本书石综合教程第4册，共设十二个单元，包括四个独立的听说单元和八个读写单元，即可综合学习、全面展开，又可因时因地分开使用或选择学习，便于教学双方根据学习条件和课时量的多少各取所需、灵活使用。

Plan of the Book
Unit 1 Talking About What Happened
unit 2 Book Reports
Unit 3 Official and Business Letters
Unit 4 Expressing Determination and Assurance
Unit 5 News Reports
Unit 6 Contracts and Agreements
Unit 7 Making Comparisons
Unit 8 Survey Reports
Unit 9 Business Commercials
Unit 10 Saying Goodbye and Farewell
Unit 11 Instructions
Unit 12 Research Papers