Hi! I'll try to answer your question. Sorry for my english:) The words "капуста", "морковь", "лук", "картофель", "тыква" (vegetables) have no plural form in russian language. It's like milk. You say "two glasses of milk" (два стакана молока) if you want to say about how much exactly you drink. At the same way in russian you say "два килограмма капусты" (two kilograms of cabbage) or "два кочана капусты" (two head of cabbage) if you want to say how much exactly you need. Pay attention on ending of the word "капустА". When we say "два килограмма капустЫ" we change the ending because we use the word "капуста" in genitive case. В этом магазине продаётся капустА. - this store sells cabbage. The word "капустА" is used in nominative case. В этом магазине нет капустЫ. - There is no cabbage in this store. The word "капустЫ" is used in genitive case. Я обычно покупаю 1 кочан капустЫ. - I usually buy 1 kilo of cabbage. The word "капустЫ" is used in genitive case too. As for fruits, it has plural form. яблоко - яблоки банан - бананы персик - персики На столе лежат бананы - There are bananas on the table. Or Вынь бананы из ушей :) it's the idiom. It means "you don't listen to me". You can say it when you have already told about something several times but somebody keeps asking you as if he or she didn't hear your story at all. Berries have no plural form. Малина Клубника Черника Морошка Костяника Земляника Ежевика и так далее Виноград сюда же So, you should know that some words have no plural form but these words can change their endings according to cases (a nominative, an accusative, a genitive, a dative, an instrumental and a prepositional case).