帮我改错这几个英语句子.

帮我改错这几个英语句子.
1.I think If the increasing use of computers is of benefit to students depends on how to use them.
2.If so ,conputer are necessary for students.Because they own computers and know how to use conputers.They can understand teachers who use computers to teach students.
3.Nowadays,as computers become more and more popular.Many college students are addicted to the conputer.
4.Some people agree,the others are against.
5.They can use computers study more knowledge quickly and conveniently.
6.They waste much time on it.Play computer games influence their study.It also bad for their eyes.
7.If they don't use computer properly,it's bad for them.Such as,they may spend too much time on computers .
8.Students can look up everything what they want to know on the Internet.