Lexicalization of "忽而" and Constructionalization of Related Reduplication Form

忽而(Hu'er) is formed from the adverb 忽(Hu) and the conjunction 而(Er) through the lexicalization with crossing the bound.In addition to syntax,semantics,rhythm,and other factors,the clitization on the 而 plays an important role.The construction of the reduplication 忽而…,忽而… is related with the adjustment and the division of labor of 忽,忽然(Huran),忽而,etc in the vocabulary system.The process of construction brings with the subjectivisation.The research on the change of the lexicalization on 忽而 and the construction of the reduplication form 忽而…,忽而… is helpful to have an in-depth understanding about the similarities and differences between the 忽 words in the modern Chinese.