本文以優選論(Optimality Theory)來分析國語零聲母的音質呈現方式,結果顯示優選理論非常成功地解釋了零聲母的行爲。分析的過程中應用了環境染色(contextual coloring)與輸出對應理論(Output-to-Output Correspondence Theory),也制定出相關的制約及層級排序,並得出下列重點:(a)零聲母在表層會有音質是因爲高層級的Onset制約所造成的;(b)非高元音的零聲母會趨向於無標音,至於確切的音質選擇則屬於自由變體;(c)高元音的零聲母受到環境結構制約(contextual markedness constraint)的影響,故以相對應的滑音出現;(d)零聲母的一般音節與輕音節裡呈現不同的行爲,是因爲高層級的輸出對應制約(output-to-output correspondence constraint)的影響。另外,我們也得出控制零聲母音質的制約排序基模(constraint ranking schema):輸出對應制約»環境結構制約»自由環構制約(OO-Identity»contextual markedness»context-free markedness)。
This paper examines the realization and behavior of the zero onset in Mandarin in Optimality Theory (OT; Paul & Smolensky 1993) and the results show that OT successfully account for the rather complicated behavior of the zero onset. Important findings include: (a) The realization of the zero onset in surface is due to the high-ranked constraint Onset; (b) the zero onset of non-high vowels tend to surface as unmarked segments, the choice of which is a matter of free variation; (c) the zero onset of high vowels, under the influence of contextual markedness constraints, surfaces as corresponding glides; and (d) the asymmetrical behavior of the zero onset in stressed syllable and in unstressed syllable results from high-ranked output-to-output correspondence constraints. Moreover, we conclude from the analyses that the realization of the zero onset in Mandarin involves this constraint ranking schema: OO-Identity » contextual markedness » context-free markedness.