i was only nine years old when i learnt how to use a computer. my mother is my first teacher. i know how to type, how to copy a file, and how to visit a web site on the internet. one day, mom was not at home.

　　i turned on the computer and began to learn how to chat on net. the first one i met there was a boy called tom. he greeted me politely. when he knew that i was only a 9-year-old girl, and almost knew nothing about chatting on net,he started showing me how to use the chatting tools, how to download, and how to send e-mails. i learnt a lot from him.