停顿现象经常出现在二语学习者的口语输出中，停顿的频率越高，时长越长，口语表达的流畅性则越低，交流也会受到阻碍。从心理语言学中双语词汇通达的角度讨论二语输出中的停顿现象，分析发现停顿源于在概念表征层面对母语和二语词汇层的同时激活，母语词汇层参与了目标词的选择竞争。为了减少母语在口语输出中的干扰，二语学习者应该充分利用一些学习技巧以增强二语的激活，同时加强对母语的抑制。%The frequency and length of pause have become one of the essential measurements of oral fluency, which influences the process of oral communication. Pause in second language oral production was analyzed based on bilingual lexieal access theo- ry in psychological linguistics. It was found that pause is resulted from the simultaneous activation of lexical presentations in two languages, and that tile first language participates in the selection process. In order to improve oral fluency, second language learners should learn to strengthen the activation of the second language and the inhibition of the first language.
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