| Acknowledgements | 第1-5页 |
| Abstract | 第5-6页 |
| 摘要 | 第6-9页 |
| Chapter One Introduction | 第9-13页 |
| ·Research background | 第9-10页 |
| ·Purpose of the study | 第10-12页 |
| ·Research questions | 第12-13页 |
| Chapter Two Critical Literature Review | 第13-25页 |
| ·Discourse and discourse analysis | 第13-14页 |
| ·Critical discourse analysis (CDA) | 第14-16页 |
| ·History and aims of CDA | 第14-15页 |
| ·Different Methodology and schools of CDA | 第15-16页 |
| ·Wodak’s Discourse-Historical Approach (DHA) | 第16-21页 |
| ·What is “critical” in DHA? | 第16-17页 |
| ·Notions of power, ideology and their relationships with language in DHA | 第17-18页 |
| ·Procedures of analysis of DHA | 第18页 |
| ·Linguistic study instrument: Halliday’s Systemic Functional Grammar (SFG) | 第18-21页 |
| ·Defining classification | 第19-20页 |
| ·Defining modality | 第20-21页 |
| ·Racism in American Immigration issues | 第21-24页 |
| ·Defining race and racism | 第21-22页 |
| ·Discourse-analytical framework to racism | 第22-23页 |
| ·Racism in American immigration history | 第23-24页 |
| ·Review of databases | 第24-25页 |
| Chapter Three Methodology | 第25-30页 |
| ·Description and collection of data | 第25-27页 |
| ·Justification for sampling | 第27-28页 |
| ·Procedure of data analysis | 第28-30页 |
| Chapter Four Discussion and Findings | 第30-45页 |
| ·Quantitative analysis and discussion of data | 第30-33页 |
| ·Qualitative analysis and discussion of data | 第33-43页 |
| ·Descriptive and interpretive analyses of two sample texts | 第33-42页 |
| ·Explanative contrast of the two case studies | 第42-43页 |
| ·Findings | 第43-45页 |
| ·The linguistic naming and referring of persons or social groups | 第43页 |
| ·Arguments and argumentation schemes | 第43-44页 |
| ·The ideolog ical perspective and the social-historical background | 第44-45页 |
| Chapter Five Conclusions | 第45-48页 |
| ·Summary of the research | 第45页 |
| ·Significance of the research | 第45-46页 |
| ·Limitations of the research | 第46-47页 |
| ·Areas for future research | 第47-48页 |
| Reference | 第48-53页 |
| Appendix | 第53-57页 |
