First of all, playing computer games will waste plenty of time. Time is very precious to us today. We should be concentrate and pay more   attention to our studies rather than wasting time playing the computer games. If we spend too much of time focus in the computer games, of course, we can't get a good result in our study, and we even no choice to choose for our further study, this will also become a big problem for us to get a good job with a high salary.

Other than that, if we spend most of our time on these computer games, we surely will get very   low marks for our exam and even will fail the exam. For this reason, we won’t be able to get a good job in our future. My friend is an example.  His name is Nam. He is a good student but when he started play game. He spends all time for play game and he did go to school. So his study becomes very bad. He fails many exams. And, now he is an unemployed. So for a steady furture, we shouldn't not allow our self to fall into computer games. We have a lot of other entertainments which can make us to release stress and will not affect our studying