CHAPTER 1 INTRODUCTION 1.1 Background of the Study 1.2 Rationale 1.3 Research estions 1.4 Research Objectives 1.5 Theoretical Framework 1.6 Conceptual Framework 1.7 Scope of the Study 1.8 Definitions of Terms 1.9 Significance of the Study CHAPTER 2 REVIEW OF RELATED LITERATURE 2.1 Related Theories 2.1.1 Systemic Functional Linguistics 2.1.2 Clause 2.1.3 The Metafunctions of SFL 2.1.4 Genre Theory 2.1.5 The Genre of Persuasion and SFL 2.1.6 Development of Writing Teaching Approach 2.1.7 Vygotsky's Sociocultural Theory 2.1.8 Collaborative Writing 2.2 Review of Related Studies 2.2.1 Related Studies on Genre-Based Approach of Writing 2.2.2 Related Studies on Collaborative Writing 2.. Related Studies on Persuasion 2.2.4 Summary of the Previous Studies CHAPTER 3 RESEARCH METHODOLOGY 3.1 Research Design 3.2 Population 3.3 Sample 3.4 Research Instrument 3.4.1 Lesson Plans 3.4.2 Persuasion Textual Feature Analysis Template 3.4.3 estionnaire 3.4.4 Interview 3.5 Validity and Reliability 3.6 Collection of Data 3.6.1 litative Data Collection 3.6.2 ntitative Data Collection 3.7 Data Analysis 3.7.1 litative Data Analysis 3.7.2 ntitative Data Analysis 3.8 Pilot Study 3.8.1 The Implementation of the Pilot Study 3.8.2 Analysis of Group Written Work in the Pilot Study 3.8.3 Results of the Pilot Study and Adaption 3.9 Summary of the Research Process CHAPTER 4 THE TEACHING EFFECTS ON GROUP WRITINGS 111 4.1 Each Group's Writing Ability Development 113 4.1.1 Linguistic Analysis of Three Iterations of Group 1 4.1.2 Generic Structure Analysis of Three Iterations of Group 1