1. 议论文的格式：
议论文的格式应由三个部分组成：<1> 立论部分;<2> 论证部分; <3> 结论部分。一般说来，议论文可分三个基本段落来写：第一段引出话题;第二段立论且加以论证;第三段给出明确的结论。第二段是中心段落，应试者应将主要的内容放在第二段中，同时也要注意开篇及结尾段落的完整性，且应尽量做到首尾呼应，切忌前后矛盾。
2. 段落的统一性及语篇的连贯性
(1) 段落的统一性
英语段落有一大特点，即一个段落只涉及一个主题(甚至只是一个主题的某个方面)。段落中的一个句子点出主题并说明作者对该主题的看法，而其它所有句子都是为展开该主题而给出的事实、例证、推理，它们与主题紧密相关。段落中不应有一个与主题无关的句子。英文段落的这种各个句子与主题的关联性被称作段落的统一性。请看以下两例：
(1)
Birds build their nests in all kinds of places. Some are high in trees, on the sides of buildings or on the top of hills while others on the ground, in fields or by stream banks. Birds also use various nesting materials to build their nests, including sticks, mud, stones, grass and so on. Some birds are able to change to be suitable for different conditions. They’ll build their nests wherever they can find a spot and use whatever materials they can find. But other birds will build their nests only in certain places and use only certain materials.
