Uważaj na gorący piekarnik, kiedy gotujesz obiad.

Uważaj is the imperative form, so it means be careful or watch out.

It comes from the verb uważać. In this sentence, the speaker is telling one person directly to be careful, so Polish uses the singular informal command:

• uważaj = be careful! / watch out!

Related forms:

• uważajcie = be careful! (to more than one person, or sometimes informal plural)
• niech pan/pani uważa = please be careful (formal)

So uważaj is the natural form if you are speaking to one person informally.

Because Polish commonly uses the pattern:

uważać na + accusative

This means to watch out for, to be careful of, or to be mindful of something.

So:

• uważaj na psa = watch out for the dog
• uważaj na schody = be careful on the stairs / watch out for the stairs
• uważaj na gorący piekarnik = watch out for the hot oven

This is just a fixed and very common Polish construction. Even though na often means on or onto, here it does not mean that literally.

Because na in uważaj na ... takes the accusative case, and piekarnik is a masculine inanimate noun.

For masculine inanimate nouns, the accusative singular is usually the same as the nominative singular.

So:

• nominative: gorący piekarnik
• accusative: gorący piekarnik

That is why the form does not visibly change here.

Compare that with a masculine animate noun, where accusative would look different:

• widzę miłego chłopca = I see a nice boy

But with piekarnik (inanimate), the form stays:

• na gorący piekarnik

It is in the accusative singular.

The reason is that the phrase uważać na requires the accusative:

• uważać na coś

In this sentence:

• na piekarnik = for the oven / of the oven, in the sense of watch out for the oven

Even though gorący piekarnik looks like the dictionary form, grammatically it is still accusative here.

Gorący means hot in the physical sense: something that has a high temperature and can burn you.

So here it means the oven is hot to the touch or heated.

A few useful comparisons:

• gorący = hot
• ciepły = warm
• zimny = cold

In kitchen contexts, gorący is the normal word if something is dangerously hot.

Because Polish often uses the present tense for actions happening at the same time or for general repeated situations.

So:

• kiedy gotujesz obiad literally looks like when you cook dinner/lunch
• but in natural English it may correspond to when you are cooking dinner or when you cook dinner, depending on context

Polish does not need a special progressive form like English are cooking. The plain present tense gotujesz can cover that meaning.

Because gotować is imperfective, and that fits the meaning here.

In this sentence, the focus is on the ongoing activity of cooking, not on finishing it. So Polish uses:

• gotujesz = you are cooking / you cook

By contrast:

• ugotować is usually perfective
• ugotujesz often means you will cook or you will have cooked / finish cooking

So kiedy gotujesz obiad means while/when you are cooking the meal, which is exactly the idea needed here.

Not always. Obiad is one of those words that does not match English meal words perfectly.

In Polish, obiad usually means the main cooked meal of the day. Depending on the family, schedule, or region, that might correspond more closely to:

• lunch
• dinner
• sometimes something between the two in English terms

So if your translation says dinner, that may be fine in context, but learners should know that obiad is culturally broader than English dinner.

Because in Polish, a subordinate clause introduced by words like kiedy is normally separated by a comma.

So:

• Uważaj na gorący piekarnik, kiedy gotujesz obiad.

You would also see:

• Kiedy gotujesz obiad, uważaj na gorący piekarnik.

In both versions, the comma is standard.

This is one area where Polish punctuation is often more regular than English.

Yes. Polish word order is quite flexible.

You can also say:

• Kiedy gotujesz obiad, uważaj na gorący piekarnik.

This means the same thing. The difference is mainly one of focus or rhythm:

• Uważaj na gorący piekarnik... puts the warning first
• Kiedy gotujesz obiad... sets the scene first

Both are natural.

Yes, this version is singular informal, because of uważaj and gotujesz.

Other versions:

To more than one person:

• Uważajcie na gorący piekarnik, kiedy gotujecie obiad.

Formal singular:

• Niech pan uważa na gorący piekarnik, kiedy gotuje pan obiad.
• Niech pani uważa na gorący piekarnik, kiedy gotuje pani obiad.

So the original sentence is the one you would use with one person you address informally.

No. Uważać has several meanings, so learners often get confused by it.

Common uses include:

• uważaj! = be careful!
• uważać na coś = watch out for something
• uważać, że... = think that... / believe that...
• uważać na lekcji = pay attention in class

So in this sentence, the meaning comes specifically from the pattern:

• uważaj na + noun

That is why it means watch out for / be careful of the hot oven.