Krech (1962) explained
the major functions of language from the following three aspects:1) Language is the primary vehicle of
communication; 2) Language reflects both the personality of the individual and the culture of his history.In turn,
it helps shape both personality and culture; 3) Language makes possible the growth and transmission of culture,
the continuity of societies,and the effective functioning and control of social group.
References:
1.Hudson,R.A..Sociolinguistics[M].Cambridge:CUP.1980.
2.Yule,George.The Study of Language[M].Cambridge:Cambridge University Press.1985.
3.Saussure,F.de.Course in General Linguistics[M].London:McGraw-Hill Book Company.1966.
你把这个下下来就知道了
www.***.org.cn/doc/uc200507/uc20050706.pdf