FHUHS Spanish

Some common verbs are entirely irregular in the preterite indicative. The irregularities can be more of less classified by the nature of the irregularity. You will note that none of these irregular forms carry any written accents anywhere in the paradigm.

Stem vowel ‘a’ to ‘u’

These verbs include: andar, caber, estar, haber, saber

Stem vowel ‘o’ to ‘u’

These verbs include poder and poner

Stem vowels ‘a’ and ‘e’ to ‘i’

These verbs include hacer and venir.

(note the ‘c’ to ‘z’ spelling change in the 3rd person singular to maintain the soft ‘c’ sound)

Completely irregular (suppletive)