On the Lexicalization,Grammaticalization and Cognitive Explanation of "Yigai"(一概)

Yigai(一概) is at first a loosen phrase,with the container and inner contents not highlight or distinction;When used in conjunction with its high-frequency,lexicalization happened to the evolution of adjective,which is highlighted by the contents of the same or similar.The lexicalization and grammaticalization on Yigai(一概) are all occurred in the Tang(唐) Dynasty,it's lexicalization is only to provide a transition for the grammaticalization,therefore,this usage has not retained in the modern Chinese;When it further occurs the grammaticalization into adverb,the container is highlighted the full,without exception. In the process of lexicalization and grammaticalization on Yigai(一概),the syntax,semantics and cognition three all are playing the role.