There are many verbs that are irregular in the preterite. Their forms must be memorized.
DAR:
di, diste, dio, dimos, disteis, dieron
IR:
fui, fuiste, fue, fuimos, fuisteis, fueron
SER:
fui, fuiste, fue, fuimos, fuisteis, fueron
The rest of the irregular verbs share the preterite endings -e,
-iste, -o, -imos, -isteis, -ieron. Notice
that none of the endings have accent marks. For these verbs you can learn
the irregular preterite stem and use the appropriate endings. NOTE: The
third person singular form of hacer has a spelling change of c
> z: hizo. Also, the third person plural form of decir
and traer does not use the -i- of the ending: dijeron,
trajeron.
hacer > hic- |
estar > estuv- |
tener > tuv- |
poder > pud- |
poner > pus- |
querer > quis- |
saber > sup- |
venir > vin- |
decir > dij- |
traer > traj- |