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 are in. only by this way， ——（对前景的预测）。