有关儿童习得词汇的研究主要有三种理论假设 :联想学习理论、制约原则论和社会语用理论。本文在分析前两种词汇习得理论缺陷的基础上 ,着重对社会语用认知理论进行了评述。该理论强调 ,具有可塑性的、强有力的社会认知技能是儿童成功习得词汇的关键因素 There are mainly three theoretical hypotheses about the vocabulary of children’s acquisition: the associative learning theory, the principle of restriction theory and the social pragmatic theory. Based on the analysis of the defects of the first two kinds of vocabulary acquisition theories, this article reviews the theory of social pragmatic cognition. The theory emphasizes that plasticity and strong social cognitive skills are the key factors in children’s successful acquisition of vocabulary