论文以儿童早期(两岁半以前)语言发展作为研究对象,在细致描写该时期儿童所处的语言环境及其理解与表达状况的基础上,将儿童的理解与表达、儿童的语言输出与所接受的输入加以对照,得出儿童语言习得与环境数据的输入呈正相关的重要结论,并深入探讨了后天语言环境对儿童习得语言 The essay takes the language development of early childhood (two and a half years old) as the research object. On the basis of describing the language environment and understanding and expression of the children in this period, this paper analyzes the children’s understanding and expression, the language output of children Accepted input to draw an important conclusion that children’s language acquisition is positively correlated with the input of environmental data and explores the effect of acquired language environment on children’s acquisition of language