He holds a doctorate degree in Applied Sociolinguistics. His main publications include Discourse Analysis of a Novel: Theory and Method and Sociolinguistic Perspectives of Politeness in Communication. He is a member on the editorial board of The Asia TEFL Journal, International Journal for the Scholarship of Teaching and Learning and Journal of English as an International Language. His research interests include Discourse Stylistics, Cross-Cultural Pragmatics and TESOL Pedagogy.