2、驳斥性议论文(Pro-and-Con Essay)。 驳斥性议论文主要就有争议的观点发表自己的议论。在写作此类作文时, 要注意从正反两个方面对这些具有争议的观点进行分析, 然后再明确地提出自己的观点。例如:

Is TV a Plus or a Minus

TV is not only a convenient and cheap service of entertainment, but also a splendid mass medium of communication. People only have to pay once to buy the TV set, then they can sit at home enjoying the items on TV. All they have to do is to push a button or turn a knob, and they can see plays, films, operas and shows of every kind. TV keeps us well informed about current events at home and abroad and the latest development in science and technology. The most distant countries and the strangest customs are brought right into our room. On TV everything is much more living and much more real. As a matter of fact, it has become so much a part of human life that a modern world without television is unimaginable. Some people even say that life without television is not worth living.

Some people argue against TV. They think the TV viewers need do nothing. The viewers does not even have to use his legs if he has a remote control. Many people are glued to seats to look at the movements on TV. They become so dependent on its pictures that it begins to control their lives. As a result, TV is taking up too much of a person's life and making him lazy, not to mention its harmful influence upon him, such as items of violence and pornography on television in some countries. From hxw.red.

On the whole there are more advantages than disadvantages in the use of TV. Yet different people may have different attitudes toward TV. But we must realize that television in itself is neither good nor bad. Its value to people and society depends on how we look at it.

好学英文网点评：上文是一篇驳斥性的议论文, 电视是好是坏, 这是一个颇具争议的题目, 在这篇短文中, 作者通过评论他人的观点来说明自己观点的正确, 要读者接受自己的观点。第一段提出了认为电视对人有利的一些人的看法, 第二段讲述了认为电视对人有害的一些人的观点, 在正反两方面的基础上, 作者在第三段提出了自己的观点, 并认为自己的观点是全面正确的。