Kelnerka przynosi nam menu i uśmiecha się.

Yes. Kelnerka is the feminine form and means waitress. The masculine form is kelner, meaning waiter.

Polish nouns have grammatical gender, and names for people often match the person’s sex:

• kelner = waiter
• kelnerka = waitress

So in this sentence, the subject is specifically a female server.

Yes. Przynosi is the present tense of przynosić, an imperfective verb.

In Polish, the present tense can often cover both:

• brings
• is bringing

So Kelnerka przynosi nam menu can mean either:

• The waitress brings us the menu
• The waitress is bringing us the menu

English often chooses between simple present and present continuous, but Polish does not make that distinction in the same way here.

Because nam is the dative form of we/us, and the dative is used for the person receiving something.

Here:

• przynosi nam menu = brings the menu to us

By contrast, nas is usually the accusative or genitive form, so it would not fit here.

A useful comparison:

• widzi nas = she sees us
• daje nam menu = she gives us the menu
• przynosi nam menu = she brings us the menu

Because menu is usually an indeclinable borrowed noun in Polish. That means it keeps the same form instead of changing its ending for case.

So even though it is the object of the verb, it still stays menu.

This is common with some foreign words in Polish. You just learn them as words that do not decline.

The full verb is uśmiechać się, which means to smile.

So:

• uśmiecha się = she smiles / she is smiling

The się is part of the verb. In many Polish verbs, się does not translate neatly into English as a separate word. You usually need to learn the whole expression together:

• uśmiechać się = to smile
• śmiać się = to laugh
• bać się = to be afraid

So it is best to think of uśmiechać się as one unit.

Not by itself. Uśmiecha się simply means smiles.

If you want to say smiles at us, Polish normally adds do nas:

• Kelnerka uśmiecha się do nas = The waitress smiles at us

So in your sentence, the meaning is just that she is smiling, unless the wider context makes it clear who she is smiling at.

Because Polish often leaves out subject pronouns when they are not needed.

In English, you must say she brings or she smiles. In Polish, the verb form and the noun subject already make it clear who is doing the action:

• Kelnerka przynosi... already tells you it is the waitress
• przynosi and uśmiecha się are both third-person singular forms

Adding ona would usually be unnecessary unless you want extra emphasis:

• Ona przynosi nam menu = She is the one bringing us the menu

Yes. Polish word order is more flexible than English because case endings help show what each word is doing.

The original sentence is a neutral, natural version:

• Kelnerka przynosi nam menu i uśmiecha się.

But other orders are possible for emphasis, for example:

• Kelnerka nam przynosi menu i uśmiecha się.
• Nam kelnerka przynosi menu i uśmiecha się.

These versions may sound slightly different in emphasis, but they are still understandable. The original is the most straightforward choice for a learner.

Sometimes yes, but not completely freely.

In this sentence:

• uśmiecha się is the most natural order

You may also hear:

• Kelnerka się uśmiecha

That is possible, but it shifts the rhythm or emphasis a little.

One important rule: się normally does not stand at the very beginning of a clause. So it is better to keep it after the verb or near it until you get more comfortable with Polish word order.