Mam wybór: czytelnia albo dom.

Because Polish usually does not require the subject pronoun when the verb already shows the person.

• mam = I have
• The ending -m tells you it is 1st person singular

So Mam wybór is the normal, natural way to say I have a choice.

You can say Ja mam wybór, but that adds emphasis, for example:

• Ja mam wybór, a ty nie. = I have a choice, and you don’t.

It is the direct object of mam, so grammatically it is in the accusative.

However, wybór is a masculine inanimate noun, and in the singular, that type of noun often has the same form in nominative and accusative.

So:

• nominative: wybór
• accusative: wybór

That is why the word does not visibly change.

Yes. Wybór means choice or selection, and it is related to the verb wybrać = to choose / to pick.

A useful family of words is:

• wybrać = to choose
• wybierać = to be choosing / to choose repeatedly
• wybór = choice

So Mam wybór literally means I have a choice.

Not exactly.

• czytelnia = reading room, study room, or a place where people sit and read/study
• biblioteka = library

A czytelnia can be part of a library, but it is not the same thing as the whole library.

So if the English meaning shown to the learner is reading room, that is a good match for czytelnia.

Both albo and lub can mean or.

In many everyday sentences, they are very close in meaning. But a learner will often notice this tendency:

• lub can sound a bit more neutral or formal
• albo can sound a bit more conversational, and sometimes a bit more like either...or

In this sentence, albo is perfectly natural:

• czytelnia albo dom = the reading room or home

You could also hear:

• czytelnia lub dom

That would also be understandable and natural.

Because here the speaker is simply listing the two options after a colon.

So czytelnia albo dom works like:

• Option 1: reading room
• Option 2: home

Polish often allows this kind of short, elliptical structure, especially after a colon.

If you wanted to make the relationship more explicit, you could say something fuller, depending on the meaning:

• Mam wybór: iść do czytelni albo do domu.
  = I have a choice: go to the reading room or go home.

• Mam wybór: być w czytelni albo w domu.
  = I have a choice: be in the reading room or at home.

So the short version is natural, but it leaves some of the meaning implied.

The colon introduces the contents of the choice.

It works much like English:

• I have a choice: the reading room or home.

So the first part gives the general idea:

• Mam wybór = I have a choice

And the colon introduces the two options:

• czytelnia albo dom

It is a neat, compact way to present alternatives.

Because Polish does not have articles like English a/an/the.

So:

• czytelnia can mean a reading room or the reading room
• dom can mean a house, the house, or sometimes home

The exact meaning depends on context.

That is very normal in Polish, and learners need to get used to understanding definiteness from the situation rather than from articles.

Here dom appears in its basic dictionary form because it is just being listed as one of the options.

But in a fuller sentence, it might change form depending on the structure:

• do domu = to home / to the house
• w domu = at home / in the house

So dom here is not wrong; it is just a short option label after the colon.

Yes. Polish allows that.

• Mam wybór: czytelnia albo dom.
• Mam wybór: dom albo czytelnia.

Both are grammatical. The difference is mainly focus or what comes first in the speaker’s mind.

The first version may slightly foreground czytelnia; the second may foreground dom.

Yes, and that would be a more explicit way to say it.

• Mam wybór między czytelnią a domem.
  = I have a choice between the reading room and home.

After między in this meaning, Polish uses the instrumental case:

• czytelnia → czytelnią
• dom → domem

So this version is a good alternative if you want a fuller, less elliptical sentence.

A simple learner-friendly guide:

• Mam ≈ mahm
• wybór ≈ VIH-boor or VYH-boor
  (the w sounds like English v, and ó sounds like u)
• czytelnia ≈ chy-TEL-nya
  (stress on TEL)
• albo ≈ AHL-bo
• dom ≈ dome with a short o

A few pronunciation notes:

• Polish stress is usually on the second-to-last syllable
• w is pronounced like English v
• ó is pronounced like u
• cz is a hard ch sound
• ni before a in czytelnia gives a soft nya-type sound

So the whole sentence is roughly:

Mahm VIH-boor: chy-TEL-nya AHL-bo dome.

It is understandable as a full sentence, but it has a slightly compressed, note-like feel because the options are given as bare nouns.

That is very common in Polish. The speaker does not need to spell out every repeated element.

So instead of saying something fully expanded like:

• Mam wybór: mogę iść do czytelni albo mogę iść do domu

Polish can shorten it to:

• Mam wybór: czytelnia albo dom

That makes it brief, natural, and efficient.