Learn Romanian: Dacă ești liber, mergem la piață. - If you are free, we'll go to the market.

Liber is the masculine form of the adjective for "free." If you are speaking to a woman, you need to use the feminine form to match her gender, so the sentence would start with Dacă ești liberă.

The English translation says "we'll go," but isn't mergem in the present tense?

Yes, mergem literally means "we go." Just like in English, it is very common in Romanian to use the present tense to talk about future plans, especially when deciding what to do next. You don't need a complicated future tense here!

Where are the words for "you" and "we" in this sentence?

Romanian often drops subject pronouns like tu (you) and noi (we) because the verb endings already tell you who is doing the action. Ești always means "you are" and mergem always means "we go."

Why is it la piață and not la piața?

After the preposition la (meaning "to" or "at"), Romanian usually drops the definite article ("the") for common places. So, instead of saying la piața (to the market), you just say la piață. It works the same way with words like la școală (to school) or la muncă (to work).