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Spanish Verb Conjugation: Indicative Mood: Present Tense
Present Tense: O -> UE Stem-Changers

©RCAguilar

OBJECTIVE:
You know what to do.
TASK:
Whatever it takes.
PERPLEXED?

Not now. I had a really bad night.

Why is it called a stem-changing verb?
How many times are you gonna ask me that!
If you had been here the last 3 days you would've heard the explanations!
I don't care how sick you were! You aren't dead, and that's the only good excuse there is for not showing up to class!
See if you can get hold of somebody else's notes! They should charge you though ...

 
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VERB CONJUGATION
Indicative Mood
Present Tense
Regular -ar Verbs
Regular -er Verbs
Regular -ir Verbs
Stem e -> ie
Stem o -> ue
Stem e -> i
Stem iar: i ->
Stem uar: u ->
Stem uir: i -> y
Stem ger/gir: g -> j
Yo form -oy
Yo form -zco
Yo form -go
Imperfect Tense
AR Verbs
ER & IR Verbs
Preterite Tense
Regular AR Verbs
Ending -car
Ending -gar
Ending -zar
ER/IR Verbs
ER/IR Verbs vowel Stem
IR Stem-changers
Irregular Stems
Future Tense
Regular Verbs
Irregular Stems
Conditional Tense
Regular Verbs
Irregular Stems
Progressive Tenses
Perfect Tenses

Start using 'em!
With Interrogatives
¿Cuándo?
¿Cuándo mueves?
When do you move?
When are you moving?
 
¿Cuándo duerme ella?
When does she sleep?
When is she sleeping?
 
¿Cuándo vuelo?
When do I fly?
When am I flying?
 
 

Reference
Subject Pronouns
yo
nosotros
nosotras
tú*
vosotros
vosotras
él
ella
Usted
ellos
ellas
Ustedes
*In some countries in Central & South America vos is used instead of .

Reflexive Pronouns
me nos
te os
se  se

Direct Object Pronouns
me nos
te os
lo
la
lo/la
los
las
los/las

Indirect Object Pronouns
me nos
te os
le les
These are irregular verbs because they entail a stem change: O -> UE
 
