¿Quién ha organizado este concurso para ganar el premio?

Questions & Answers about ¿Quién ha organizado este concurso para ganar el premio?

Why do we use ha (the he/she/it form) after quién?
In Spanish, the question word quién (who) is singular, so it takes the third-person singular verb form. That is why we use ha from the helper verb haber. If you were asking a group and meant "who (plural) have organized...", you would use quiénes han.
How is the past participle organizado formed here?
For regular -ar verbs like organizar (to organize), you simply drop the -ar ending and add -ado. Combined with ha, it creates the present perfect tense ha organizado (has organized).
Why is it este concurso? I thought masculine words used esto for "this".
This is a very common mix-up! Este is the correct word for "this" when it comes right before a masculine singular noun like concurso. Esto is a neutral word used only when you are talking about a general idea, a situation, or an unknown object.
Why do we use para before ganar instead of por?
We use para followed by an infinitive verb (like ganar) to express a purpose or a specific goal. It translates perfectly to "in order to." So, para ganar means "in order to win."

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