Charles N. Staubach

More Notes on Subjunctive Tenses

so . . . (In late O.S. . . . the mod. form soy begins to appear. The yis difficult of explanation. Some refer it to an intermediate soe, i.e. soe, found in Leonese, whose e is likewise not easily explained; . . . Possibly the form arose in the cases of inversion, i.e. when the order was so yo > soyo and with backward and forward action of the palatal > soy yo. But? The y appears in mod. Sp. also in voy and doy. Cf. ser.) (Op. cit., voc., p. 290) The Latin verbs do, su(m), sto were quite special in being monosyllables, and therefore in their V.L. forms were stressed on the vowel of the declension rather than on a preceding stem as was the case in the polysyllabic verbs. In a medieval Spanish combination do yo, so yo, esto yo (joined also by vo < vao < vado), the stress would tend to concentrate upon the verb form, whether the yod of yo created another twin yod as a glide vowel or not.