AR acordar to remember erinnern
encontrar to meet, encounter treffen, begegnen
volar to fly fliegen
ER doler to hurt schmerzen
mover to move bewegen
volver to return kehren, zurückkehren
IR dormir to sleep schlafen
morir to die sterben
In some forms the -o nearest the end of the stem becomes an -ue.
Drop the -ar, the -er, or the -ir: That's the stem !!
To see the present tense conjugated forms of these verbs, click on a pronoun below:
The nosotros & vosotros forms do not require the stem change in the present tense.
YO
ÉL
ELLA
USTED
NOSOTROS
VOSOTROS
ELLOS
ELLAS
USTEDES
Present tense: Stem changing verbs: O -> UE
Yo form
To make this form, drop the -ar, -er, or -ir.
Look for the O nearest the end of the stem, and change it to UE.
Add the normal ending for present tense conjugation.
This is important to realize, because the present tense yo form is the basis for forming present subjunctive forms.
AR
deutsch
acordar acuerdo I remind I do remind I'm reminding
ich ermahne
encontrar encuentro I encounter, meet I do encounter, meet I'm encountering, meeting
ich treffe
volar vuelo I fly I do fly I'm flying
ich fliege
ER
doler duelo I hurt I do hurt I'm hurting
ich schmerze
mover muevo I move I do move I'm moving
ich bewege
volver vuelvo I return I do return I'm returning
ich kehre zurück
IR
dormir duermo I sleep I do sleep I'm sleeping
ich schlafe
morir muero I die I do die I'm dying
ich sterbe
What do they have in common now ?
The stem (verb minus AR, ER or IR) tells you the action.
Using the -o ending says I am doing this action, and it's going on NOW.
Each verb form in Spanish matches a specific pronoun, so Spanish doesn't need to use the pronoun.
That means: each of the conjugated forms you see says ALL of the given "meaning."
The YO is understood, because of the ending.
You don't need to say YO. If you do add the YO, it usually adds emphasis, saying I dooo ...
A look at other forms:
YO
ÉL
ELLA
USTED
NOSOTROS
VOSOTROS
ELLOS
ELLAS
USTEDES
Back to Top
Present tense: Stem changing verbs: O -> UE
form
To make this form, drop the -ar, -er, or -ir.
Look for the O nearest the end of the stem, and change it to UE.
Add the normal ending for present tense conjugation.
This is important to realize, because the present tense yo form is the basis for forming present subjunctive forms.
AR
deutsch
acordar acuerdas you remind you do remind you're reminding
du ermahnst
encontrar encuentras you encounter, meet you do encounter, meet you're encountering, meeting
du triffst
volar vuelas you fly you do fly you're flying
du fliegst
ER
doler dueles you hurt you do hurt you're hurting
du schmerzt
mover mueves you move you do move you're moving
du bewegst
volver vuelves you return you do return you're returning
du kehrst zurück
IR
dormir duermes you sleep you do sleep you're sleeping
du schläfst
morir mueres you die you do die you're dying
du stirbst
What do they have in common now ?
The stem (verb minus AR, ER or IR) tells you the action.
Using the -as or -es ending says you are doing this action, and it's going on NOW.
Each verb form in Spanish matches a specific pronoun, so Spanish doesn't need to use the pronoun.
That means: each of the conjugated forms you see says ALL of the given "meaning."
The is understood, because of the ending.
You don't need to say . If you do add the , it usually adds emphasis, saying you dooo ...
A look at other forms:
YO
ÉL
ELLA
USTED
NOSOTROS
VOSOTROS
ELLOS
ELLAS
USTEDES
Back to Top
Present tense: Stem changing verbs: O -> UE
Él form
To make this form, drop the -ar, -er, or -ir.
Look for the O nearest the end of the stem, and change it to UE.
Add the normal ending for present tense conjugation.
This is important to realize, because the present tense yo form is the basis for forming present subjunctive forms.
AR
deutsch
acordar acuerda he reminds he does remind he's reminding
er ermahnt
encontrar encuentra he encounters, meets he does encounter, meet he's encountering, meeting
er trifft
volar vuela he flies he does fly he's flying
er fliegt
ER
doler duele he hurts he does hurt he's hurting
er schmerzt
mover mueve he moves he does move he's moving
er bewegt
volver vuelve he returns he does return he's returning
er kehrt zurück
IR
dormir duerme he sleeps he does sleep he's sleeping
er schläft
morir muere he dies he does die he's dying
er stirbt
What do they have in common now ?
The stem (verb minus AR, ER or IR) tells you the action.
Using the -a or -e ending says he is doing this action, and it's going on NOW.
Each verb form in Spanish matches a specific pronoun, so Spanish doesn't need to use the pronoun.
That means: each of the conjugated forms you see says ALL of the given "meaning."
The ÉL is understood, because of the ending.
You don't need to say ÉL. If you do add the ÉL, it usually adds emphasis, saying he doooes ...
A look at other forms:
YO
ÉL
ELLA
USTED
NOSOTROS
VOSOTROS
ELLOS
ELLAS
USTEDES
Back to Top
Present tense: Stem changing verbs: O -> UE
Ella form
To make this form, drop the -ar, -er, or -ir.
Look for the O nearest the end of the stem, and change it to UE.
Add the normal ending for present tense conjugation.
This is important to realize, because the present tense yo form is the basis for forming present subjunctive forms.
AR
deutsch
acordar acuerda she reminds she does remind she's reminding
