英语作文about television不少于80词的短文~
Nowadays more and more families start to own television,and people tend to spend more and more time in front of a television.As televisions bring information and entertainment to our lives,it harms us at the same time.
Firstly,just like celephones and puters,staring at a television screen for a long period of time is extremely unhealthy for eyesights.While the young generation watches entertainment shows or dramas on the TV,they tend to get addicted to the interesting shows and forget to rest their eyes once in a while.As a result,television's development causes more glasses to be sold.Secondly,sitting on a sofa constantly,often with a bag of snack on the side,is also a bad habit that turns healthy and fresh people into fat "coach potatos."
Although television is usually enjoyable and helpful in our lives,we should also keep in mind that it is not necessarily healthy for our health and things should be done to prevent our health from being damaged.
我认认真真写的...如果字数太多就告诉我..我可以删减~
英语优秀作文：television
television-----the most pervasive and persuasive of modern technologies, marked by rapid change and growth-is moving into a new era, an era of extraordinary sophistication and versatility, which promises to reshape our lives and our world. it is an electronic revolution of sorts, made possible by the marriage of television and computer technologies.
the word "television", derived from its greek (tele: distant) and latin (visio: sight) roots, can literally be interpreted as sight from a distance. very simply put, it works in this way: through a sophisticated system of electronics, television provides the capability of converting an image (focused on a special photoconductive plate within a camera) into electronic impulses, which can be sent through a wire or cable. these impulses, when fed into a receiver (television set), can then be electronically reconstituted into that same image.
television is more than just an electronic system, however. it is a means of expression, as well as a vehicle for communication, and as such becomes a powerful tool for reaching other human beings.
the field of television can be divided into two categories determined by its means of transmission. first, there is broadcast television, which reaches the masses through broad-based airwave transmission of television signals. second, there is nonbroadcast television, which provides for the needs of individuals or specific interest groups through controlled transmission techniques.
traditionally, television has been a medium of the masses. we are most familiar with broadcast television because it has been with us for about thirty-seven years in a form similar to what exists today. during those years, it has been controlled, for the most part, by the broadcast networks, abc, nbc, and cbs, who have been the major purveyors of news, information, and entertainment. these giants of broadcasting have actually shaped not only television but our perception of it as well. we have come to look upon the picture tube as a source of entertainment, placing our role in this dynamic medium as the passive viewer.
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