Lecture 2 phonological theories I. A. Baudouin de Courtenay’s Theory of Phonology

воды /vodi/, водный /vodnij/, водяной /və djanoj/ in the morpheme вод we can distinguish the sound alternations /ʌ'-о-ə/. In such cases R.I. Avanesov proposes to define each member of alternations /ʌ'-о-ə/ as variants of one phoneme /o/. Likewise in the words вода / vʌdʌ'/, вод /voˊt/, воде /vʌde/ the consonants /t/ and /d/ may also be interpreted as variants of the phoneme /d/, but the members of alternations /d-t-d'/ may be considered as the realizations of one phoneme. In all these cases the relationship between the notions of phoneme and morpheme becomes very important. In such alternations, which depend on their position in morphemes or words, and there are no distinctive functions between the members of alternations, it is possible to use the term