Daj znać, czy możesz wpaść i wyskoczyć na kawę.

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Breakdown of Daj znać, czy możesz wpaść i wyskoczyć na kawę.

• móc: can
• czy: whether
• dać znać: to let someone know

Questions & Answers about Daj znać, czy możesz wpaść i wyskoczyć na kawę.

What does daj znać mean, and is it a fixed expression?

Yes — daj znać is a very common expression meaning let me know.

Literally, it comes from dać (to give) + znać (historically connected with knowing/noticing), but in modern everyday Polish you should learn dać znać as a whole phrase.

Examples:

• Daj znać, kiedy będziesz. = Let me know when you’ll be here.
• Daj znać, czy masz czas. = Let me know if/whether you have time.

It sounds natural and conversational.

What form is daj?

Daj is the imperative form of dać for one person in the informal ty form.

So:

• daj znać = let me know (to one person, informal)
• dajcie znać = let me know (to more than one person, informal plural)

Because the sentence uses daj and możesz, it is clearly addressed to one person you speak to informally.

Is this sentence informal? How would I say it more politely?