Today’s topic is How To Conjugate Spanish Stem Changing Verbs O to UE.
I also want to warn you about a common mistake in speaking AND writing in Spanish.
This is a mistake that I saw someone make today here in Medellin, Colombia. This is a very common mistake and it involves conjugating O to UE stem-changing Spanish verbs.
How To Say Love Letter In Spanish
Earlier today, an American “amigo” of mine, here in Medellin, asked me to proofread a “carta de amor” (love letter)

He was emailing the “carta de amor” to his Colombian “novia” (girlfriend). And one of the sentences is his letter read:
“Te rogo que me perdones, no quise lastimarte.”
(I beg you to forgive me, I didn’t want to hurt you.)

If you own a copy of our Verbarrator (Spanish verb conjugation software) and you have invested sometime learning how to conjugate Spanish verbs with your copy of the verbarrator, then I am sure that you recognized the mistake that my “amigo” made.
For those who do NOT own a copy of the Verbarrator, then let me explain . . .
How To Conjugate Stem Changing O to UE Spanish Verbs
The Spanish verb “rogar” (to beg) is a stem-changing verb where the verb’s stem changes from “o” to “ue” in all forms but nosotros and vosotros.
Look at how the verb is conjugated in the present tense:
Ruego (yo)
Ruegas (tú)
Ruega (él, ella, usted)
Rogamos (nosostros)
Ruegan (ellos, ellas, ustedes)
So my “amigo” should have written “Te ruego . . .” (I beg you . . .) and NOT “te rogo . . . ”
Some other Spanish verbs that are conjugated the same way (stem changes from “o” to “ue”)
are:
almorzar (to have lunch)
colgar (to hang up)
contar (to count, to tell)
costar (to cost)
dormir (to sleep)
morder (to bite)
morir (to die)
mostrar (to show)
mover (to move)
probar (to prove)
recordar (to remember)
sonar (to sound, to ring)
soñar (to dream or to dream about)
volver (to return)
volar (to fly)

