TV is very important in our life. We can get to know all kinds of events around the world. We can know the weather,information, laws, knowledge and so... on. After busy work, we can watch some funny programs to relax　　TV benifits us, but sometimes it has bad influence. Some students watch TV day and night. It influences their lessons.Some programs are not good for children.　　So we should choose proper programs at proper time for people in different ages.