Breakdown of ¿Quién ha hecho esto? Necesitamos la prueba.
esto
this
quién
who
hacer
to do, to make
necesitar
to need
Questions & Answers about ¿Quién ha hecho esto? Necesitamos la prueba.
Why is the word "hecho" used instead of "hacido"?
Hecho is the irregular past participle of hacer (to do/make). Instead of following the regular -ido ending rule, hacer has a special form ending in -cho. You pair it with ha to say "has done".
Why do we use "ha" for "has" instead of "tiene"?
Why is it "esto" and not "este" or "esta"?
Since "quién" means who, why not use the plural "quiénes" if we don't know how many people did it?
Does "la prueba" always mean "the proof"?