Usiądźcie przy stole i spróbujcie zupy, zanim będzie zimna.

Because the sentence is giving instructions or an invitation: sit down and try the soup.

• usiądźcie = sit down (addressed to more than one person)
• spróbujcie = try / taste (also addressed to more than one person)

The ending -cie is the key sign that this is the 2nd person plural imperative, used when speaking to you all.

Usiądźcie comes from usiąść, which is a perfective verb. Here it means take a seat / sit down, focusing on completing the action.

That is different from an imperfective idea like siadajcie, which would suggest something more like:

• be sitting down
• sit down repeatedly
• or sometimes a softer, ongoing instruction depending on context

In this sentence, usiądźcie sounds natural because the speaker wants the action completed first: sit down at the table.

After przy, Polish normally uses the locative case.

So:

• stół = table
• przy stole = at the table

This is a very common pattern:

• przy oknie = by the window
• przy drzwiach = by the door
• przy biurku = at the desk

So stole is the locative singular form of stół.

This is a very common learner question. After spróbować, Polish often uses the genitive, especially when the meaning is try some of something.

So:

• zupa = soup
• zupy = of soup / some soup

In this sentence, spróbujcie zupy means try some soup or taste the soup.

This is sometimes called a partitive genitive: you are trying some amount of the soup, not treating it as a fully affected direct object in the same way English does.

So although English says try the soup, Polish naturally says spróbować zupy.

Usually, learners should use spróbować + genitive, so spróbujcie zupy is the safest and most standard choice.

You may sometimes encounter accusative with related verbs in modern usage or in certain expressions, but for spróbować, genitive is the form most learners should expect and use.

So in this sentence, zupy is exactly what you should learn.

Because Polish usually does not need subject pronouns when the verb ending already shows who is being addressed.

Here:

• usiądźcie already means you all sit down
• spróbujcie already means you all try

So adding wy would usually be unnecessary unless the speaker wants emphasis or contrast.

For example:

• Usiądźcie przy stole. = Sit down at the table.
• Wy usiądźcie przy stole, a oni niech poczekają. = You sit at the table, and let them wait.

Yes. Usiądźcie and spróbujcie are plural commands, so they are addressed to more than one person.

If the speaker were talking to just one person informally, the forms would be:

• usiądź
• spróbuj

So:

• Usiądź przy stole i spróbuj zupy. = to one person
• Usiądźcie przy stole i spróbujcie zupy. = to several people

Not really. This is mainly a command to multiple people, not a formal command to one person.

Modern Polish usually expresses politeness to one person in a different way, for example:

• Niech pan usiądzie...
• Niech pani spróbuje...

So usiądźcie is best understood as you all, sit down, not as a polite singular form.

Because the soup is not cold yet; the speaker means before it becomes / is cold in the future.

Polish often uses the future tense after zanim when referring to a future situation.

So:

• będzie = will be
• zanim będzie zimna = before it gets/is cold

Using jest would suggest a present state, which does not fit the meaning here.

Będzie is the 3rd person singular future of być (to be).

It refers to zupa (soup), even though the noun is not repeated in the second clause.

So the structure is understood as:

• zanim [zupa] będzie zimna

In English we often say before it gets cold, but Polish literally says before [it] will be cold.

Because zimna agrees with the implied subject zupa, which is:

• feminine
• singular
• nominative

So:

• zupa → feminine singular
• zimna → feminine singular adjective form

Even though zupa is not repeated, it is still understood.

Compare:

• Zupa będzie zimna.
• Mleko będzie zimne.
• Chleb będzie zimny.

The adjective changes to match the noun.

Because Polish often leaves out words that are already obvious from context.

In zanim będzie zimna, everyone understands that the soup is what will become cold. Repeating zupa would be possible, but unnecessary.

So the sentence is more natural and efficient without repeating it.

I simply means and. It joins the two commands:

• usiądźcie przy stole
• spróbujcie zupy

So the sentence gives two linked actions:

1. sit down at the table
2. try the soup

Yes, Polish word order is more flexible than English, although not every version sounds equally natural.

The original order is very natural:

• Usiądźcie przy stole i spróbujcie zupy, zanim będzie zimna.

You could also move some parts for emphasis, for example:

• Spróbujcie zupy, zanim będzie zimna.
• Przy stole usiądźcie i spróbujcie zupy... — possible, but less neutral

So word order can change, but the original sentence is the most straightforward and idiomatic.

It can correspond to either in English, depending on context.

In this sentence, it most naturally suggests:

• try the soup
• taste some soup
• have some soup

The Polish verb spróbować often carries the idea of having a try/taste of something, not just making an attempt in an abstract sense.

So here it is about tasting the soup, not attempting soup.

The dictionary forms are:

• usiąść → usiądźcie
• spróbować → spróbujcie
• być → będzie

This is useful because imperative forms in Polish can look quite different from dictionary forms, especially with stem changes like:

• usiąść → usiądź
• usiąść → usiądźcie

So it is worth learning both the infinitive and common imperative forms together.