Я домою чашки позже, а сейчас открою окно.

I’ll finish washing the cups later, but now I’ll open the window.

Breakdown of Я домою чашки позже, а сейчас открою окно.

• я: I
• открыть: to open
• окно: the window
• сейчас: now

Questions & Answers about Я домою чашки позже, а сейчас открою окно.

What does домою mean here?

Домою means I’ll finish washing or I’ll wash the rest of.

It comes from the verb домыть / домывать, which is built from мыть (to wash) plus the prefix до-. That prefix often adds the idea of finishing something that is not fully done yet.

So Я домою чашки позже suggests something like:

• the cups are not fully dealt with yet, and
• the speaker will finish that job later.

This is slightly more specific than just saying I’ll wash the cups later.

Why is it домою, not помою?

Both are possible in some situations, but they are not identical.

• помою = I’ll wash
• домою = I’ll finish washing / wash up the remaining part

So домою implies completion of an already relevant task. It often sounds like:

• I’ve already started washing things, or
• some cups are still left, or
• the washing-up is an ongoing chore that I’ll complete later.

If the sentence were Я помою чашки позже, it would simply mean I’ll wash the cups later, without the extra sense of finishing the remaining washing.

Why are домою and открою both future tense?