После ужина я выброшу пустую бутылку.

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Breakdown of После ужина я выброшу пустую бутылку.

• ужин: the dinner
• после: after
• пустой: empty

Questions & Answers about После ужина я выброшу пустую бутылку.

Why is it после ужина and not после ужин?

Because после requires the genitive case.

• ужин = dinner
• genitive singular of ужин = ужина

So:

• после ужина = after dinner

This is something you simply have to learn with the preposition: после + genitive.

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Why is the verb выброшу? How is the future formed here?

Выброшу is the 1st person singular future of the perfective verb выбросить.

Russian has two common ways to talk about the future:

1. Perfective verb → simple future

   • я выброшу = I will throw away / I’ll throw out

2. Imperfective verb → буду + infinitive

   • я буду выбрасывать = I will be throwing away / I will throw away repeatedly or in process

Here, выброшу is used because the speaker means one completed action: after dinner, I will throw the empty bottle away.

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What is the difference between выбросить and бросить?