Questions & Answers about На завтрак я пью яблочный сок.
In Russian, на + accusative is often used to mean for in the sense of food, meals, or purpose.
So:
- на завтрак = for breakfast
- на обед = for lunch
- на ужин = for dinner
Literally, it may feel like onto breakfast or for breakfast, but the natural English translation is simply for breakfast or at breakfast depending on context.
In this sentence, На завтрак я пью яблочный сок means that apple juice is what the speaker drinks as their breakfast drink.
Because на here takes the accusative case, and завтрак is a masculine inanimate noun.
For many masculine inanimate nouns, the accusative singular looks exactly the same as the nominative singular:
- nominative: завтрак
- accusative: завтрак
So the form does change grammatically, but it just happens to look identical.