Haber: Very Common, Very Irregular

One of the verbs you'll end up using the most often as you learn Spanish is haber. It's the rough equivalent of the English verb "have" — not the kind of "have" the means you possess something, but the kind of "have" in sentences such as "I have seen" and "she will have gone." Unfortunately, as our revamped conjugation page shows, it's conjugated irregularly in almost every situation.