Chapter 1 Introduction

1.1 A short review of studies on cohesion and of aspects of cohesion that have not been explored sufficiently

1.2 The aim of my present study

1.3 The organization of the book

Chapter 2 Literature Background

2.1 Introduction

2.2 Hasan（1984）and Halliday and Hasan（1985）

2.3 The limitations of Hasan's method and improvements

2.4 Parsons（1991a，1991b）

2.5 Hoey（1991）

2.6 Scott's Key Words tool

2.7 Hoey's（2001） Textual Interaction

2.8 Mann and Thompson's（1988a，1988b）Rhetorical Structure Theory

2.9 Conclusions

Chapter 3 Research Question 1 and the Method

3.1 Introduction

3.2 Research question 1 and the data

3.3 The method used to explore research question 1

3.3.1 Classifying processes in a text into chains according to the commonality of meanings they express

3.3.2 Unpacking in text nominalizations that contain nominalised processes included in chains

3.3.3 Identifying recurrent nuclei in text

3.3.4 Ranking the recurrent nuclei in text in descending order of frequency

3.3.5 Classifying processes in summaries into chains according to the commonality of meanings they express

3.3.6 Unpacking in summaries nominalizations that contain nominalised processes included in chains

3.3.7 Identifying recurrent nuclei in summaries

3.3.8 Comparing the results in A4 with that in B3 to identify the recurrent nuclei in text that are repeated in two or more summaries of the text

Chapter 4 Findings with Regard to Research Question 1

4.1 Introduction

4.2 The results with regard to research question 1

4.3 The characteristics of the recurrent nuclei in texts that are important to the texts' meanings

4.3.1 Category 1

4.3.2 Categories 1(c)，2 and 3(b)

4.3.3 Subcategory 3(a)

4.3.4 The probability of presence in the leads of the recurrent nuclei that are important to texts' meanings

4.3.5 Category 4

4.4 Conclusions

Chapter 5 Research Question 2 and Findings

5.1 Introduction

5.2 The definitions of type A and type B nuclei

5.3 Research question 2 and the method of exploring the question

5.4 The results with regard to research question 2

5.5 Examining the‘maverick' cases

5.5.1 The seven initial occurrences of type A material nuclei that express causes

5.5.2 The four initial occurrences of type A material nuclei that are part of the content of saying of verbal nuclei

5.5.3(a) The initial occurrences of two type A material nuclei that contextualize

5.5.3(b) The six initial occurrences of type B material nuclei that also contextualize

5.5.4 Proposition splitting

5.5.5 Inference

5.5.6 Proposition integration

5.5.7 Reduction

5.5.8 The remaining and final example

5.6 Conclusions

Chapter 6 Conclusions

6.1 Introduction

6.2 Areas of innovation and contribution of my present study

6.3 Patterns of lexis in a text and the meaning of the text

6.4 Information distribution in the leads

6.5 The strategies that summary writers often use to write summaries for hard news texts

6.6 Conjunctive relations and the meaning of a text

6.7 Future research avenues

Appendix A

Appendix B

References