This paper reviews how the construct of oral fluency in a second language (L2) has been defined and researched over the last twenty-five years. The emerging picture is somewhat kaleidoscopic, as domains of cognitive, social, individual and linguistic influences on L2 speech have been opened up for study. L2 fluency research presents a wealth of directions for future exploration, five of which have been laid out here as an achievable, though not comprehensive, agenda for the coming decade. Four of these studies focus on the relationship between variables such as perceived fluency, utterance fluency, idiomaticity, task familiarity, vocabulary size and learner self-reflection, while the fifth focusses on supporting fluency development in the L2 classroom. As an aid to prospective researchers, the five studies are laid out in practical detail, together with suggestions on how these might need to be altered to fit the local context in which the research is undertaken.

中文翻译：

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第二语言的口语流利度：未来十年的研究议程

本文回顾了过去 25 年来如何定义和研究第二语言 (L2) 的口语流利度。新出现的画面有点万花筒，因为认知、社会、个人和语言对 L2 语音的影响领域已经开放供研究。L2 流利度研究为未来的探索提供了丰富的方向，其中五个已在此处列出，作为未来十年可实现但不全面的议程。其中四项研究侧重于变量之间的关系，例如感知流畅度、话语流畅度、惯用语、任务熟悉度、词汇量和学习者自我反思，而第五项则侧重于支持二语课堂的流畅度发展。作为对潜在研究人员的帮助，这五项研究都以实用的细节进行了阐述，