In the free-stress languages – all of East and South Slavic except for Macedonian –
the patterns are often not predictable. In both types the most common opposition
is between stem- and inflexion-stress, with three basic patterns of ‘‘fixed-stem’’,
‘‘fixed-inflexional (fixed-end)’’ and ‘‘mobile’’, the last having potentially a large
number of ‘‘patterns’’, but in practice restricted to ‘singular plural’ in nouns and
‘1Sg rest’ in the non-past tense of verbs. These patterns are discussed and
exemplified in 5.5.
4.2.5 Vowel quality alternations
Vowel quality alternations take several forms, some of which may occur
simultaneously:
a. alternations of quality per se (ablaut)
b. alternations of stress: unstressed vowels may have different quality,
particularly in Russian, Belarusian and Bulgarian (3.3.2.6, 3.5.1)
c. combined alternations of quality and length
There are relatively few combinations of sounds in alternations of this last type.
Their morphological environments are approximately the same as those in vowel
zero alternations, though alternations of vowel quality combine with other types of
alternation in various forms of the verb, especially in aspect formation.
Palatalizations often occur with such alternations of vowel quality:
(15)
Vowel quality alternations
o e Blg duxo
´
ven ‘spiritual’ dus
ˇ
e
´
ven ‘emotional’
Ukr vozy
´
ty ‘to convey’ [Indet] ve
´
zty ‘to convey’
[Det]
Sorb zˇ ona ‘wife’ zˇ enic
´
‘to marry’
(of a man)
Pol anioł ‘angel’ aniele ‘angels’
Cz nosit ‘to carry’ [Indet] ne
´
st [Det]
a e Blg b jal ‘white’ be
´
li [Pl]
Rus sadı
´
t
0
sja ‘to sit down’ [Imprfv] sest
0
[Prfv]
Pol biały ‘white’ bieli [MascAnim
NomPl]
kwiat ‘flower’ kwiecie [LocSg]
Sorb pijach ‘I drank’ [Imperf] pijes
ˇ
e [2–3 Sg]
rjad ‘row’ rjedz
´e
[LocSg]
e i Rus bre
´
ju ‘I shave’ brit
0
‘to shave’
Ukr letı
´
ty ‘to fly’ [Det] lita
´
ty ‘to fly’ [Indet]
4.2 Vowel alternations 199