To have a structure: such as first, second, third; geographically, north, south, east, west; compare and contrasts; our side versus their side; negative and positive; 要有一个结构:可以分一二三点;可以从地理上分东南西北;比较与对比;我方与他方;正面与反面;
To label the materials such as jokes, funny anecdotes, favorite sayings, interesting statistics; 将材料归类整理,如笑话、趣事、名人名言、有趣的数据;