Questions & Answers about Piekarnik jest gorący, więc nie dotykaj go.
Polish has no articles, so there is no separate word for the or a/an.
So piekarnik can mean:
- an oven
- the oven
The context tells you which one is meant. In this sentence, English naturally uses the oven.
Jest is the 3rd person singular present form of być = to be.
So:
- piekarnik = oven
- jest = is
- gorący = hot
In a sentence like Piekarnik jest gorący, Polish normally keeps jest. Unlike in some other sentence types, you do not usually drop it here.