Part Five: Time and Aspects时与态 Chapter 26 Ptesent, Past, and Future现在、过去、将来 Chapter 27 The Perfective Aspect完成态 Chapter 28 The Transformative Aspect变化态 Chapter 29 The Experiential Aspect经历态 Chapter 30 The Progressive Aspect进行态 Chapter 31 The Durative Aspect持续态