Face to face communication provides more information for both communicaters; for example, we can experience anger, happyness or other emotions from another's face and voice. However, communications from computers cannot have these features because we cannot see each other. But the convenience brought by computer is that we can communicate anyone we want to in any time regardless of where we are.
apparently ... mobile phones offer an instant communication way for people who are living far from each other. In other words, the social activities are now not limited to physical locations, because we can join it through mobile phones. For example, greetings by text messages, interviews by phone calls, and other activities of social network by the Internet in mobiles are all good evidences that social is being changed by mobile phones.
a major good point is that computer made our world a better place. Computers improved business efficiency, provided a new way of entertainment, promoted a closer relationship among friends and families. However, a negative side is children may see some violent and sexy content that may influence them metally and physically, as they dont have an ability to selt-restraint and so that they are very easy to be addicted to a sort of virtual world.
现在自己好好试着写一下,然后发上来给我们看看啊
百度一下 你就知道啦