必备：英语四六级作文常见类型--评论型作文(2)

                 Does good or harm                              clear

Models:
Advantages and Disadvantages of the Use of Computers
1． 描写电脑的普及状况
2． 电脑给家庭带来的好处
3． 电脑带来的问题
 
(1)Computers have become increasingly popular in the recent years. (2)According to the chart, in 2000, 68% of families owned computers, compared with 25% in 1995 and only 4% 10 years ago.
(3)Like TV, computers benefit people hugely. (4)With the computer, the home will become a library, a school, an office and an entertainment center. (5)All transactions, from banking to shopping, will be performed electronically and all information, from train schedules to discount-price goods, will be as close as the press of a key. (6)In addition to providing us many of the facilities and services we now must  , with the Internet, the computer will even let us communicate directly with other homes and with information sources worldwide. (7)Despite the increase in efficiency and convenience generated by the computer, the changes it brings could very well lead to potentially adverse consequences. (8)For example, as nearly all activities could be conducted in the comfort of our homes, we could all become hermit-like, never feeling any need to leave the house. (9)This would be unfortunate because our children especially will become so addicted to computers that they might never be exposed to social interaction.
(10)Unquestionably, the challenge of the home computer means we all should consider how we can control it, so that it won’t control us.
 
The Positive and Negative Aspects of Skyscrapers

1． 许多城市竞相建造摩天大楼
2． 人们对建造摩天大楼有不同的看法
3． 我的看法

(1)In recent years with fast economic growth, many skyscrapers have appeared in big cities of China. (2)People’s attitude towards the skyscrapers varies widely.
(3)Some think of them as a sign of economic progress and a miracle of modern architecture. (4)They also believe that building skyscrapers helps to solve the problem of the growing scarcity of land in the city, for they can obtain the maximum space per square meter of ground and meanwhile offer to the tenants offices and apartments that please them. (5)Yet others, speak of the problems skyscrapers have brought. (6)They complain that the monstrous edifices interfere with television reception, blot out the sun and create many dark sunless streets. (7)Besides, excessively large masses of human beings working in a single gigantic building overburden public transportation. (8)Lighting, heating, and air conditioning strain energy supplies, to the extent that skyscrapers become lavish consumers, and wasters, of electric power. (9)Worst of all, their reflective glasses coated with silver or gold mirror films raise the temperature of the surrounding air.