Spanish Preterite Stem-Changing Verbs and Vocabulary

Overview of Preterite Stem-Changing Verbs

In the Spanish preterite tense, the rules regarding stem changes differ significantly depending on the verb ending (-ar, -er, or -ir).

  • -ar and -er Verbs: As established in previous lessons, stem-changing -ar and -er verbs do not undergo any stem change when conjugated in the preterite.

  • -ir Verbs: Unlike their counterparts, -ir stem-changing verbs do maintain a stem change in the preterite, though the patterns and applications are specific to certain forms.

Conjugation Patterns for -ir Stem-Changing Verbs

Stem-changing -ir verbs exhibit a vowel shift in the third-person singular (Ud./l/ella) and the third-person plural (Uds./ellos/ellas) forms. The two types of shifts are e → i and o → u.

Example 1: e→ie \rightarrow i Change

Verb: servir (to serve)

Person

Singular

Plural

1st Person

servserv (I served)

servimosservimos (We served)

2nd Person

servisteserviste (You served)

servisteisservisteis (You all served - Spain)

3rd Person

sirvisirvi (He/She/You formal served)

sirvieronsirvieron (Them/You all formal served)

Example 2: o→uo \rightarrow u Change

Verb: morir (to die)

Person

Singular

Plural

1st Person

mormor (I died)

morimosmorimos (We died)

2nd Person

moristemoriste (You died)

moristeismoristeis (You all died - Spain)

3rd Person

murimuri (He/She/You formal died)

murieronmurieron (Them/You all formal died)

Summary of Stem Shifts

The following table illustrates the shift from the infinitive stem to the preterite stem for specific verbs:

Infinitive

Verb Stem

Stem Change

Preterite Forms (3rd Person)

pedir

ped−ped-

pid−pid-

pidipidi, pidieronpidieron

dormir

dor−dor-

dur−dur-

durmidurmi, durmierondurmieron

Additional −ir-ir Stem-Changing Verbs

Several other -ir verbs follow these stem-changing rules in the preterite. They are categorized by their vowel shift:

Verbs with e → i change:

  • Conseguir (to get/obtain)

  • Divertirse (to have fun)

  • Preferir (to prefer)

  • Repetir (to repeat/have seconds)

  • Seguir (to follow/continue)

  • Sentir (to feel)

  • Sugerir (to suggest)

  • Vestirse (to get dressed)

Verbs with o → u change:

  • Dormir (to sleep)

  • Morir (to die)

Espaol en Vivo: Real-World Applications

This section highlights how these verbs are used in practical contexts, such as advertisements and customer reviews.

Ad Translation: Tu cocina.com

"Tu cocina.com prepares the best dishes for social and personalized events. Try them now! Have you seen our clients' comments? What are you waiting for?"

Customer Testimonials

  • Carmen Moreno: "Prefiero este servicio a cualquier otro!" (I prefer this service to any other!)

  • Ana Tejada: "Ped cuarenta arepas y me las prepararon en menos de dos horas." (I ordered forty arepas and they prepared them for me in less than two hours.)

  • Manuel Snchez: "Serv cachapas en la cena y todos mis invitados repitieron." (I served cachapas at dinner and all my guests had seconds/repeated.)

Contextual Examples and Vocabulary

  • Example Sentence: "Nos sirvieron las croquetas deliciosas." (They served us the delicious croquettes.)

  • Example Sentence: "Pudimos probarlas todas, y al final Manuel prefiri los calamares!" (We were able to try them all, and in the end Manuel preferred the squid!)

Key Vocabulary Definitions

  • Ya: Now

  • Cualquier: Any

  • Arepas: Cornmeal pancakes

  • Cachapas: Grilled pancakes made from fresh corn dough