一单元　议论文
　四、六级议论文简介
　　Lesson 1　Supplying Good Topic Sentences
　　Lesson 2　How to Write an Introduction
　　Lesson 3　Cause and Effect
　　Lesson 4　Comparison and Contrast
　　Lesson 5　Classification
　　Lesson 6　Definition
　　Lesson 7　Providing Examples
　　Lesson 8　Supplying Good Conclusion
二单元　描述文
　四、六级描述文简介
　　Lesson 1　Describing a Person
　　Lesson 2　Describing an Event
　　Lesson 3　Describing a Place
　　Lesson 4　Describing a Process
三单元　说明文
　四、六级说明文简介
　　Lesson 1　How to Distinguish Exposition from Other Styles
　　Lesson 2　Exemplificative Exposition
　　Lesson 3　Informative Exposition
　　Lesson 4　Definitive Exposition
　　Lesson 5　Instructive Exposition
　　Lesson 6　Comparative Exposition
　　Lesson 7　Exposition of Classification
四单元　图表作文
　四、六级图表作文简介
　　Lesson 1　Describing Information in a Table
　　Lesson 2　Describing Information in a Curve Graph
　　Lesson 3　Describing Information in a Bar Chart
　　Lesson 4　Describing Information in a Pie Chart
五单元　应用文
　四、六级应用文简介
　　 Lesson 1　Different Types of Writing
　　 Lesson 2　Formal Letter Writing
　　 Lesson 3　Letters of Complaint and Letters of Response
　　 Lesson 4　Writing Invitations and Replies
　　 Lesson 5　Writing a Letter of Thanks
　　 Lesson 6　Announcement
　　 Lesson 7　Writing a Letter of Application
　　 Lesson 8　Application & Resfm6
　　 Lesson 9　Writing a Speech
参考文献