Clearly if we are to participate in the society in which we live we must communicate with other people . A great deal of communication is performed on a person-to-person basis by the simple means of speech . If we travel in buses , buy thing in shops , or eat in restaurants , we are likely to have conversations where we give information or opinions , receive news or comment ,and very likely have our views challenged by other members of society .

Face-to-face contact is by no means the only form. of communication and during the last two hundred years the art of mass communication has become one of the dominating factors of contemporary society . Two things , above others , have caused the enormous growth of the communication industry . Firstly , inventiveness has led to advances in printing , telecommunications , photography , radio and television . Secondly , speed has revolutionized the transmission and reception of communications so that local news often takes a back seat to national news , which itself is often almost eclipsed（黯然失色）by international news .

No longer is the possession of information confined to a privileged minority . In the last century the wealthy man with his own library was indeed fortunate , but today there are public libraries . Forty years ago people used to flock to the cinema , but now far more people sit at home and turn on the TV to watch a programme the is being channeled into millions of homes .

Communication is no longer merely concerned with the transmission of information . The modern communication industry influences the way people live in society and broadens their horizons by allowing access to information , education and entertainment .The printing , broadcasting and advertising industries are all involved with informing , educating and entertaining .