寫作參考范文：

Watching TV has always been an important part of after school life for children, and some of them even become TV addicts. Therefore some people advocate'no TV for children'.

Of course this is understandable. Firstly, children sitting too much time in front of a screen tend to have poor eyesight and weak body due to lack of physical exercise. They can also be lost in the virtual world and be insensitive to people around them, including their parents, and this is detrimental to their family relationship and their emotional development. Another concern is about their mental development which needs various types of interactive activities, but obviouslyexcessive TV viewing cannot meet such requirement. The worst part can be some programs which are not proper for children to watch. Too many advertisements and news focusing on emergency and disasters on the screen are also a disadvantageous point for immature people who are prone to be influenced negatively.

However watching TV in moderation with proper parental supervision can be good for children. There are plenty of educational programs which can expand children's knowledge and spark their interestin exploring the world where they may not have the opportunity to visit in real life, such as the nature and wild life. TV is not only an educational source, but is also a recreational activity. It can help enrich their after class activities. For example, children are always excited to watch cartoons and they would experience the adventure together with the characters in the show. The positive effects would be enlarged if children are able to share their TV time with their parents or peers, because they would have topics in common and more communication can be followed.

In general, I'd like to conclude that whether TV is good or bad is determined by how parents manage it. If parents limit TV hours and designate some educational and interesting programs and they keep their children accompanied, healthy viewing habit would be established and positive effects would be maximized. Otherwise, watching TV can be a worrying situation.