語用教學研究大多專注在教學成效，並以量化研究比較跨文化語用文化規範和溝通策略之差異，然，只有少數的質化研究探討語用研究理論如何落實在外語教學師生的學習動機。準確來說，本研究檢視以英語為外語師生如何看待語用能力培養，以及學習社會語言之動機相關經驗。先前文獻已經指出，第二語言語用學習動機研究，需要投入更多的努力。 因此，本質化個案研究旨在探討臺灣以英語為外語師生學習語用動機。資料蒐集透過面訪、課室觀察和課堂筆記以及研究者的省思日誌，從學習動機的角度審視外語語用教學，洞悉多層次語言學習動機。 研究結果顯示，受訪師生均認為語用教學對第二語言發展極為重要，縱使社會政治情境因素的干擾，諸如考試領導教學、授課時數嚴重不足和偏重語法教學，然而，在學習語言禮貌和適切性方面，受訪者均偏好語言實用功能和實際生活應用，甚於傳統單一語法教學。受訪老師指出在語言四項技能統整課程，語用教學比例明顯偏低，認為語用教學在臺灣並不普及。另外，臺灣英語為外語老師普遍未能滿足學生語用學習需求。 雖然師生起初對學習外語語用似乎未注意其重要性，然而，在回顧外語學習的歷程中，受訪者提高對於文化適切表達之醒覺。本研究期許幫助臺灣學習英語為外語師生了解語用教學在溝通功能中扮演的重要角色，促進未來語用教學研究之實踐，發展語言使用者之溝通能力。 / Though much of L2 pragmatics research has focused on the effectiveness of instructional pragmatics and cross-cultural variations of pragmatic norms and strategies used in the target language via cross-sectional quantitative research, little, however, has been conducted to explore teachers’ and students’ motivational experiences of implementing pragmatics instruction in real-life teaching and learning practices in EFL contexts. Specifically, little was known about what and how teachers and students perceive the role of developing pragmatic ability and their motivations to teach and learn socio-pragmatic functions since prior research has suggested that more research efforts should be done in the line of L2 pragmatics research. Therefore, this study aims to investigate both teachers’ and students’ motivations of learning and teaching pragmatics through qualitative research. Multiple data sources were collected through face-to-face interviews, classroom observations and field notes as well as the researcher’s reflective journals, to illuminate the dynamic, multifaceted motivational experiences of L2 instructional pragmatics. The findings suggest that both teachers and students considered the role of teaching and learning pragmatics essential to second language development pertaining to the polite and appropriate use of the target language, and its learning utility, practical functions and intrinsic interest in using language for authentic communication purposes despite the sociopolitical factors, such as exam-oriented teaching, lack of top-down institutional support and the implementation of English language policy in Taiwan. Nevertheless, the teacher voiced her inadequacy of teaching L2 pragmatics in a four-skill integrated course and demonstrated her concerns about the prevalence of teaching students how to speak English in a culturally appropriate way, which is, however, contrary to students’ eager expectations to learn L2 pragmatics. Albeit both the teacher and the students tended to ignore L2 pragmatics at first, after the initial reflections they raised their awareness of culturally speaking in an appropriate way. In this study, it was hoped to empower both teachers and students to understand their teaching and learning practices by sensitizing them to L2 pragmatics in EFL contexts, to facilitate the implementation of L2 pragmatics instruction in the classroom and to underscore the importance of developing learners’ communicative competence in Taiwan.