To dobra okazja, żeby odwiedzić rodzinę.

At the beginning of a sentence, to often works like this/that/it is in English.

So:

To dobra okazja = This/That is a good opportunity or It’s a good opportunity

It does not mean the same thing here as the English word to. It is a very common Polish way to identify or define something.

Because okazja is a feminine noun, and adjectives in Polish have to agree with the noun in gender, number, and case.

• dobry = masculine
• dobra = feminine
• dobre = neuter

Since okazja is feminine, you need dobra:

• dobra okazja = a good opportunity

It is in the nominative case.

That is because To dobra okazja is an identifying statement: This/That is a good opportunity. In this kind of sentence, Polish commonly uses the nominative.

So both words stay in nominative:

• dobra
• okazja

Żeby introduces a clause meaning something like:

• to
• in order to
• so that

In this sentence:

To dobra okazja, żeby odwiedzić rodzinę.

it connects the idea of a good opportunity with the action to visit family.

So it means:

• a good opportunity to visit family
• more literally: a good opportunity, in order to visit family

In everyday Polish, żeby is very common and natural.

Because in Polish, clauses introduced by words like że, żeby, gdy, kiedy, bo, etc. are usually separated with a comma.

So:

To dobra okazja, żeby odwiedzić rodzinę.

That comma is standard Polish punctuation.

Odwiedzić is the perfective form, which focuses on completing the action: to visit as a single whole event.

• odwiedzić = to visit once / to go and visit
• odwiedzać = to visit regularly / repeatedly / habitually

Here the sentence is about one possible visit, not a repeated habit, so odwiedzić is the natural choice.

Compare:

• To dobra okazja, żeby odwiedzić rodzinę. = a good opportunity to visit the family
• Lubię odwiedzać rodzinę w weekendy. = I like visiting family on weekends

Because odwiedzić takes a direct object, and direct objects are usually in the accusative case in Polish.

The base form is:

• rodzina = family

But after odwiedzić:

• odwiedzić rodzinę = to visit family

So:

• nominative: rodzina
• accusative: rodzinę

This is a very common feminine noun pattern:

• kobieta → kobietę
• siostra → siostrę
• rodzina → rodzinę

It can mean family in a general sense, and in context it often implies one’s family.

Polish often leaves out possessive words like my when they are obvious.

So:

odwiedzić rodzinę can mean:

• visit family
• visit the family
• visit my/your/his/her family

If you want to be more explicit, you can say:

• odwiedzić moją rodzinę = visit my family
• odwiedzić swoją rodzinę = visit one’s own family

In your sentence, the shorter version sounds natural.

Yes, but the tone changes a little.

• żeby = very common, neutral, everyday
• aby = more formal or written
• by = shorter, often used in some structures, but not always interchangeable in exactly the same way

So you could say:

To dobra okazja, aby odwiedzić rodzinę.

That is correct and natural, but slightly more formal than żeby.

For everyday speech, żeby is usually the safest choice.

Not completely. Polish word order is fairly flexible, although some versions sound more natural than others.

The original sentence:

To dobra okazja, żeby odwiedzić rodzinę.

is a very natural neutral order.

You might also hear:

• Żeby odwiedzić rodzinę, to dobra okazja. — grammatical, but less natural in most contexts
• To świetna okazja, żeby odwiedzić rodzinę. — same structure, different adjective
• To dobra okazja do odwiedzenia rodziny. — a different construction, also correct

So the original version is probably the best one to learn first.

It is pronounced roughly like ZHE-bih.

A few details:

• ż sounds like the s in measure
• e is like e in met
• by here sounds roughly like bih

The stress is on the first syllable:

ŻE-by

Polish stress is usually on the second-to-last syllable, and since żeby has two syllables, that means the first one is stressed.

Yes. Okazja can mean:

• opportunity
• chance
• sometimes even bargain/deal in shopping contexts

For example:

• To dobra okazja, żeby odpocząć. = It’s a good opportunity to rest.
• Kupiłem to po okazyjnej cenie. = I bought it at a bargain price.

In your sentence, okazja clearly means opportunity/chance.

Yes. A very common alternative is:

To dobra okazja do odwiedzenia rodziny.

This uses:

• do
  • a verbal noun
• odwiedzenia = visiting / the act of visiting
• rodziny = genitive form after do

So the two common patterns are:

• To dobra okazja, żeby odwiedzić rodzinę.
• To dobra okazja do odwiedzenia rodziny.

The version with żeby + infinitive often feels a bit more direct and conversational for learners.