Abstract 1. Introduction 2. Characteristic Properties of Bare Infinitival and Participial Complements 3. Critical Assessment of Previous Analyses 3.1. The BIC and the PC are Smaller than TP: Aspect Phrase Analysis 3.2. The BIC and the PC are as Big as TP 4. Towards Explaining the Properties in Aspect Analysis 4.1. Case Valuation of the BIC 4.2. Contrasts in Matrix Passivization and Movement 5. Conclusion References