研究的目的语言的应用,是儿童语言发展的一个重要方面。语言的应用主要包含两个方面的意义:第一,是语言的功能,指人们用语言来获得信息和学习事物以及运用语言来满足需要,调节别人的行为,即具有认识功能与交际功能。第二,语言的选择与交替,即说话者根据不同的情境和听者的实际能力来挑选一个合适的表达方式。语言跟使用者及其语言环境之间有密切的关系,同样一个词或一句话用在不可的时间和地点意思不一样;说话者在不同的情 The purpose of the study The application of language is an important aspect of children’s language development. The application of language mainly contains two aspects: First, it is the function of language, which refers to people’s use of language to acquire information and learning things and to use language to satisfy their needs and to regulate other people’s behavior, that is, to have cognitive and communicative functions. Second, the choice of language and alternation, that is, the speaker according to different situations and the actual ability of the listener to pick a suitable expression. There is a close relationship between the language and the user and his / her language environment. The same word or sentence is used in different times and places. The speaker has different feelings