Breakdown of Gracias por haber organizado este congreso.
organizar
to organize
por
for / by / through / in (during a part of the day)
gracias
thank you / thanks
este
this (m.sg., also esta, estos, estas, esto)
Questions & Answers about Gracias por haber organizado este congreso.
Why is the infinitive haber used here instead of the gerund habiendo, since the English translation is "having"?
In Spanish, when any verb immediately follows a preposition (like por), it must be in the infinitive form. English uses the gerund ("-ing" form) after prepositions, but Spanish always uses the infinitive, making the compound infinitive haber organizado the correct choice here.
What is the exact difference in meaning between saying Gracias por organizar and Gracias por haber organizado?
Gracias por organizar uses the simple infinitive and could refer to an ongoing or even future event. Using the compound infinitive haber organizado clearly emphasizes that the organizing is a completely finished action in the past.
Could I use para instead of por after gracias?
Does congreso only refer to a political "congress"?
Not at all! While it can refer to a political body, in everyday Spanish congreso is widely used to mean a "conference," "convention," or "symposium" for professionals, academics, or businesses.