На обед я приготовил чечевицу и рис.

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Breakdown of На обед я приготовил чечевицу и рис.

• на: at
• и: and
• приготовить: to prepare

Questions & Answers about На обед я приготовил чечевицу и рис.

Why does чечевица become чечевицу, but рис stays рис?

This is because the direct objects are in the accusative case.

• чечевица is a feminine noun, so in the accusative singular it changes:
  • nominative: чечевица
  • accusative: чечевицу
• рис is a masculine inanimate noun, and masculine inanimate nouns usually have the same form in the accusative as in the nominative:
  • nominative: рис
  • accusative: рис

So after приготовил (prepared/cooked), both nouns are objects, but they behave differently because of their gender and declension pattern.

Why is it приготовил and not готовил?

Приготовил is the perfective past form of приготовить, while готовил is the imperfective past form of готовить.

Here, приготовил is used because the speaker is talking about a completed result: the lunch was prepared.

• Я приготовил чечевицу и рис. = I prepared / cooked lentils and rice.
• Я готовил чечевицу и рис. = I was cooking / used to cook lentils and rice, or it focuses more on the process rather than the completed result.

Russian often uses the perfective when the action is seen as a finished whole.