| 摘要 | 第1-6页 |
| Abstract | 第6-15页 |
| Introduction | 第15-21页 |
| Chapter 1 The Definition in English Learner's Dictionary | 第21-44页 |
| ·The Nature of Dictionary Definition | 第21-26页 |
| ·The "Definition" of Definition | 第22-23页 |
| ·Logical Definition and Lexicographic Definition | 第23-24页 |
| ·Encyclopedic Definition and Lexicographic Definition | 第24-25页 |
| ·Monolingual Definition and Bilingual Definition | 第25-26页 |
| ·The Development of ELD | 第26-35页 |
| ·Dictionary and Learner's Dictionary | 第27-29页 |
| ·The Origin of ELD | 第29-31页 |
| ·Three Stages of ELD | 第31-35页 |
| ·The Pioneering ELD | 第31-33页 |
| ·The Second Generation of ELD | 第33-34页 |
| ·The Third Generation of ELD | 第34-35页 |
| ·The Definition in ELD | 第35-42页 |
| ·The Position of Definition in ELD | 第36-37页 |
| ·The Defining Principles | 第37-42页 |
| ·Conciseness | 第37-38页 |
| ·Correspondence of Syntactic Functions | 第38-40页 |
| ·Impermissibility of Circular Definition | 第40-41页 |
| ·Suitability for the User | 第41-42页 |
| ·Summary | 第42-44页 |
| Chapter 2 The Study of the Prototype Theory | 第44-68页 |
| ·The Classical Approach to Categorization | 第44-48页 |
| ·Categorization | 第44-46页 |
| ·The Classical Theory of Categorization | 第46-48页 |
| ·Lexical Definition based on the Classical Theory of Categorization | 第48-51页 |
| ·Sufficient and Necessary Conditions | 第48-49页 |
| ·Defects of the Sufficient-Necessary Conditions | 第49-51页 |
| ·The Evolution of the Prototype Theory | 第51-61页 |
| ·An Overview of Cognitive Linguistics | 第51-53页 |
| ·Wittgenstein and the Family Resemblance | 第53-55页 |
| ·The Prototype Theory | 第55-61页 |
| ·Defining Prototypes | 第55-59页 |
| ·The Sources of Prototypes | 第59页 |
| ·Characteristics of Prototypicality | 第59-61页 |
| ·Significant Notions of the Prototype Theory | 第61-67页 |
| ·Salience, Centrality and Radial Structure | 第61-62页 |
| ·Levels of Categories and Basic Level Categories | 第62-65页 |
| ·Scripts | 第65-67页 |
| ·Summary | 第67-68页 |
| Chapter 3 The Prototype-based Definition in ELD | 第68-91页 |
| ·The Application of the Prototype Theory in ELD | 第68-85页 |
| ·The Application of the Basic Level Categories as Defining Words | 第68-69页 |
| ·The Inclusion of Encyclopedic Information in Lexical Definition | 第69-72页 |
| ·The Incorporation of Prototypes in Defining Lexicons | 第72-78页 |
| ·The Adoption of Prototypical Scenarios in Defining Notions | 第78-81页 |
| ·The Application of the Prototype in Scheduling the Senses of Polysemes | 第81-85页 |
| ·The Advantages of the Prototype-based Definition in ELD | 第85-90页 |
| ·Overcoming the Defects of the Traditional Definition Style | 第85-86页 |
| ·Revealing the Distinguished Features of Notions Clearly | 第86-87页 |
| ·Avoiding Circular Definition | 第87-88页 |
| ·Simplicity | 第88-89页 |
| ·User-Friendliness | 第89-90页 |
| ·Summary | 第90-91页 |
| Conclusion | 第91-94页 |
| Notes | 第94-97页 |
| Bibliography | 第97-106页 |
| Acknowledgements | 第106-107页 |
| 攻读学位期间主要的研究成果 | 第107页 |