| 摘要 | 第5-6页 |
| Abstract | 第6页 |
| List of Abbreviations | 第7-14页 |
| Chapter 1 Introduction | 第14-21页 |
| 1.1 Background of the Study | 第14页 |
| 1.2 Objective of This Study | 第14-15页 |
| 1.3 Significance of This Study | 第15-16页 |
| 1.4 Research Method | 第16页 |
| 1.5 Definitions and Terminologies | 第16-20页 |
| 1.5.1 Token,Type and Hapax | 第16-18页 |
| 1.5.2 Type-token Ratio | 第18-19页 |
| 1.5.4 Lemma | 第19页 |
| 1.5.5 Tokenization and Lemmatization | 第19-20页 |
| 1.5.6 Residual Error | 第20页 |
| 1.6 Layout of the Thesis | 第20-21页 |
| Chapter 2 Literature Review | 第21-40页 |
| 2.1 Distinctions between Spoken and Written Language | 第21-24页 |
| 2.1.1 Difference between Spoken Language and Written Language in Function | 第21-22页 |
| 2.1.2 Difference between Spoken Language and Written Language in Form | 第22-24页 |
| 2.2 Previous Studies on Quantitative Lexical Description | 第24-40页 |
| 2.2.1 The Non-parameter Model and Parameter Model | 第25-27页 |
| 2.2.2 The Non-power Model | 第27-31页 |
| 2.2.2.1 Orlov's Model | 第27-28页 |
| 2.2.2.2 Torquist Model | 第28-30页 |
| 2.2.2.3 fZM Model | 第30-31页 |
| 2.3.3 The Power Model | 第31-37页 |
| 2.2.3.1 Guiraud's Law | 第32-33页 |
| 2.2.3.2 Herdan's Model | 第33-35页 |
| 2.2.3.3 Tuldava's Model | 第35-36页 |
| 2.2.3.4 Brunet's Model | 第36-37页 |
| 2.3.4 LNRE Distributions and LNRE Models | 第37-40页 |
| Chapter 3 Data Collection and Processing | 第40-45页 |
| 3.1 Corpus Description | 第40-42页 |
| 3.1.1 A General Introduction of BNC Corpus | 第40-42页 |
| 3.1.1.1 The BNC Spoken Corpus | 第41-42页 |
| 3.1.1.2 The BNC Written Corpus | 第42页 |
| 3.2 Tools for Data Processing | 第42-43页 |
| 3.3 Procedures for Data Processing | 第43-45页 |
| Chapter 4 Results and Analysis | 第45-75页 |
| 4.1 The Study of Lexical Distribution of Individual Texts in BNC Spoken Corpus | 第45-51页 |
| 4.1.1 The Lexical Distribution of Individual Texts in BNC Spoken Corpus | 第45-50页 |
| 4.1.2 Comparison between Vocabulary Size for Sample Corpus from BNC Spoken Corpus and Written Corpsu | 第50-51页 |
| 4.2 Lexical Densities of BNC Spoken and Written Corpus as Represented by TTR | 第51-60页 |
| 4.2.1 The TTR of Individual Texts in BNC Spoken Corpus and the Distribution of TTR | 第51-55页 |
| 4.2.2 The TTR of Individual Texts in BNC Written Corpus and the Distribution of TTR | 第55-58页 |
| 4.2.3 Comparison of Lexical Densities between BNC Spoken Corpus and BNC Written Corpus | 第58-60页 |
| 4.3 Vocabulary Growth Model for BNC Spoken Corpus | 第60-75页 |
| 4.3.1 Vocabulary Growth Model for BNC Spoken corpus | 第60-63页 |
| 4.3.2 Test of Fitness to the Existing Vocabulary Growth Models of Power Function | 第63-71页 |
| 4.3.3 General Discussion of Three Mathematic Models of Power Models | 第71-75页 |
| Chapter 5 Conclusion | 第75-78页 |
| 5.1 Major Finding of the Study | 第75-76页 |
| 5.2 Suggestions for Further Study | 第76-78页 |
| References | 第78-83页 |
| Appendices | 第83-87页 |
| Acknowledgements | 第87-88页 |
| Resume | 第88页 |
