Acknowledgements
This study is a partial fulfillment of a doctoral dissertation in English Language Studies at Suranaree University of Technology, Thailand. It would not have been completed without useful support and encouragement of the following individuals and organizations. First and foremost, we would like to express our heartfelt gratitude to Office of the Higher Education Commission, Thailand for a government scholarship, entitled Strategic Consortia for Capacity Building of University Faculties and Staff (CHE-PhD). Besides, our sincere thanks go to many lecturers at Suranaree University of Technology for their invaluable comments, and last but certainly not least to all the second year English major students at Thepsatri Rajabhat University for their good cooperation during the
process of the data collection.