| Acknowledgements | 第1-5页 |
| 摘要(Abstract in Chinese) | 第5-6页 |
| Abstract | 第6-11页 |
| Chapter I Introduction | 第11-18页 |
| ·Introduction to Netspeak | 第11-12页 |
| ·Researches on Netspeak at home and abroad | 第12-13页 |
| ·The post-90s generation and non-mainstream | 第13-16页 |
| ·Introduction to the post-90s generation | 第13-14页 |
| ·The post-90s generation and their non-mainstream behaviors | 第14-16页 |
| ·Motivation of the study | 第16-18页 |
| Chapter II Literature Review | 第18-28页 |
| ·Speech community | 第18-21页 |
| ·History of the theory on speech community | 第18-19页 |
| ·Definitions of speech community | 第19-21页 |
| ·This paper's understanding of speech commnity | 第21页 |
| ·Register theory | 第21-28页 |
| ·Denotations of register | 第22-23页 |
| ·Halliday's three dimensions of register | 第23-28页 |
| ·Field of discourse | 第24-25页 |
| ·Mode of discourse | 第25-27页 |
| ·Tenor of discourse | 第27-28页 |
| Chapter III 90wall Online Forum as a Speech Community | 第28-36页 |
| ·About online forum | 第28-31页 |
| ·A brief introduction to online forum | 第28页 |
| ·Basic terminology of online forum | 第28-30页 |
| ·90wall online forum selected in this paper | 第30-31页 |
| ·Data collection | 第31页 |
| ·90wall online forum as a speech community | 第31-36页 |
| ·An aggregate of people | 第32页 |
| ·Sharing rules and attitudes | 第32-34页 |
| ·Sharing a language variety | 第34-36页 |
| Chapter IV Interpretation on 90wall Online Forum Language as a Register | 第36-63页 |
| ·Field of discourse | 第36-39页 |
| ·Tenor of discourse | 第39-43页 |
| ·Focus on power | 第39-41页 |
| ·Focus on solidarity | 第41-43页 |
| ·Mode of discourse | 第43-60页 |
| ·On the phonetic level | 第43-46页 |
| ·The use of onomatopoeias | 第44-45页 |
| ·The use of eye-dialect | 第45-46页 |
| ·On the lexical level | 第46-49页 |
| ·The use of taboo words | 第46-47页 |
| ·The use of vogue words | 第47-48页 |
| ·The use of abbreviations and acronyms | 第48-49页 |
| ·The use of inflections | 第49页 |
| ·On the syntactic level | 第49-52页 |
| ·The violation of syntactic rules | 第50页 |
| ·High frequency of first and second personal pronoun | 第50-51页 |
| ·High portion of short and simple sentences | 第51-52页 |
| ·On the graphological level | 第52-56页 |
| ·Unconventional use of punctuations | 第52-54页 |
| ·Emoticons and images | 第54-55页 |
| ·Unconventional word order | 第55-56页 |
| ·Code-mixing | 第56-60页 |
| ·Switch between English and Chinese | 第56-57页 |
| ·The use of "Martian language" | 第57-60页 |
| ·Motivation behind the use of online language of the post-90s | 第60-63页 |
| ·Strengthening solidarity | 第60-61页 |
| ·Marking identity | 第61页 |
| ·Keeping secrets from outsiders | 第61-62页 |
| ·Stressing individuality | 第62-63页 |
| Chapter V Conclusion | 第63-66页 |
| ·Summary of the study | 第63-64页 |
| ·Limitations of the study | 第64页 |
| ·Suggestions for further study | 第64-66页 |
| References | 第66-69页 |
| Appendix | 第69-91页 |
