交互假说(Interaction Hypothesis)认为,与本族语者交流互动可以促进二语习得,因为交互过程将语言输入、学习者的内在能力、语言输出连接了起来。重铸作为一种特殊的交互反馈形式,一直受到二语习得研究者的广泛关注。但对于重铸在多大程度上可以促进二语习得这一问题还存在颇多争议,文章将从四个方面入手分析争议产生的原因。 Interaction Hypothesis argues that interaction with native speakers facilitates second language acquisition because the interaction connects language input, learners’ intrinsic abilities, and language output. Recasting, as a special form of interactive feedback, has received widespread attention from second language acquisition researchers. However, there is still a lot of controversy over the extent to which re-casting can promote second language acquisition. The article will analyze the causes of disputes from four aspects.