爱华网所谓三段式就是将一篇书面表达按三段的写作模式谋篇布局。就整体篇章结构而言，如何把握较大的写作空间，三段式的写作模式为最佳选择。三段式的模式写法通常为：
1.第一段开门见山，提出要解决的问题或观点，或者把时间，地点，人物和主要事件及时点出。
2.第二段要摆出事实或提出论据，或者把事情发展的经过详细写出来。
3.最后一段，得出结论或理由。
注意：要学会使用过渡词。过渡词犹如"桥梁"和"粘合剂 "。恰当地使用过渡词可避免结构松散，层次分明，表意不清等弊端，使文章条理清楚，文字连贯流畅。常用的过渡词有：
递进型： also, (and)besides, what's more, moreover, furthermore, in addition, even, what's worse, worse still, to make matters worse, for the worse,not only …but also等;
解释型：that is (to say), in other words, or，namely, if fact, in reality, as a matter of fact等;
转折型：however, but, yet, nevertheless, instead, on the coutrary,on the other hand 等;
列举型：firstly…secondly…finally, on the one hand, on the other hand, for one thing, for another 等
举例型：for example, for instance, such as, that is, like, take… for example等;
因果型：because (of), since, now that, thanks to, due to; thus, therefore, as a result (consequence),so… that,so that等;
让步型：though, although, in spite of, despite 等;
顺序型：first…next…and then…finally, first…then…after that…finally 等;
并列型：and, both…and, or, either…or, as well as,等
时间型：afterwards, soon, later, the moment/ immediately/ on doing, hardly…when, no sooner…than 等
总结型：in a word, to sum up, in short, on the whole, in conclusion 等
见解型：in my opinion, personally speaking, as far as I am concerned，I'm sure 等
条件型：if, as long as, so long as, on condition that , unless 等
