Nasza drużyna gra świetnie.

Because drużyna is a feminine singular noun, and nasza has to agree with it in gender, number, and case.

• nasz = masculine singular
• nasza = feminine singular
• nasze = neuter singular or some plural contexts

Since drużyna is feminine, our team becomes nasza drużyna.

It is in the nominative singular because it is the subject of the sentence — the thing doing the action.

So:

• nasza drużyna = the subject
• gra = the verb
• świetnie = describes how the action is done

Because drużyna is nominative singular, nasza is also nominative singular feminine.

Gra is the 3rd person singular present tense form of the verb grać, meaning to play.

It agrees with drużyna, which is singular:

• ja gram = I play
• ty grasz = you play
• on/ona gra = he/she plays
• nasza drużyna gra = our team plays / is playing

It can mean either one, depending on context.

Polish present tense often covers both:

• habitual meaning: Our team plays very well
• right now: Our team is playing very well

Polish does not usually make the same strict distinction that English makes between plays and is playing.

Because Polish does not form the present continuous the way English does.

In English, you need:

• is playing

In Polish, the present-tense verb alone is enough:

• gra

So gra can already mean plays or is playing, depending on context.

Because świetnie is an adverb, and it describes the verb gra — in other words, it tells us how the team plays.

• świetnie = excellently / very well
• świetna = excellent / great (adjective, feminine singular)

So:

• Nasza drużyna gra świetnie. = Our team plays excellently.
• Nasza drużyna jest świetna. = Our team is great.

The first describes the performance. The second describes the team itself.

It comes from the adjective świetny meaning great, excellent.

A very common pattern in Polish is:

• adjective → adverb

For example:

• dobry → dobrze
• szybki → szybko
• świetny → świetnie

So świetnie is the adverb form meaning excellently or very well.

Yes, usually.

• dobrze = well
• świetnie = excellently / brilliantly / really well

So świetnie sounds more enthusiastic and stronger than dobrze.

No, Polish word order is fairly flexible because grammatical relationships are shown by endings more than by position.

This sentence has a very natural, neutral order:

• Nasza drużyna gra świetnie.

But you could also say:

• Nasza drużyna świetnie gra.
• Świetnie gra nasza drużyna.

These alternatives change the focus or emphasis, not the basic meaning.

Because drużyna is a singular noun meaning team as one unit.

So Polish treats it grammatically as singular:

• drużyna gra = the team plays

Even though a team contains many players, the noun itself is singular, so the verb is singular too.

Yes, you can, but the meaning shifts slightly.

• Nasza drużyna gra świetnie. = Our team is playing very well / plays very well.
• Nasza drużyna jest świetna. = Our team is great.

The first sentence is about how the team performs. The second is a more general judgment about the team itself.

A rough English-friendly guide is:

• drużyna ≈ droo-ZHI-na
• świetnie ≈ SHFYET-nye

A few important sounds:

• ż sounds like the s in measure
• ś is a softer sh
• ń is like the ny in canyon
• in świetnie, the w is pronounced like v, but before the voiceless t it is heard more like f, which is why SHFYET-nye is a useful approximation

These are only approximations, but they are good starting points.

Because Polish does not have articles like English.

So Polish does not normally use separate words for:

• a
• an
• the

In this sentence, nasza already makes the phrase specific:

• nasza drużyna = our team

That is enough without an article.