本文首先以閩語“去”字為例，說明“死去”、“暗去”的“去”表示狀態的改變，與特定的述語搭配，其間可以有中插成分，應該視為“動相補語”，未虛化到“完成體標記”的階段。再從早期白話找其同源用法，並與表動作完成的“卻”、“了”、“得”等詞比較，說明這些詞都是“動相補語”，一個平面句法系統不會包含多個體貌標記。當詞彙互相競爭，直到汰選剩下單個“了”表示“完成貌”，體貌範疇才算於焉形成。

In this paper, we first take the example of the word “ki³” (去) in the Min dialect and explain how that word in phrases such as “si² ki³” (死去) and “am³ ki³” (暗去), where used in conjunction with a particular predicate and open to the insertion of an infix, should be viewed as a phase complement (Aktionsarten) rather than a perfective aspect. Next, we search for an orign for this phenomenon in early examples of the vernacular and make a comparison with other words indicating the completion of an action, namely “ch'uè” (卻), “liăo” (了) and “tè” (得), to show that these too are phase complements and that from a synchronic perspective, a grammatical system will not contain multiple aspect markers. On this view, there was a stage in which various vocabularic elements competed for the role of indicating the perfective, a stage that came to an end with the single element “liăo” winning out and aspect category reaching fruition.