Stem-changing verbs: quiero, puedo, pido
You will learn a very common present tense pattern where a vowel in the stem changes. It is not random: it happens in the stressed forms, creating a clear table shape. This matters because these verbs show up constantly in everyday talk.
The rule
In the present tense, many high frequency verbs change a vowel inside the stem. This is not something to memorize as isolated exceptions. It follows a pattern: the stem vowel changes in the stressed forms. In a conjugation table, that creates a clear “boot” shape: every person changes except nosotros and vosotros.
There are three big families you will meet all the time.
At a glance
e→ie stem change, model with querer (boot shape: changes everywhere except nosotros and vosotros)
| persona | presente |
|---|---|
| yo | quiero |
| tú | quieres |
| él/ella/usted | quiere |
| nosotros/nosotras | queremos |
| vosotros/vosotras | queréis |
| ellos/ellas/ustedes | quieren |
Heard in real Spanish
Native speakers on YouTube, in videos about something other than grammar. The notion is in pink. Each clip starts a second before the line.
Yo estoy usando aceite de oliva suave, pero puedes usar cualquier otro aceite.
I'm using mild olive oil, but you can use any other oil.
Tortilla de papas, la receta de tortilla Española que mas gusta en casa para desayunar, fácil y rica by Katastrofa La Cocina · Watch on YouTube
¿Por qué las polillas se sienten atraídas hacia la luz?
Why are moths attracted to light?
Polillas Mini Documental by Morfo · Watch on YouTube
Examples
- Yo quiero café.I want coffee.querer is e→ie: quiero, quieres, quiere, but queremos, queréis keep e.
- Tú piensas mucho.You think a lot.pensar is e→ie: piensas, piensa, but pensamos, pensáis.
- Yo empiezo a las ocho.I start at eight.empezar is e→ie: empiezo, empiezas, empieza.
What to remember
- The stem vowel changes in the stressed forms, not in nosotros or vosotros.
- Three very common families: e→ie, o→ue, e→i.
- The “boot” shape in the table helps you see the pattern quickly.
- Some verbs are irregular only in yo: pongo, salgo, sé, veo, doy.
Check yourself
1 Complete with the correct present tense form of querer.
Yo ___ café.
- quiero
- queres
- queremos
- queréis
Show the answer
quiero. With yo, querer uses the e→ie change: quiero.
2 Choose the correct nosotros form of poder.
- podemos
- puedemos
- pudemos
- puede
Show the answer
podemos. With nosotros there is no stem change: podemos.
Take the full lesson
“Irregular verbs: e→ie, o→ue” in the Streal course: the whole explanation, the quiz, and every YouTube extract picked for it. Free to start, nothing to install. The full lesson goes on with the rest of the explanation and more examples, the common mistakes and the practice quiz.