Stem-changing Verbs

Patterns

Not every verb is stem-changing, but those that are follow some patterns.

Look at the vowel before the ar/er/ir ending. That's the vowel that will change. 

e-ie

querer : to want

The vowel before the ending is always the vowel that will change.

This is the ending

yo

él/ella/Ud.

nosotros

ellos/ellas/Uds

quiero

quieres

quiere

quieren

queremos

pobrecito nosotros.  

No stem change for him. 

e-i

pedir : to ask for

The vowel before the ending is always the vowel that will change.

This is the ending

yo

él/ella/Ud.

nosotros

ellos/ellas/Uds

pido

pides

pide

piden

pedimos

pobrecito nosotros.  

No stem change for him. 

o-ue

poder : to be able to

The vowel before the ending is always the vowel that will change.

This is the ending

yo

él/ella/Ud.

nosotros

ellos/ellas/Uds

puedo

puedes

puede

pueden

podemos

pobrecito nosotros.  

No stem change for him. 

Other stem-changing verbs

u-ue

jugar : to play (game)

The vowel before the ending is always the vowel that will change.

This is the ending

yo

él/ella/Ud.

nosotros

ellos/ellas/Uds

juego

juegas

juega

juegan

jugamos

pobrecito nosotros.  

No stem change for him. 

e-ie

cerrar- to close

comenzar- to begin

hervir - to boil

perder - to lose

preferir- to prefer

querer- to want

recomendar - to recommend

o-ue

poder - to be able to

almorzar - to have lunch

costar - to cost

doler- to hurt

dormir- to sleep

encontrar - to find

envolver - to wrap

probar - to taste/try

volver- to return

e-i

servir- to serve

competir- to compete

freír - to fry

pedir- to ask for

seguir - to continue/follow

u-ue

jugar - to play

This is the only verb with a u-ue stem-change!!!

Vamos a practicar

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Milpitas High School, Milpitas, California

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