谁帮我检查一下这篇文章有没有语法错误

谁帮我检查一下这篇文章有没有语法错误
Computers And Health
Many people have computers and most students like to use their computers.But many students don’t know how to use the computers to stay healthy.
There are fifty-six students in my class.And there are about forty-five students like playing computer games.When they have a break in school,they usually talk about how to play games.And at weekends,when they go back home,I know they switch the computer at first,and then they always play a long time.Some games are good for us.But play a long time can hurt our eyes.And most games can teach us many bad movement and idea.A student plays a computer game and then he kills himself.
But,how do we use the computer to stay healthy?
I have an idea:don’t play the big computer games,because you can indulge the games,you can also do homework,get information and many healthy things.And you can have a break once an hour.
We can learn many things on the computer.And you can listen to lots of music.If you know how to use the computer to stay healthy,computers will be your good friends!