Chapter 1 Introduction 1
1.1 Background of the Study 1
1.1.1 Functions of Logical Elements in Knowledge Construction 2
1.1.2 Complex Sentences and Knowledge Construction 3
1.2 Rationale of the Study 8
1.3 Research Objectives and Questions 11
1.4 Data Collection and Methodology 12
1.5 Organization of the Book 16
Chapter 2 Literature Review 18
2.1 Review of Studies of FCCs 18
2.1.1 Traditional Approaches to FCCs 18
2.1.2 Cognitive Linguistics 21
2.1.3 Systemic Functional Linguistics 24
2.1.4 Comment on These Approaches 33
2.2 Review of Studies of Coniunctions 35
2.2.1 Traditional Grammar 35
2.2.2 Systemic Functional Linguistics 37
2.2.3 Comment on These Approaches 44
2.3 Studies of TBs 46
2.3.1 Academic Status of TBs 46
2.3.2 A Survey of Studies ofTBs 47
2.4 Summary 49
Chapter 3 Theoretical Framework 50
3.1 KeyNotions 50
3.1.1 Metafunctions 51
3.1.2 Choice and Probabilistic 54
3.1.3 Register 55
3.1.4 Genre 58
3.1.5 Academic Language Socialization 61
3.1.6 Constructive Perspective on Knowledge 62
3.1.7 Knowledge Construction in TBs 64
3.1.8 Explanation and Verbal Reasoning 66
3.1.9 Brief Comment on These Notions 69
3.2 Analytic Framework 70
3.2.1 Expansive FCCs 72
3.2.2 Projective FCCs 74
3.2.3 Conjunctions 75
3.2.4 Projecting Verbs 77
3.2.5 Projectors 78
3.3 Reasons for Choosing SFL 79
3.4 Summary 81
Chapter 4 Expansive FCCs and Knowledge Construction（1）：Extensive FCCs and Elaborative FCCs 82
4.1 Elaborative and Extensive FCCs in Knowledge Construction 82
4.2 Details of Extensive FCCs in the Sub-Corpora 85
4.3 Extensive FCCs and Knowledge Construction 87
4.3.1 Paratactic Extensive FCCs and Their Functions 88
4.3.2 Hypotactic Extensive FCCs and Their Functions 101
4.4 Elaborative FCCs and Knowledge Construction 102
4.4.1 Elaborative FCCs in TBs 102
4.5 Comparison of Extensive FCCs and Elaborative FCCs 111
4.6 Summary 113
Chapter 5 Expansive FCCs and Knowledge Construction（2）：Enhancement FCCs 114
5.1 Enhancement FCCs and Conjunctions 115
5.2 Overall Features of Enhancement FCCs in TBs 119
5.3 Causal Relation and Knowledge Construction 124
5.3.1 Frequencies ofCausal Relation in the Corpus 124
5.3.2 Causal Relation and Knowledge Construction 127
5.3.3 Organizations ofCause and Effect 132
5.4 Conditional Relation and Knowledge Construction 136
5.4.1 Studies ofConditionals 136
5.4.2 Quantitative Results of Conditionals and Their Functions 139
5.5 Concessive Relation and Knowledge Construction 145
5.6 Temporal Relation and Knowledge Construction 148
5.7 Manner Realtion and Knowledge Construction 151
5.8 Comparison of Disciplinary Features of Enhancement FCCs 154
5.9 Summary 157
Chapter 6 Projective FCCs and Knowledge Construction 159
6.1 Projective FCCs in TBs 159
6.2 Features of Projectors 162
6.2.1 Classification of Projectors 162
6.2.2 Overall Features ofProjectors in TBs 165
6.2.3 Projectors and Knowledge Construction 171
6.2.4 Comment on Projectors in TBs 178
6.3 Projecting Verbs and Knowledge Construction 179
6.3.1 Studies ofProjecting Verbs 179
6.3.2 Classification ofProjecting Verbs 182
6.3.3 Projecting Verbs and Knowledge Construction 187
6.3.4 Modality and Tense in Projective FCCs and Their Function 194
6.4 Interaction Between Projectors and Projecting Verbs 202
6.5 Summary 208
Chapter 7 Conclusion 210
7.1 Quantitative Results and Discussion 210
7.2 Significance of the Current Study 215
7.3 Limitations and Suggestions 219
Appendix Data Samples 220
Phycorp 220
Extract 1 220
Extract 2 221
Extract 3 221
Psycorp 222
Extract 1 222
Extract 2 223
Extract 3 224
Ecocorp 225
Extract 1 225
Extract 2 225
Extract 3 226
References 228
致谢 245