| Acknowledgements | 第5-6页 |
| Abstract (in English) | 第6-7页 |
| Abstract (in Chinese) | 第8-13页 |
| Chapter One Introduction | 第13-17页 |
| 1.1 Research Background | 第13-15页 |
| 1.2 Significance of the Study | 第15-16页 |
| 1.3 Organization of the Thesis | 第16-17页 |
| Chapter Two Literature Review | 第17-41页 |
| 2.1 Discourse Markers | 第17-27页 |
| 2.1.1 Definitions of Discourse Markers | 第17-19页 |
| 2.1.2 Characteristics of Discourse Markers | 第19-24页 |
| 2.1.3 Functions of Discourse Markers | 第24-27页 |
| 2.2 Classifications in the Study of Discourse Markers | 第27-29页 |
| 2.3 Studies of Discourse Markers | 第29-35页 |
| 2.3.1 Studies of Discourse Markers Abroad | 第29-32页 |
| 2.3.2 Studies of Discourse Markers at Home | 第32-35页 |
| 2.4 Theoretical Framework | 第35-41页 |
| 2.4.1 Relevance Theory | 第35-38页 |
| 2.4.2 Interlanguage Theory | 第38-41页 |
| Chapter Three Methodology | 第41-49页 |
| 3.1 Research Questions | 第41-42页 |
| 3.2 Instruments of the Research | 第42-45页 |
| 3.3 Research Procedure | 第45-49页 |
| Chapter Four Data Analysis | 第49-73页 |
| 4.1 Comparison of the Use of DMs by Learners ofBasic Level and Native Speakers | 第49-59页 |
| 4.1.1 Comparison of the Use of DMs in CEM 4 and CEEP | 第49-50页 |
| 4.1.2 Comparison in Types of DMs in CEM 4 and CEEP | 第50-54页 |
| 4.1.3 Comparison in Frequencies of DMsin CEM 4 and CEEP | 第54-56页 |
| 4.1.4 Comparison ofDM Positions in Sentences in CEM 4 and CEEP | 第56-59页 |
| 4.2 Comparison of the Use of DMs by LearnersofAdvanced Level and Native Speakers | 第59-67页 |
| 4.2.1 Comparison of the Use of DMs in CEM 8 and CEEP | 第59-60页 |
| 4.2.2 Comparison in Types of DMs in CEM 8 and CEEP | 第60-63页 |
| 4.2.3 Comparison in Frequencies of DMs in CEM 8 and CEEP | 第63-65页 |
| 4.2.4 Comparison ofDM Positions in Sentencesin CEM 8 and CEEP | 第65-67页 |
| 4.3 Analysis of the Comparative Results of the Chinese Learners | 第67-73页 |
| 4.3.1 Analysisof DM Types | 第68-70页 |
| 4.3.2 Analysisof DM Frequencies | 第70-71页 |
| 4.3.3 Analysisof theDM Positionsin Sentences | 第71-73页 |
| Chapter Five Results and Discussion | 第73-81页 |
| 5.1 Differences Between Learners of Basic Level and Native Speakers | 第73-76页 |
| 5.2 Differences Between Learners of Advanced Level and Native Speakers | 第76-78页 |
| 5.3 Differences Between Learners at Different Levels | 第78页 |
| 5.4 Summary | 第78-81页 |
| Chapter Six Conclusion | 第81-87页 |
| 6.1 Major Findings | 第81-83页 |
| 6.2 Limitations of the Research | 第83-84页 |
| 6.3 Pedagogical Suggestions | 第84-87页 |
| Bibliography | 第87-93页 |
