本文結合文獻資料和方言語料，論「別」的清濁別義、四聲別義以及語法化現象。內容包括（一）根據「別」、「」的音義關係，論證「」乃是由「別」透過四聲別義滋生的同族詞。（二）說明「別」的清濁別義主要在區分他動和自動之異，「別清」、「別濁」各自循其引申之途，產生了多種用法，最後並各自虛化為不同的副詞。（三）探討「識知」義動詞「別清」的語法化歷程。這個「別清」原本後接名詞性賓語，後來也擴大可接動詞性賓語。賓語的擴大，使「別清」與後面的動詞並排出現。這樣的句法結構使語義焦點後移，終使「別清」退居為次要的修飾語而虛化為副詞。
本文並通過音韻層次的探討，論證「另卑」與閩南語表示「分開」的pɤ2/pue2/pe2具有同源關係。此外也指出閩南語表示「分辨」的pat4以及表示「另外」的pat8反映了「別」的清濁兩讀，來自魏晉時期。最後並根據閩南語料，論證「識知」義動詞「別清」如何虛化為副詞。

The present article studies the morphological derivation and grammaticalization of the word bie 別. It reveals that bie 別attained bi as its derived form through the process of tonal change. It moreover shows that, through voicing/devoicing alternation, bie 別derived the transitive and intransitive forms bie-*p 別清and bie-*b 別濁, which became adverbs by following processes of grammaticalization. Thus, the voiceless bie 別清, which originally bore the meaning of “to know” was grammaticalized as an adverb through a serial process of construction expansion and focus shifting. This article clarifies, furthermore, the cognate relationship of bi and its Southern Min counterparts pɤ2/pue2/pe2. The chronological stratification of Southern Min pat4 and pat8 is discussed as well.