[解析]
Dear John,
I'm sorry to hear that you're addicted to computer games,which has had a bad influence on your health. I know you worry about it very much. As a good friend, I'm willing to give you some advice.
Firstly, you should limit the time that you spend playing computer games and pay more attention to other things.【高分句型一】(限制玩游戏的时间,把精力逐渐转移到其他事情上) Secondly, you should get up and go to bed at a specific time so that you can form a habit of getting up and going to bed regularly.(规定起床和睡觉的时间,形成良好的作息习惯) Thirdly, you should do exercise for about half an hour every day to strengthen your body. I do hope that you can get rid of computer games and form a healthy lifestyle.【高分句型二】(每天锻炼半小时,增强体质)
Best wishes!
Yours sincerely,
Li Hua