对输入理论的探讨——输入、互动与二语习得之关系

Reflection on input study — Input, interaction and SLA

在影响二语习得的外部因素中，输入是关键的因素。本文拟简述Rod Ellis、Skehan等人提出的输入、互动理论，对国外输入研究与国内研究的异同、各自的优缺点提出看法，最后探讨开展输入研究对外语教学的启示。

Among the various factors influencing SLA, input is considered a key one in terms of external factors. The paper summarizes the input theory put forward by Rod Ellis, Skehan and others, points out the drawbacks of this theory, and finally finds some of its implications to foreign language teaching and learning in China.