Wang (2005) proposes that the modern usage of the construction hen4-bu4-de2 (恨不得) 'to itch to' undergoes such a reanalysis whereby a syntactic structure has become a lexicalized item.
the source construction and the innovative one are shown below: hen4-bu4-de2 (恨不得) 'to itch to' experiences the process of lexicalization which is a linguistic change that "results in the production of new lexical/contentful items" (Brinton and traugott 2005:96).