sie ermahnt
encontrar encuentra she encounters, meets she does encounter, meet she's encountering, meeting
sie trifft
volar vuela she flies she does fly she's flying
sie fliegt
ER
doler duele she hurts she does hurt she's hurting
sie schmerzt
mover mueve she moves she does move she's moving
sie bewegt
volver vuelve she returns she does return she's returning
sie kehrt zurück
IR
dormir duerme she sleeps she does sleep she's sleeping
sie schläft
morir muere she dies she does die she's dying
sie stirbt
What do they have in common now ?
The stem (verb minus AR, ER or IR) tells you the action.
Using the -a or -e ending says she is doing this action, and it's going on NOW.
Each verb form in Spanish matches a specific pronoun, so Spanish doesn't need to use the pronoun.
That means: each of the conjugated forms you see says ALL of the given "meaning."
The ELLA is understood, because of the ending.
You don't need to say ELLA. If you do add the ELLA, it usually adds emphasis, saying she doooes ...
A look at other forms:
YO
ÉL
ELLA
USTED
NOSOTROS
VOSOTROS
ELLOS
ELLAS
USTEDES
Back to Top
Present tense: Stem changing verbs: O -> UE
Usted form
To make this form, drop the -ar, -er, or -ir.
Look for the O nearest the end of the stem, and change it to UE.
Add the normal ending for present tense conjugation.
This is important to realize, because the present tense yo form is the basis for forming present subjunctive forms.
AR
deutsch
acordar acuerda you remind you do remind you're reminding
Sie ermahnen
encontrar encuentra you encounter, meet you do encounter, meet you're encountering, meeting
Sie treffen
volar vuela you fly you do fly you're flying
Sie fliegen
ER
doler duele you hurt you do hurt you're hurting
Sie schmerzen
mover mueve you move you do move you're moving
Sie bewegen
volver vuelve you return you do return you're returning
Sie kehren zurück
IR
dormir duerme you sleep you do sleep you're sleeping
Sie schlafen
morir muere you die you do die you're dying
Sie sterben
What do they have in common now ?
The stem (verb minus AR, ER or IR) tells you the action.
Using the -a or -e ending says you are doing this action, and it's going on NOW.
Each verb form in Spanish matches a specific pronoun, so Spanish doesn't need to use the pronoun.
That means: each of the conjugated forms you see says ALL of the given "meaning."
The USTED is understood, because of the ending.
You don't need to say USTED. If you do add the USTED, it usually adds emphasis, saying you dooo ...
A look at other forms:
YO
ÉL
ELLA
USTED
NOSOTROS
VOSOTROS
ELLOS
ELLAS
USTEDES
Back to Top
Present tense: Stem changing verbs: O -> UE
Nosotros & Nosotras form
To make this form, drop the -ar, -er, or -ir.
This is important to realize, because the present tense yo form is the basis for forming present subjunctive forms.
The nosotros form of these verbs is not affected, and follows the normal pattern for -ar verb conjugation.
AR
deutsch
acordar acordamos we remind we do remind we're reminding
wir ermahnen
encontrar encontramos we encounter, meet we do encounter, meet we're encountering, meeting
wir treffen
volar volamos we fly we do fly we're flying
wir fliegen
The nosotros form of these verbs is not affected, and follows the normal pattern for -er verb conjugation.
ER
doler dolemos we hurt we do hurt we're hurting
wir schmerzen
mover movemos we move we do move we're moving
wir bewegen
volver volvemos we return we do return we're returning
wir kehren zurück
The nosotros form of these verbs is not affected, and follows the normal pattern for -ir verb conjugation.
IR
dormir dormimos we sleep we do sleep we're sleeping
wir schlafen
morir morimos we die we do die we're dying
wir sterben
What do they have in common now ?
The stem (verb minus AR, ER or IR) tells you the action.
Using the -mos ending says we are doing this action, and it's going on NOW.
Each verb form in Spanish matches a specific pronoun, so Spanish doesn't need to use the pronoun.
That means: each of the conjugated forms you see says ALL of the given "meaning."
The NOSOTROS is understood, because of the ending.
You don't need to say NOSOTROS. If you do add the NOSOTROS, it usually adds emphasis, saying we dooo ...
A look at other forms:
YO
ÉL
ELLA
USTED
NOSOTROS
VOSOTROS
ELLOS
ELLAS
USTEDES
Back to Top
Present tense: Stem changing verbs: O -> UE
Vosotros & Vosotras form
To make this form, drop the -ar, -er, or -ir.
This is important to realize, because the present tense yo form is the basis for forming present subjunctive forms.
The vosotros form of these verbs is not affected, and follows the normal pattern for -ar verb conjugation.
AR
deutsch
acordar acordáis y'all remind y'all do remind y'all are reminding
ihr ermahnt
encontrar encontráis y'all encounter, meet y'all do encounter, meet y'all are encountering, meeting
ihr trefft
volar voláis y'all fly y'all do fly y'all are flying
ihr fliegt
The vosotros form of these verbs is not affected, and follows the normal pattern for -er verb conjugation.
ER
doler doléis y'all hurt y'all do hurt y'all are hurting
ihr schmerzt
mover movéis y'all move y'all do move y'all are moving
ihr bewegt
volver volvéis y'all return y'all do return y'all are returning
ihr kehrt zurück
The vosotros form of these verbs is not affected, and follows the normal pattern for -ir verb conjugation.
