本研究探討泰德演講集裏36個有關能源議題之演講內容。以語料為本及類型分析的研究方法來收集與分析資料。研究結果顯示出名詞佔據了最大部分的關鍵字，並且從字串分析結果中發現到大部份的演講者的目的是要說服大眾採取行動。除此之外，研究結果也顯示出大部份的演講者在開場白中，直接以破題的方式告知聽眾他的演說目的, 吸引聽眾的注意力。本研究的結果與發現提升對泰德演講中講者如何運用專業英文語彙與呈現公共演講方式的相關知識與理解, 可給語言學習者在說和寫的能力及專業英文上的學習提供參考與幫助。

This research is a case study to explore one complied corpus of 36 transcripts of TED Talks related to the ‘energy’ topic in terms of corpus-based genre analysis. The results reported that nouns take up the highest portion of keywords and the analysis of word clusters revealed that most speakers invited people to take actions. In addition, the study showed that most speakers addressed their main theme in their opening section in order to catch attention of their audiences. This study provides some insights and implications that can help learners to study spoken English as well as one specific genre related to English for Specific Purposes (ESP).

Table of Contents
Acknowledgements i
Abstract ii
Table of Contents iv
Chapter 1 Introduction 1
1.1 Introduction 1
1.2 Background and motivation 1
1.3 The purpose of the study 3
1.4 Research questions 4
1.5 Significance of the study 4
1.6 Outline of the thesis 5
Chapter 2 Literature Review 6
2.1 TED Talks 6
2.1.1 TED Talks on pedagogy 7
2.2 Speech genre and ESP 8
2.2.1 Speech genre 8
2.2.2 English for specific purpose (ESP) 9
2.3 Corpus 11
2.3.1 Characteristics of corpus-based analysis 11
2.3.2 Word frequency and keywords 12
2.3.3 Lexical diversity 12
2.4 Genre analysis 13
2.5 Previous studies of speeches 14
2.6 Summary 16
Chapter 3 Research Method 17
3.1 Corpus compilation in the study 17
3.2 Instrument of data analysis 18
3.3 How to analyze word frequency and keywords? 19
3.4 How to analyze lexical diversity and how to analyze speech genre? 19
3.5 Analytical procedures 21
Chapter 4 Results and Discussion 22
4.1 Speaking rate analysis 22
4.2 Lexical diversity in spoken genre 23
4.3 Keywords analysis in 36 speeches 24
4.4 Word clusters analysis in the spoken genre 30
4.5 Move/register analysis in the spoken genre 67
4.6 Genre analysis of 36 speeches by Hymes’ SPEAKING grid 71
4.7 Discussion: ‘so’, ‘about’,’ lot’, ‘what’,’ ok’ 88
Chapter 5 Conclusion 90
5.1. Summary of the major findings 90
5.2. Contribution of the study 92
5.3 Limitation and further research 93
References 94
Appendix 1 97
Appendix 2 98

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