Irregular Verb Patterns
Here, we will discuss a few common irregular verbs, and the changes that occur in their formation. First, we will discuss verbs that are irregular in their 'Yo' form
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These verbs are irregular in their conjugation for "I" forms, but continue normal conjugations for all other tenses.
These can further be divided in two categories. "Yo forms with verb-oy" and "Yo forms with verb-go"
Verb-oy Ending
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Verb
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Yo
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Tú
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Él / Ella
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Dar
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Yo doy
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Tú das
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Él da
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Estar
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Yo estoy
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Tú estas
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Él esta
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Verb-go Ending
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Verb
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Yo
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Tú
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Él
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decir
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Yo digo
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Tú dices
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Él dice
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poner
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Yo pongo
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Tú pones
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Él pone
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caer
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caigo
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caes
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cae
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Irregular Verb Type 2: Stem Changing - First Vowel Modification
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In this form-change, the root of the verb includes an additional vowel, where the first vowel occurs in the word.
Unlike the previously discussed irregulars, all conjugations use this modification.
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Stem Changing Verbs
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Verb
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Yo
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Tú
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Él
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Jugar
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Yo juego
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Tú juegas
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Ella juega
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Doler
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Yo Duelo
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Tú dueles
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Ella duele
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Poder*
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Yo puedo
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Tú puedes
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Él pueda
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Irregular Verb Type 3: Full Verb Change
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In this form-change, the root of the verb doesn't always appear like its infinitive form.
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Full Verb Change
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Verb
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Yo
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Tú
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Él
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Nosotros
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Ellos
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Ir
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Yo voy
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Tú vas
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Ella va
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Nosotros vamos
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Ellos van
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Ser *
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Yo soy
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Tú eres
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Él es
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Nosotros somos
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Ellas son
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