本书由8个TPO、1个ONLINETEST和1个MODELTEST组成，共10个单元。每个单元下面的内容版块包括：文章小结、难度估计、思维导图、逐题解析（题目翻译、题型分类、具体解析）、词汇（核心词汇、词组、学术词汇和词汇练习）。相比前面三版，第四版进一步完善每个题目的解析过程，并且增添了词汇练习部分，帮助学生掌握在阅读过程中碰到的词汇，增加词汇量。
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