Russian Language Stack Exchange is a question and answer site for students, teachers, and linguists wanting to discuss the finer points of the Russian language. It only takes a minute to sign up.
Sign up to join this community
If we disregard those nouns whose genitive plural ending is zero, -ей, or -ий, are the rules for which vowel letter to use in the genitive plural ending -ов/-ёв/-ев the same as the rules for which vowel letter to use in the instrumental singular ending -ом/-ём/-ем (as described in https://russian.stackexchange.com/questions/12018/masculine-singular-instrumental-ом-ем-ём)?
Are the rules for which vowel letter to use in the а-declension instrumental singular ending ой/-ёй/-ей the same?
The endings for feminine nouns in the instrumental case (with the exeption of those ending in -ь) are: -ой after hard consonants and -ей after soft consonants or vowels: Культура — культурой Пенсия — пенсией Няня — няней, дядя — дядей When you have (ь), just add -ю:
(радость) → с радостью But:
(учи́тельница) — работает учи́тельницей. (хрипотца́) → голос с хрипотцо́й. Птица — птицей Ленцá — с ленцóй
Yes, the rules for vowel distribution are exactly the same in those endings, as well as other endings e.g. neuter nominative -о/-е/-ё (ведро, поле, копьё), adjectival -ого/-его/-ёго, -ому/-ему/-ёму and suffixes:
