Information Centre.This is the first largest number of users in the world before the United States.Today，66% of Chinese “netizens” are teenagers.“They spend about thirteen hours every week online，” said Qian Hulin, an Internet expert.Doctor Song in Beijing Xuanwu Hospital said about 14% of Chinese netizens who were teens often lasted over ten hours to play online games.
The main reasons why teenagers surf the Net are to search for information, to communicate with others and to have fun.On the Internet, teenagers can find out almost anything.And surfing the Net can help students with their homework and widen their knowledge.
Li Dong, a teacher at No.41 Middle School in Shijiazhuang, likes her students to use the Internet.“When we talk in class, students who surf the Net usually know more background information than the others，” she said.
In addition, people can use the Internet to write letters or stories, send emails and chat.Many teens keep in touch with their friends online.It is cheaper than phoning somebody far away and also much quicker.
