The new technologies of recent decades have brought about changes in how computers are used to assist language teaching. E-mail, computer conferencing, and now the World-Wide Web (WWW), have been increasingly used to enhance language teaching and to facilitate teacher development. With three examples drawn from e-mail and computer conferencing projects in Europe, America and Asia that involve English teachers and college students, this paper attempts to explore why and how computer-enhanced ESL/EFL projects have been extended to the WWW. Moving to the WWW has expanded the scope of the potential audience and made possible the inclusion of multimedia and hyperlinked materials in these projects. It is important to control the right of access and to monitor the quality of students' work, without losing sight of the language focus or sacrificing the human touch in language classes. 近年來，科技日新月異，如何使用電腦輔助語言教學，也引起了廣泛的討論。在加強語言教學及促進老師培訓方面，電子郵件、電腦會議及現今流行的萬維網的應用，日益增加。本文嘗試利用三個來自歐、亞、美洲的電子郵件及電腦會議計劃的例子，探討為何及如何將電腦輔助的英語教學計劃，延申至萬維網上。使用萬維網教學的好處是增加使用者，同時也可引用多媒體及超連結的教材，但在控制上網權及監察學生作品質素，以至語文學習重點，及師生接觸的機會等方面，都是值得注意的問題。此外，簡化電腦會議系統的操作，讓老師們更有信心地使用這工具也非常重要。

To investigate the value of electronic conferences for English learners, I will first review some major studies related to the use of computers in language classrooms, then present a qualitative analysis of an e-mail corpus collected from a large-scale international writing project that involved 20 ESL discussion groups at the college level. The study attempts to investigate the democratic influence of computer-mediated communication (CMC), and examine the subsequent benefits for language learners. It was found that electronic conferencing encourages a movement from teacher-centred to learner-centred pedagogy, resulting in students constructing their knowledge together, heightening their language awareness, developing spontaneity in communicating in English and sharpening the precision of their word choice.