儿童语言习得和认知发展密切相关。语义习得与概念发展同时进行。儿童的语义发展经历了从简单到复杂、从粗糙到精细的过程。儿童认知发展则表现为概念范畴化，从发现和表达事物的显在特征到更为细致复杂的综合特征和关系特征。儿童的语言水平反映了认知水平。 Children’s language acquisition and cognitive development are closely related. Semantic acquisition and conceptual development go hand in hand. Children’s semantic development has gone from simple to complex, from rough to fine process. Children’s cognitive development is manifested as concept categorization, from the obvious features of discovering and expressing things to more complex and complex features and relations. Children’s language level reflects the cognitive level.