Questions & Answers about Ona pyta, czy mikrofon działa, bo nas wcale nie słychać.
In this sentence, czy introduces an indirect yes/no question:
- Ona pyta, czy mikrofon działa…
= She is asking whether the microphone is working…
In Polish:
- czy is used for:
- direct yes/no questions: Czy mikrofon działa? (Is the microphone working?)
- indirect yes/no questions: Ona pyta, czy mikrofon działa.
You cannot drop czy here.
You cannot replace it with że or leave just mikrofon działa after pyta, because that would sound ungrammatical or change the meaning.
Yes, you often can.
Polish is a “pro‑drop” language: subject pronouns (ja, ty, on, ona, my, wy, oni, one) are frequently omitted when the subject is clear from context or verb ending.
- Ona pyta, czy mikrofon działa… – neutral, explicit: She is asking…
- Pyta, czy mikrofon działa… – also natural, a bit more compact; She (or he) is asking, understood from context.
You’d keep ona if:
- you want to emphasize she (not someone else)
- it’s the first mention and you want to introduce the subject clearly.