I am currently learning the Russian language via Rosetta Stone, and am currently very confused as I cannot tell the difference between девочек and девочки. I have no idea what the first form means (I know both mean girl), and I previously thought that the second form meant girls. Can anyone tell me what the specific differences are between девочка, девочек, and девочки (and possibly any other forms that I could come across in the future).
There are six grammatical cases in Russian. Simply put:
Case Singular Plural
Nominative девочка девочки
Genitive девочки девочек
Dative девочке девочкам
Accusative девочку девочек
Instrumental девочкой девочками
Prepositional [о] девочке [о] девочках
Yes, the words for singular genitive and plural nominative coincide and have the same pronunciation (not always, but for the word
девочка this is the case) so usually the context should determine which form is used.