Disadvantages: 1 Excessive use of the Internet is not good for people's health and social interaction. Carnegie? Robert from Mellon University? Kraut and his colleagues evaluated some subjects' personalities one or two years after they started using the Internet. They found that the more time people spend online, the less communication they have with their relatives, the fewer friends they have in real life, and they will feel lonely and depressed. 2. Spend a lot of time chatting online and playing games. If you don't have time to study, socialize with friends or even sleep, you will skip classes and stay up late, and your grades will plummet. Experts say that surfing the Internet for a long time is easy to consume energy and brain power to the extreme, leading to a series of problems such as frequent headaches, migraine, visual impairment, "mouse hand" and "computer face". The first harm of teenagers surfing the Internet is that it will affect their eyesight. According to statistics, the myopia rate of students who often surf the Internet is about 60%. The second biggest harm is the radiation released by computers, which is quite harmful. The first debater of the opposing side: We think that the disadvantages of surfing the Internet outweigh the advantages because there are many places that are not suitable for us. After discussion, we summed up the following disadvantages of surfing the Internet: First, the rapid rise of electricity and telephone bills is a common problem in families now. After investigation, the family telephone charges for long-term Internet access are all above 200 yuan. Not only that, surfing the Internet may also cause conflicts between parents and children. Moreover, if you browse some unhealthy websites, it will seriously affect the physical and mental health of teenagers, which will easily lead students to go astray, neglect their studies, and even lead to some related diseases such as poor eyesight and lack of sleep. Here, we know that the disadvantages of surfing the Internet outweigh the advantages. The second debater: Online games affect our normal study and will fascinate us. In the end, I will play with things and give up my studies. This is because our teenagers don't have strong self-control ability and need the help and guidance of their parents, so surfing the Internet will not pay off! Third debater: Teenagers will waste a lot of time surfing the Internet, which will lead to a decline in academic performance. Don't say that surfing the internet is helpful for learning. If surfing the internet can really help you improve your grades, why does the country invest so much manpower and material resources to improve our educational institutions? Even if you can learn knowledge online, why come to school with your schoolbag on your back every day? Wouldn't it be better to go home and study online? Save your parents thousands of dollars for your school every year! The fourth debater of the opposing side: excessive use of the internet is not conducive to people's health and social interaction. Carnegie? Robert from Mellon University? Kraut and his colleagues evaluated some subjects' personalities one or two years after they started using the Internet. They found that the more time people spend online, the less communication they have with their relatives, the fewer friends they have in real life, and they will feel lonely and depressed. So the disadvantages of surfing the internet outweigh the advantages. Therefore, surfing the Internet does more harm than good to us.