藏文-s韵尾在藏语邬郁话中的演变

The Changing of Written Tibetan Final-s in Uyug Tibetan

藏文带-s韵尾的韵母在藏语邬郁话中的读音可分为早期层次和晚期层次,晚期层次是受书面语或拉萨话的影响产生的。在邬郁话的早期层次中,-s韵尾虽然已经脱落,但藏文带-s韵尾和不带-s韵尾的语音对立在邬郁话中以另两种语音对立形式反映出来,即元音的长短对立和声调对立。-s韵尾脱落后邬郁话产生了一对新的声调:51调和231调。新声调的产生导致邬郁话部分动词过去时的形态手段转换为声调屈折变化的手段。

The pronunciation of Written Tibetan words with final-s in Uyug Tibetan can be divided into the early stratum and the late stratum.The late stratum is influenced by Written Tibetan or Lhasa Tibetan.In the early strata of Uyug Tibetan,although the final-s has been deleted,the contrast between the syllable originated from Written Tibetan with final-s and the one originated from written Tibetan without final-s is preserved,reflected in two other forms of contrast in Uyug Tibetan,i.e.the contrast of vowel length and the contrast of tone.After the final-s has been deleted,Uyug Tibetan developed two new tones:51 and 231.As a result,the morphology of the past tense of verbs in Uyug Tibetan changed to tonal inflection.