2.对比论证段
　　对比论证段一般出现在对比分析类作文的第二段，其基本的句型构造是：先用2-3句话阐述第一种观点或选择的理由；然现再通过一个转折句引出第二种观点或选择，再用2-3句话阐述第二种观点或选择的理由。
　　需要注意的是，有时候对比论证段可以分为两段，第一段先提出第一种观点并进行论证，第二段再提出第二种观点并进行论证，考生在写作时可根据提纲和自己的写作习惯灵活处理。

　　例如
　　Directions : For this part , you are allowed 30 minutes to write a composition on the topic Making Friends Similar or Different ? You should write at least 120 words , and base your composition on the outline given below in Chinese :
　　1.很多人认为结交性格相似的朋友比较好。
　　2.另一些人则认为还是结交性格互补的朋友比较好。
　　3.你的看法。

　　第二段：对比论证段
　　(1) Those people who hold the former opinion believe similar friends have more common ideas and interests . (2) So , it is happier and easier for them to get along with each other . (3)However , still others hold the different opinion .(4) They argue that by making friends with different characteristics , they cam complement each other . (5) Besides , in their opinions , different friends can broaden each other's minds .