| ABSTRACT IN ENGLISH | 第1-4页 |
| ABSTRACT IN CHINESE | 第4-8页 |
| CHAPTER Ⅰ INTRODUCTION | 第8-23页 |
| 1．1 The Significance of Linguistic Studies on Maritime Treaty English | 第8页 |
| 1．2 Focus and Methods of the Thesis | 第8-9页 |
| 1．2．1 Aim of the Paper | 第8-9页 |
| 1．2．2 Tools and Methods | 第9页 |
| 1．3 Semi-auxiliaries and English Verbs | 第9-13页 |
| 1．3．1 The Division of English Verbs | 第9-11页 |
| 1．3．2 The Stares of Semi-auxiliaries in the Family of English Verbs | 第11-13页 |
| 1．4 Syntactic and Semantic Features of Semi-auxiliaries | 第13-18页 |
| 1．4．1 Syntactic Features of Semi-auxiliaries | 第13-17页 |
| 1．4．2 Semantic Features of Semi-auxiliaries | 第17-18页 |
| 1．5 Syntactic and Semantic Functions of Semi-auxiliaries | 第18-21页 |
| 1．5．1 Syntactic Functions of Semi-auxiliaries | 第18-19页 |
| 1．5．2 Semantic Functions of Semi-auxiliaries | 第19-20页 |
| 1．5．3 Special and Problem Usage of Semi-auxilairies | 第20-21页 |
| 1．6 Layout of the Paper | 第21-23页 |
| CHAPTER Ⅱ GENERAL CONSIDERATIONS ON SEMI-AXILIARIES | 第23-46页 |
| 2．1 Auxiliaries and The Auxiliary Nature of Semi-auxiliaries | 第23-29页 |
| 2．1．1 Criteria to Define Auxiliaries | 第23-26页 |
| 2．1．2 The Auxiliary Nature of Semi-auxiliaries | 第26-29页 |
| 2．2 Semi-auxiliaries and Other Verbs of Auxiliary Function | 第29-37页 |
| 2．2．1 Semi-auxiliaries and the Primary Auxiliaries | 第29页 |
| 2．2．2 Semi-auxiliaries and Modals | 第29-35页 |
| 2．2．3 Semi-auxiliaries and Catenative Verb Constructions | 第35-37页 |
| 2．3 “TENSE”,“ASPECT”, “VOICE”, and“ MOOD” of Semi-auxiliaries | 第37-41页 |
| 2．4 Semi-auxiliaries and Futurity | 第41-43页 |
| 2．5 The Definition of Semi-auxiliaries | 第43-46页 |
| 2．5．1 Marks of Semi-auxiliaries | 第43-44页 |
| 2．5．2 The Semi-auxiliaries Covered in Our Study | 第44-46页 |
| CHAPTER Ⅲ SEMI-AUXILIARIES AND MODALITY | 第46-59页 |
| 3．1 Definition of Modality | 第46-49页 |
| 3．1．1 Modality and Factuality | 第48页 |
| 3．1．2 Modality and Tense | 第48-49页 |
| 3．1．3 Modality and Logic | 第49页 |
| 3．2 Types of Modality | 第49-55页 |
| 3．3 Semi-auxiliaries and Modality | 第55-57页 |
| 3．4 Semi-auxiliaries and Modal Auxiliaries | 第57-59页 |
| CHAPTER Ⅳ ANALYSIS AND DISCUSSION | 第59-93页 |
| 4．1 The Frequencies and Use of Semi-auxiliaries in General | 第59-60页 |
| 4．2 The Distribution and Usage of Semi-auxiliaries | 第60-90页 |
| 4．2．1 Semi-auxiliaries for Epistemic Modality Expression | 第63-73页 |
| 4．2．1．1 Semi-auxiliaries for Possibility Expression | 第65-69页 |
| 4．2．1．2 Semi-auxiliaries for Logical Necessity Expression | 第69-72页 |
| 4．2．1．3 Semi-auxiliaries for Prediction Expression | 第72-73页 |
| 4．2．2 Semi-auxiliaries for Non-epistemic Modality Expression | 第73-90页 |
| 4．2．2．1 Semi-auxiliaries for Deontic Obligation Expression | 第74-79页 |
| 4．2．2．2 Semi-auxiliaries for Deontic Permission Expression | 第79-82页 |
| 4．2．2．3 Semi-auxiliaries for Neutral Dynamic Necessity Expression | 第82-85页 |
| 4．2．2．4 Semi-auxiliaries for Dynamic Volition Expression | 第85-86页 |
| 4．2．2．5 Semi-auxiliaries for Dynamic Ability Expression | 第86-90页 |
| 4．3 Central Modals and Semi-auxiliaries in MTE | 第90-93页 |
| CHAPTER Ⅴ CONCLUSION | 第93-95页 |
| APPENDIX1 | 第95-98页 |
| APPENDIX2 | 第98-99页 |
| APPENDIX3 | 第99-100页 |
| ACKNOWLEDGEMENT | 第100-101页 |
| REFERENCES | 第101-102页 |
