Preface; Acknowledgements; Chapter 1: The Category of That-less clauses; 1. Clause Structure; 2. A Question; 3. Outline of the Work; Notes; Chapter 2: Argument Clauses; 1. Introduction; 2. Arguments for the IP-Hypothesis; 3. The ECP Account of the Distribution of That-Less Clauses; 4. Explaining the Distribution of IP; 5. Chapter Summary; 6. Appendix: Lexical Restrictions; Notes; Chapter 3: Relative Clauses; 1. Introduction; 2. The Structure of Contact Clauses; 3. Subject Contact Clauses; .4. Explaining the Distribution of Subject Contact Clauses; 5. Chapter Summary; Notes; Chapter 4: Extraction Theory; 1. Introduction; 2. The That-Trace Effect; 3. Previous Accounts; 4. Implications for Head-Government; 5. Chapter Summary; Notes; Chapter 5: Concluding Remarks; 1. Introduction; 2. Distribution of Non-Root IP; 3. Extension to Bare Infinitives; Notes; Bibliography; Index