On the prominence of wei(未)in modern Chinese from the perspective of registers
It is generally believed that the most common negative adverbs in modem Chinese are bu(不)and mei(没)/meiyou(没有).The negative marker wei(未)has a low frequency of use and most of its functions in Classical Chinese have been taken over by mei/meiyou.However,wei is still prominent in legal registers and audit reports with a higher frequency of use than that of mei/meiyou.This is motivated by register and the linguistic properties of wei.