Questions & Answers about Я допью чай и пойду спать.
Because допью is from a perfective verb: допить.
In Russian, perfective verbs do not have a true present tense. What looks like a present-tense form is actually used for the simple future:
- я допью = I will finish drinking
- not I am finishing drinking
So in this sentence:
- Я допью чай = I’ll finish my tea
This is one of the most important patterns in Russian:
- imperfective present = present meaning
- perfective “present” forms = future meaning
The prefix до- adds the idea of finishing something that is already in progress or doing something to the end.
So:
- пить = to drink
- выпить = to drink up / drink (a whole amount)
- допить = to finish drinking what was left
That means Я допью чай often suggests:
- the tea is already there,
- the speaker has already started it or intends to finish the remaining amount.
So допью is not just I will drink tea, but more specifically I’ll finish my tea.