Learn Turkish: Yarın büyük bir parti veriyoruz. - We are throwing a big party tomorrow.

You would simply replace the time word yarın (tomorrow) with ne zaman (when). The question becomes: Ne zaman büyük bir parti veriyoruz? In Turkish, question words usually sit in the exact same spot in the sentence as the answer they are asking for.

Why is the word order büyük bir parti instead of bir büyük parti?

In Turkish, when you describe a noun using both an adjective (like büyük, meaning big) and the word bir (a/an), the adjective almost always comes first. The rule is "adjective + bir + noun," which feels a bit backwards because it literally translates to "big a party."

The verb veriyoruz comes from vermek (to give). Do you "give" parties in Turkish?

Exactly! While in English you "throw," "host," or "have" a party, the standard Turkish expression is parti vermek (literally "to give a party").

Why does the verb veriyoruz (we are giving) use the present continuous tense (-yor) if the party is happening yarın (tomorrow)?

Just like in English when we say "We are throwing a party tomorrow," Turkish frequently uses the present continuous tense to talk about fixed, scheduled plans in the near future.