这种题型往往要求先说明一下现状，再对比事物本身的利弊，有时也会单从一个角度（利或弊）出发，最后往往要求考生表明自己的态度（或对事物前景提出预测）
１． 说明事物现状
２． 事物本身的优缺点（或一方面）
３． 你对现状（或前景）的看法
nowadays many people prefer a because it has a significant role in our daily life. generally, its advantages can be seen as follows. first ---------------(ａ的优点之一). besides -------------------（ａ的优点之二）.
but every coin has two sides. the negative aspects are also apparent. one of the important disadvantages is that ----------------(ａ的第一个缺点)．to make matters worse,------------------(ａ的第二个缺点)．
through the above analysis, i believe that the positive aspects overweigh the negative ones. therefore, i would like to ---------------(我的看法)．
(from the comparison between these positive and negative effects of a, we should take it reasonably and do it according to the circumstances we