| Acknowledgements | 第1-5页 |
| Abstract | 第5-7页 |
| 摘要 | 第7-13页 |
| Chapter 1 Introduction | 第13-20页 |
| ·Scope of the present research | 第13页 |
| ·Literature review | 第13-18页 |
| ·Research objectives | 第18页 |
| ·Research methodology | 第18-19页 |
| ·Outline of the thesis | 第19-20页 |
| Chapter 2 The Evolution of American English | 第20-26页 |
| ·Introduction | 第20页 |
| ·The relationship between American English and British English | 第20-22页 |
| ·The view of "the American language" | 第20-21页 |
| ·The view of "the English language in America" | 第21页 |
| ·Two varieties of the same language | 第21-22页 |
| ·The development of American English | 第22-25页 |
| ·The historical background of American English | 第22-23页 |
| ·Settlement and language | 第22页 |
| ·Three periods of English development in America | 第22-23页 |
| ·Factors leading to the divergence of American English from British English | 第23-24页 |
| ·Geographical separation | 第23页 |
| ·The different physical conditions encountered by the settlers | 第23页 |
| ·Contact with non-English immigrants | 第23页 |
| ·Independence in politics and language | 第23-24页 |
| ·The features of American English | 第24-25页 |
| ·Inheritance from English tradition | 第24页 |
| ·Creativity | 第24-25页 |
| ·Summary | 第25-26页 |
| Chapter 3 The American Face of Harry Porter | 第26-32页 |
| ·Introduction | 第26页 |
| ·The differences in grammar | 第26-31页 |
| ·Tense difference | 第26页 |
| ·Different use of some fixed structures | 第26-27页 |
| ·Attributive clause | 第27页 |
| ·Different use of some verbs | 第27-28页 |
| ·The noun | 第28-30页 |
| ·Pronoun | 第30页 |
| ·Preposition | 第30页 |
| ·Adverb | 第30-31页 |
| ·Spelling differences | 第31页 |
| ·Summary | 第31-32页 |
| Chapter 4 Is "OK" OK in English Today? | 第32-48页 |
| ·Introduction | 第32页 |
| ·Definition of OK | 第32-36页 |
| ·Definition of OK in 7 versions of OALD | 第32-34页 |
| ·Definition of OK in MED | 第34-36页 |
| ·Definition of OK in COBUILD | 第36页 |
| ·A historical view of OK | 第36-40页 |
| ·The first stage in the history of OK | 第37-38页 |
| ·The second stage in the history of OK | 第38页 |
| ·The third stage in the history of OK | 第38-39页 |
| ·The fourth stage in the history of OK | 第39页 |
| ·The fifth stage in the history of OK | 第39-40页 |
| ·The sixth stage in the history of OK | 第40页 |
| ·The last stage in the history of OK | 第40页 |
| ·A study of the word frequency of OK based on BNC | 第40-43页 |
| ·A pragmatic view of OK in present-day China | 第43-47页 |
| ·The lecturer's OK | 第43-46页 |
| ·The popularity of OK in present-day China | 第46-47页 |
| ·Summary | 第47-48页 |
| Chapter 5 ELT in China from British English to American English | 第48-57页 |
| ·Introduction | 第48页 |
| ·The future of English | 第48-51页 |
| ·A brief introduction to the survey | 第48-49页 |
| ·Some issues raised in the survey | 第49-51页 |
| ·The development trend of American English | 第51-53页 |
| ·The increasing influence of American English | 第51-52页 |
| ·The reason why American English is playing a dominant role | 第52-53页 |
| ·Implication for ELT in China based on the above discussion | 第53-56页 |
| ·The status quo of ELT in China | 第53-55页 |
| ·Suggestions on the reform of ELT in China based on the above discussion | 第55-56页 |
| ·Summary | 第56-57页 |
| Chapter 6 Conclusion | 第57-60页 |
| ·Major issues solved in the present study | 第57-58页 |
| ·Limitations of the present study | 第58页 |
| ·Suggestions for further research | 第58-60页 |
| References | 第60-63页 |
| Papers published during 2005-2008 | 第63页 |
