Claudia Ross is Professor of Chinese at the College of the Holy Cross, Massachusetts, USA. Her publications include Modern Mandarin Chinese Grammar: A Practical Guide, co-authored with Jing-heng Sheng Ma; Modern Mandarin Chinese Grammar Workbook, co-authored with Jing-heng Sheng Ma and Baozhang He(2006, 2014); Outline of Chinese Grammar (2004); and Traditional Chinese Tales: A Course in Intermediate Chinese (2001). Baozhang He is Associate Professorof Chinese at the College of the Holy Cross, Massachusetts, USA. His publications include Difficult Grammar Knots Unravelled (2015), co-authored with Nansong Huang and Wenzi Hu, Modern Mandarin Chinese Grammar Workbook (2006, 2014), co-authored with Claudia Ross, Jing-heng Sheng Ma, and Pia-Chia Chen; and Elementary Chinese (2006), co-authored with Pei-Chia Chen. Pei-Chia Chen is Lecturer and Academic Coordinator of the Chinese program at UC San Diego, USA. Her publications include Elementary Chinese (2006), co-authored with Baozhang He; and Modern Mandarin Chinese Grammar Workbook (2014), co-authored with Claudia Ross, Jing-heng Sheng Ma, and Baozhang He. Meng Yeh is Teaching Professor in the Center for Languages and Intercultural Communication at Rice University, USA. Her publications include Chaoyue: Advancing in Chinese (2010) and Communicating in Chinese: An Interactive Approach to Beginning Chinese, Student Lab Workbook (1999).