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Spanish 101B

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Irregular Verbs in the Present tense

Irregular verbs don't follow the normal spelling pattern when they are conjugated. This happens in English too!

For example, let's look at the verb “To Be.” It is conjugated: I am, you are, he is...etc.

We've already looked at some irregular Spanish verbs: Ser (to Be), Ir (to Go)

There are different kinds of irregularities. Some have gross irregularities like Ser (to Be) and Ir (to Go); some add letters to help with pronunciation or to stabilize the weak unaccented "i" like Oír ; and others, like Haber, have more than just the irregular Yo form.

Very Irregular verbs


Él, ella, usted


Ellos, ellas, ustedes


soy eres es somos son


estoy estás está estamos están


oigo oyes oye oímos oyen
Ir voy vas va vamos van


This is the infinitive for "Hay"

he has ha hemos han

Some verbs are irregular only in the Yo form:

Verbs Irregular in the Yo form


Él, ella, Usted


Ellos, ellas, Uds.

Dar doy das da damos dan
Hacer hago haces hace hacemos hacen
Poner pongo pones pone ponemos ponen
Saber sabes sabe sabemos saben


Salir de = Get out of, Leave from
Salir con = Go out with
Salir + a + Infinitive = Leave to Go Do Something
Salir + para + destination = to head out for a place
salgo sales sale salimos salen
Traducir traduzco traduces traduce traducemos traducen

Some verbs have an irregular Yo form and are stem-changers as well, like Tener (to Have). Remember that the Nosotros form does not stem-change. Think "No!" for Nosotros.

Stem-changers Irregular in the Yo form


Él, ella, Usted


Ellos, ellas, Uds.

Decir digo dices dice decimos dicen
Tener tengo tienes tiene tenemos tienen
Venir vengo vienes viene venimos vienen

Stem-changing verbs are not considered irregular verbs. Rather they are a specific type of verb. Stem-changers have vowels in the stem (root) which either change to a different vowel or to a combination of two vowels when conjugated.