| Abstract | 第4-5页 |
| 摘要 | 第6-9页 |
| 1. Introduction | 第9-12页 |
| 1.1 Background of the Study | 第9页 |
| 1.2 Research Objective and Questions | 第9-10页 |
| 1.3 Significance of the Study | 第10页 |
| 1.4 Organization of the Thesis | 第10-12页 |
| 2. Literature Review | 第12-19页 |
| 2.1 Previous Studies of Abstracts | 第12-16页 |
| 2.1.1 Purposes and Types of Abstracts | 第12-14页 |
| 2.1.2 Structure of Abstract | 第14-15页 |
| 2.1.3 Studies on Abstracts from Cross-Cultural Concerns | 第15-16页 |
| 2.2 Previous Studies of Cohesion and Coherence | 第16-19页 |
| 2.2.1 Text | 第16页 |
| 2.2.2 The Concept and Types of Cohesion | 第16-17页 |
| 2.2.3 Coherence in Academic Writing | 第17-19页 |
| 3 Theoretical Framework | 第19-28页 |
| 3.1 Congruent Form and Metaphorical Form | 第19-20页 |
| 3.2 Halliday's Classification of GM | 第20-23页 |
| 3.2.1 Interpersonal Grammatical Metaphor | 第20页 |
| 3.2.2 Ideational Grammatical Metaphor | 第20-23页 |
| 3.3 Reclassification of IGM | 第23-24页 |
| 3.4 Nominalization | 第24-28页 |
| 3.4.1 The Concept of Nominalization | 第24-25页 |
| 3.4.2 The Types of Nominalization | 第25页 |
| 3.4.3 The Coherence Function of Nominalization | 第25-28页 |
| 4. Research Design | 第28-45页 |
| 4.1 Purpose of the Research | 第28-29页 |
| 4.2 Subject Selecting and Data Collection | 第29-33页 |
| 4.3 Research Method | 第33-39页 |
| 4.3.1 Qualitative Research | 第36页 |
| 4.3.2 Quantitative Research | 第36-39页 |
| 4.4 Instrument | 第39-41页 |
| 4.5 Validity and Reliability | 第41-43页 |
| 4.5.1 Validity | 第41-42页 |
| 4.5.2 Reliability | 第42-43页 |
| 4.6 Explanation of the Variables | 第43-45页 |
| 5. Data Analysis | 第45-64页 |
| 5.1 Descriptive Statistics and Data Processing | 第45-46页 |
| 5.2 Data Analysis on the Basis of the Degree of Coherence in Meaning of the Subject | 第46-50页 |
| 5.2.1 Analysis on the Basis of the Degree of Coherence in Meaning of Corpus A | 第46-47页 |
| 5.2.2 Analysis on the Basis of the Degree of Coherence in Meaning of Corpus B | 第47页 |
| 5.2.3 Comparison Analysis on the Basis of the Degree of Coherence in Meaning of Corpus A and B | 第47-50页 |
| 5.3 Data Analysis on the Basis of the Nominalization Frequency of the Subject | 第50-55页 |
| 5.3.1 Analysis on the Basis of the Nominalization Frequency of Corpus A | 第50-52页 |
| 5.3.2 Analysis on the Basis of the Nominalization Frequency of Corpus B | 第52-53页 |
| 5.3.3 Comparison Analysis on the Basis of the Nominalization Frequency of Corpus A and B | 第53-55页 |
| 5.4 Correlation Analysis of the Degree of Coherence in Meaning and the Nominalization Frequency | 第55-64页 |
| 5.4.1 Correlation Analysis of the Degree of Coherence in Meaning and the Overall Nominalization Frequency | 第56-58页 |
| 5.4.2 Correlation Analysis of the Degree of Coherence in Meaning and the Variants of Nominalization Frequency | 第58-64页 |
| 5.4.2.1 Correlation Analysis ofE candN | 第58-59页 |
| 5.4.2.2 Correlation Analysis ofE candN | 第59-61页 |
| 5.4.2.3 Correlation Analysis ofE candN | 第61-62页 |
| 5.4.2.4 Correlation Analysis ofE candN | 第62-64页 |
| 6. Conclusion | 第64-67页 |
| 6.1 Major Findings | 第64-66页 |
| 6.2 Implications | 第66页 |
| 6.3 Suggestions for Further Research | 第66-67页 |
| Reference | 第67-71页 |
| Appendix I | 第71-74页 |
| Appendix II | 第74-77页 |
| Appendix III | 第77-78页 |
| Acknowledgement | 第78页 |
