摘要：In this paper, we describe the design and implementation of a synchronous EFL computer assisted English writing environment. In addition to supporting the basic writing function requirements, two novel mechanisms, namely, (1) synchronous text co-editing, and (2) voice delivery, have been designed to provide fundamental capabilities over the Internet. As a result, the designed system exploits the integration of computers and networking capabilities with linguistic and pedagogical principles crucial to web-based language learning. The system integrates CMC tools with database technology for the specific purpose of archiving the communications between tutors and students. Since the platform offers a bank of comments that are frequently used in these online tutorials, the system can store and tabulate each token instance when a comment is used. This database then offers instant cumulative profiles into tutor-learner interaction and into the common language errors or difficulties uncovered in the tutorials. Such an archive supports research into language learning difficulties and into patterns of tutor-learner interaction. This data is valuable in the assessment of pedagogical effectiveness and in the development of online tutorial materials that meet the attested needs of learners.
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