Nowadays, television has become the most popular media of human. It is also the necessary invention in our daily life. By watching TV, we can see many things happened all over the world. I agree that the advantages of watching TV are very important. But beside those benefits, there are some disadvantages that we must notice to be sure that we watch TV most effectively.
Beginning from the first one, I must say that television is one of the most important. From very long ago, people had already known how to transform information in many different ways but only when the first television programme was broadcasted, a new era had begun, the era of image. Television nowadays has been very popular, and almost every family has one. By sitting at home, watching TV, you can get a whole look all over the world. The appearance of television enriches our entertainments. Many events and competition can be watched “live” and many exclusive movies are presented as well, and you’re free to enjoy them. In addition, if you want to travel but do not have enough money, I suggest you can enjoy traveling in the TV (for example watching the discovery channel or national geography channel), they are screened 24/24.
Furthermore, the television deserves to consider as the unlimited source of information. There are a lot of scientific channel, which is suitable for all ages. It is the fastest and cheapest way to improve your knowledge. Today, Television specializes into many channels; each channel satisfies the different audience’s view such as news, sport, and film. By pressing several simple buttons, you can see your appropriate programme that fit your taste.
Everything contains good side and bad side and television has no exception. Wasting time is one of the disadvantages of watching TV. Let’s imagine : if one day , one person spends a hour watching TV without gaining any useful information , then in one year he will waste 365 hours and in 10 year is 3605 hours. With that time, you can learn several languages as well as finish some studying course. On the other hand, television programme are not always suitable for all ages. Sometimes, there are some movies contain bad information should not be watched, even by some adults. It will be extremely dangerous if parents neglect their children to discover the TV programme themselves, as they will immediately take influence of what they see. So, parents must supervise their children‘s TV watching throughout their childhood and adolescence period. In the aspect of health , spending hours watching TV is harmful to your eyesight. Why do not play some sport and breathe the fresh air .When your eyes are tired, you‘d better let them rest than continue to paste them in the screen.
In my opinion, I have reached a conclusion that nowadays, television is important. Although computer will replace it someday, but TV’s benefit to our life will be guaranteed it as the most important device, which people need, in order to be up-to-date.

Watching TV has both advantages and disadvantages. On the one hand, regarding watching TV's advantages, it is proved that TV viewers who spend a reasonable time in front of the TV screen are likely to gain a great deal of knowledge. As TV offers a wide choice of channels and programs, people could find a suitable one for their purposes such as programs for learning, for entertaining or for updating news. Moreover, watching TV is one of the easiest and most effective ways to reduce stress. Just by sitting on a couch and switching channels, people could gradually forget all their life's problems. On the other hand, spending too much time on TV could lead to numerous mental and physical health problems. Those watching TV without a proper distance could suffer eyes' diseases, while those might gain weight and become passive because they just sit still and eat junk food. Some research shows that people watching TV much more than 2 hours a day tend to be more introverted than others, which means they are afraid of real communication and interaction in society.