| Acknowledgements | 第1-5页 |
| Abstract | 第5-7页 |
| 摘要 | 第7-8页 |
| Contents | 第8-11页 |
| Chapter One Introduction | 第11-23页 |
| ·English as a Global and Changing Language | 第11-17页 |
| ·A Brief Introduction of English Development | 第11-12页 |
| ·Worldwide English | 第12-13页 |
| ·Changing English | 第13-17页 |
| ·Economy as a Trend of Present-day English | 第17-19页 |
| ·Characteristics of PdE Development | 第17-18页 |
| ·A General Introduction to Economy of Language | 第18-19页 |
| ·Significance of Investigation | 第19-21页 |
| ·The Reason for Choosing This Topic | 第19-20页 |
| ·Aim of This Thesis | 第20-21页 |
| ·Challenge, Innovation and Limited Novelty | 第21页 |
| ·The Layout of the Thesis | 第21-23页 |
| Chapter Two Literature Review | 第23-41页 |
| ·Views on Economy in Linguistic Theories | 第23-32页 |
| ·Birth of Economy Principle and the Principle of Least Effort | 第23-24页 |
| ·Some Other Interpretations of the Principle of Economy | 第24-29页 |
| ·Minimal Structure | 第29-32页 |
| ·Views on Economy in Pragmatic Theories | 第32-37页 |
| ·Classical Gricean Theory | 第32-34页 |
| ·Neo-Gricean Theory | 第34-36页 |
| ·Relevance Theory | 第36-37页 |
| ·Development of Economy Principle in China | 第37-41页 |
| Chapter Three Application of Economy Principle in Present-day English at Linguistic Level | 第41-92页 |
| ·Reflection of Economy Principle at Phonological Level | 第41-49页 |
| ·Acoustic Sounds of English | 第41-43页 |
| ·Sound Variation within the Scope of Economy | 第43-49页 |
| ·Reflection of Economy Principle at Lexical Level | 第49-82页 |
| ·Basic Notion of Word-Formation | 第49-51页 |
| ·Economy Embodied in New Vocabulary | 第51-79页 |
| ·Economy Embodied in Transfer of Meaning | 第79-80页 |
| ·Economy Embodied in Substitution of Small Words for Big Words | 第80-82页 |
| ·Reflection of Economy Principle at Syntactic Level | 第82-92页 |
| ·Economy in Ellipsis | 第82-86页 |
| ·Ellipsis in Coordinate Constructions | 第86-88页 |
| ·Ellipsis in Complex Sentences | 第88-92页 |
| Chapter Four Application of Economy Principle in Present-day English at Pragmatic Level | 第92-103页 |
| ·Explicit and Implicit Economy | 第92-93页 |
| ·Ways of Achieving Economy in Communication | 第93-95页 |
| ·Reduction of Language Codes | 第94页 |
| ·Expansion of Language Codes | 第94-95页 |
| ·Reduction + Expansion of Language Codes | 第95页 |
| ·Analysis of Economic Pattern | 第95-99页 |
| ·Omission | 第95-96页 |
| ·Presupposition | 第96-97页 |
| ·Implicature | 第97-98页 |
| ·Intonation | 第98-99页 |
| ·Exemplification of the Economy of Language in Communication | 第99-103页 |
| Chapter Five Achieve Economy in Different Language Genres | 第103-125页 |
| ·Some Words on Language Genres | 第103-105页 |
| ·Application of Economy Principle in Advertisements | 第105-115页 |
| ·Keep Lexicon Simple | 第106-111页 |
| ·Avoid Complicated Sentences | 第111-113页 |
| ·Adopt Varied Rhetorical Devices | 第113-115页 |
| ·Application of Economy Principle in News | 第115-121页 |
| ·Use Short Words | 第116-117页 |
| ·Use Abbreviations | 第117-118页 |
| ·Use Blends | 第118-119页 |
| ·Use Affixes | 第119页 |
| ·Use Compounds | 第119-120页 |
| ·Use Words with Extended Meanings and Conversions | 第120-121页 |
| ·Application of Economy Principle in Business Correspondence | 第121-125页 |
| ·Use Abbreviations | 第122-123页 |
| ·Use Simple and Common Words | 第123-125页 |
| Chapter Six Motives of the Economy of Language | 第125-129页 |
| ·The Trend of Language Development | 第125页 |
| ·The Need of Modern Society | 第125-126页 |
| ·Result of Logical Thinking | 第126页 |
| ·The Laziness of People | 第126-127页 |
| ·The Constituent Elements of Language | 第127页 |
| ·Various Contexts | 第127-129页 |
| Chapter Seven Conclusion | 第129-133页 |
| Bibliography | 第133-135页 |
| 详细摘要 | 第135-139页 |
