本篇研究主要探討觀看YouTube對台灣主修英文的大學生有何影響。研究對象是一所國立科技大學應用外語系一百位同學，他們自由填寫了一份問卷以調查同學在日常生活中，使用YouTube的經驗及看法。研究結果顯示：這些主修英文的學生，超過三分之二的同學(71%)經常用YouTube聽英文歌曲(M=4.06)。同學也會運用YouTube來增進英文聽解能力(77%, M=3.97)與口語技巧(62%, M=3.65)。多數的參與者同意在讀書時會使用YouTube上的資源幫助他們心情放鬆(82%, M=4.23)，豐富語言與文化方面的知識(68%, M=3.75), 乃至運用YouTube查尋有用的資訊以準備英文口頭報告(65%, M=3.79)。然而，有相當多的同學對於YouTube上頻繁廣告感到討厭(74%, M=4.08)。本研究之調查結果有助於教授英文的老師以及其他教育工作者深入了解大學生生活中使用YouTube，以及用YouTube學語言帶來的影響。其實YouTube不只是一個娛樂性的媒體，同時也是提供第二語言學習資源豐富的平台。

This case study aims to explore the influences of watching YouTube on Taiwanese English-major college students. A total of exact one hundred college students from a particular department of Applied Foreign Languages were recruited to fill out a questionnaire designed to investigate their perspectives of using YouTube in their daily life. It was found that more than two thirds of these college students (71%) often listened to English songs on YouTube (M=4.06). The students also took advantage of YouTube to improve their listening comprehension (77%, M=3.97), and speaking skills (62%, M=3.65) in English. Many participants had utilized the resources on YouTube to feel relaxed while studying (82%, M=4.23), to enrich their knowledge about language and culture (68%, M=3.75), and prepare for their oral presentations (65%, M=3.79). Nevertheless, a good number of students indicated that the advertisements on YouTube were quite annoying (74%, M=4.08). The findings of this research can help English teachers as well as other educators to understand the influences of watching YouTube on college students in their daily life and language learning. YouTube is not just an entertainment medium but also a very resourceful website for second language learning.