1. Introduction
2. Minimalist Program and PP Subjects
3. Subject Status of PPs
4. Matsubara's (2001) Analysis
5. PP-Subject Constructions and Semantic Condition
5.1. Referentiality and PP subjects
5.2. Informationally Light Verbs and PP subjects
5.3. Contextual Interpretation and PP subjects
6. A Concluding Remark
References