e:ie e:i o:ue
The stem change occurs in all forms EXCEPT nosotros/as (and vosotros/as in Spain). The last vowel of the stem will have the stem change.
Ejemplos:
preferir (e:ie)---------------to prefer
prefiero preferimos
prefieres
prefiere prefieren
Other e:ie stem-changing verbs:
recomendar--------------------------to recommend
pensar--------------------------------to think
empezar------------------------------to begin
comenzar----------------------------to begin
despertarse--------------------------to wake up
divertirse-----------------------------to have fun/enjoy oneself
entender-----------------------------to understand
querer--------------------------------to want/to love
sentarse-----------------------------to sit down
sentirse---------------------------------to feel
perder--------------------------------to lose
pedir (e:i)---------------------------to ask for/to request
pido pedimos
pides
pide piden
Other e:i stem-changing verbs:
repetir------------------------to repeat
servir-------------------------to serve
vestirse----------------------to get dressed
poder (o:ue)--------------------------to be able to
puedo podemos
puedes
puede pueden
Other o:ue stem-changing verbs:
soler-------------------------------to tend to
acostarse-------------------------to go to bed
dormir---------------------------to sleep
encontrar------------------------to find
morir-----------------------------to die
recordar-------------------------to remember
soñar-----------------------------to dream
volver------------------------------to return
NOTE: There is only one verb in Spanish that changes from u:ue-----JUGAR
jugar (u:ue)-----------------------to play (games, sports)
juego jugamos
juegas
juega juegan