IR
dormir dormís y'all sleep y'all do sleep y'all are sleeping
ihr schlaft
morir morís y'all die y'all do die y'all are dying
ihr sterbt
What do they have in common now ?
The stem (verb minus AR, ER or IR) tells you the action.
Using the -áis, -éis, or -ís ending says y'all are doing this action, and it's going on NOW.
Each verb form in Spanish matches a specific pronoun, so Spanish doesn't need to use the pronoun.
That means: each of the conjugated forms you see says ALL of the given "meaning."
The VOSOTROS is understood, because of the ending.
You don't need to say VOSOTROS. If you do add the VOSOTROS, it usually adds emphasis, saying y'all dooo ...
A look at other forms:
YO
ÉL
ELLA
USTED
NOSOTROS
VOSOTROS
ELLOS
ELLAS
USTEDES
Back to Top
Present tense: Stem changing verbs: O -> UE
Ellos form
To make this form, drop the -ar, -er, or -ir.
Look for the O nearest the end of the stem, and change it to UE.
Add the normal ending for present tense conjugation.
This is important to realize, because the present tense yo form is the basis for forming present subjunctive forms.
AR
deutsch
acordar acuerdan they remind they do remind they're reminding
sie ermahnen
encontrar encuentran they encounter, meet they do encounter, meet they're encountering, meeting
sie treffen
volar vuelan they fly they do fly they're flying
sie fliegen
ER
doler duelen they hurt they do hurt they're hurting
sie schmerzen
mover mueven they move they do move they're moving
sie bewegen
volver vuelven they return they do return they're returning
sie kehren zurück
IR
dormir duermen they sleep they do sleep they're sleeping
sie schlafen
morir mueren they die they do die they're dying
sie sterben
What do they have in common now ?
The stem (verb minus AR, ER or IR) tells you the action.
Using the -an or -en ending says they are doing this action, and it's going on NOW.
Each verb form in Spanish matches a specific pronoun, so Spanish doesn't need to use the pronoun.
That means: each of the conjugated forms you see says ALL of the given "meaning."
The ELLOS is understood, because of the ending.
You don't need to say ELLOS. If you do add the ELLOS, it usually adds emphasis, saying they dooo ...
A look at other forms:
YO
ÉL
ELLA
USTED
NOSOTROS
VOSOTROS
ELLOS
ELLAS
USTEDES
Back to Top
Present tense: Stem changing verbs: O -> UE
Ellas form
To make this form, drop the -ar, -er, or -ir.
Look for the O nearest the end of the stem, and change it to UE.
Add the normal ending for present tense conjugation.
This is important to realize, because the present tense yo form is the basis for forming present subjunctive forms.
AR
deutsch
acordar acuerdan they remind they do remind they're reminding
sie ermahnen
encontrar encuentran they encounter, meet they do encounter, meet they're encountering, meeting
sie treffen
volar vuelan they fly they do fly they're flying
sie fliegen
ER
doler duelen they hurt they do hurt they're hurting
sie schmerzen
mover mueven they move they do move they're moving
sie bewegen
volver vuelven they return they do return they're returning
sie kehren zurück
IR
dormir duermen they sleep they do sleep they're sleeping
sie schlafen
morir mueren they die they do die they're dying
sie sterben
What do they have in common now ?
The stem (verb minus AR, ER or IR) tells you the action.
Using the -an or -en ending says they are doing this action, and it's going on NOW.
Each verb form in Spanish matches a specific pronoun, so Spanish doesn't need to use the pronoun.
That means: each of the conjugated forms you see says ALL of the given "meaning."
The ELLAS is understood, because of the ending.
You don't need to say ELLAS. If you do add the ELLAS, it usually adds emphasis, saying they dooo ...
A look at other forms:
YO
ÉL
ELLA
USTED
NOSOTROS
VOSOTROS
ELLOS
ELLAS
USTEDES
Back to Top
Present tense: Stem changing verbs: O -> UE
Ustedes form
To make this form, drop the -ar, -er, or -ir.
Look for the O nearest the end of the stem, and change it to UE.
Add the normal ending for present tense conjugation.
This is important to realize, because the present tense yo form is the basis for forming present subjunctive forms.
AR
deutsch
acordar acuerdan you remind you do remind you're reminding
Sie ermahnen
encontrar encuentran you encounter, meet you do encounter, meet you're encountering, meeting
Sie treffen
volar vuelan you fly you do fly you're flying
Sie fliegen
ER
doler duelen you hurt you do hurt you're hurting
Sie schmerzen
mover mueven you move you do move you're moving
Sie bewegen
volver vuelven you return you do return you're returning
Sie kehren zurück
IR
dormir duermen you sleep you do sleep you're sleeping
Sie schlafen
morir mueren you die you do die you're dying
Sie sterben
What do they have in common now ?
The stem (verb minus AR, ER or IR) tells you the action.
Using the -an or -en ending says they are doing this action, and it's going on NOW.
Each verb form in Spanish matches a specific pronoun, so Spanish doesn't need to use the pronoun.
That means: each of the conjugated forms you see says ALL of the given "meaning."
The USTEDES is understood, because of the ending.
You don't need to say USTEDES. If you do add the USTEDES, it usually adds emphasis, saying you dooo ...
A look at other forms:
YO
ÉL
ELLA
USTED
NOSOTROS
VOSOTROS
ELLOS
ELLAS
USTEDES
Back to Top