Spanish Preterite Tense: Orthographic Changes and Irregular Verbs

Orthographic Changes in Preterite Tense

  • There are three standard orthographic changes in Spanish verbs in the preterite tense. These changes only affect the YO form.

Verbs Ending in -car

  • The letter 'c' changes to 'qu' before 'e' to maintain the hard 'c' sound.
  • Example: practicar (to practice) -> yo practiqué (I practiced)
  • Other examples:
    • buscar (to search/find) -> yo busqué
    • sacar (to take out/take a photo) -> yo saqué
    • tocar (to touch/play an instrument) -> yo toqué

Verbs Ending in -gar

  • The letter 'g' changes to 'gu' before 'e' to maintain the hard 'g' sound.
  • Example: jugar (to play a game) -> yo jugué (I played)
  • Other examples:
    • llegar (to arrive) -> yo llegué
    • regar (to water a plant) -> yo regué
    • pagar (to pay for) -> yo pagué

Verbs Ending in -zar

  • The letter 'z' changes to 'c' before 'e' because 'z' never precedes 'e' in Spanish.
  • Example: empezar (to start/begin) -> yo empecé (I started)
  • Other examples:
    • comenzar (to start/begin) -> yo comencé
    • organizar (to organize) -> yo organicé
    • almorzar (to eat lunch) -> yo almorcé

Conjugating Regular Verbs in the Preterite Past Tense

  • The preterite tense (simple past) is used for finished actions completed at a specific moment in the past.
  • To conjugate, remove the -ar/-er/-ir ending from the infinitive and add the preterite endings.

Regular -ar Verbs (Preterite Endings)

  • -é
  • -aste
  • -ó
  • -amos
  • -asteis
  • -aron

Regular -er and -ir Verbs (Preterite Endings)

  • -í
  • -iste
  • -ió
  • -imos
  • -isteis
  • -ieron
  • Note: -ER and -IR verbs share the same endings in the preterite.
  • The nosotros form is identical to the present tense for -AR and -IR verbs, thus the context helps determine the verb tense.
  • Reflexive pronouns (me, te, se, nos, os, se) are used with preterite endings to indicate past completed actions.
  • Examples of reflexive verbs:
    • levantarse (to get oneself up): yo me levanté, tú te levantaste, él/ella/usted se levantó, nosotros nos levantamos, vosotros os levantasteis, ellos/ellas/ustedes se levantaron
    • despertarse (to wake oneself up): yo me desperté, tú te despertaste, él/ella/usted se despertó, nosotros nos despertamos, vosotros os despertasteis, ellos/ellas/ustedes se despertaron
    • dormirse (to fall asleep): yo me dormí, tú te dormiste, él/ella/usted se durmió, nosotros nos dormimos, vosotros os dormisteis, ellos/ellas/ustedes se durmieron
    • vestirse (to get dressed): yo me vestí, tú te vestiste, él/ella/usted se vistió, nosotros nos vestimos, vosotros os vestisteis, ellos/ellas/ustedes se vistieron
    • divertirse (to have fun): yo me divertí, tú te divertiste, él/ella/usted se divirtió, nosotros nos divertimos, vosotros os divertisteis, ellos/ellas/ustedes se divirtieron

Stem-Changing Verbs in the Preterite Tense

  • If a stem-changing verb in the present tense is used in the preterite, it does not stem-change unless it is an -IR verb.

Non -IR Verbs

  • Verbs like DESPERTARSE (e > ie) and VOLVER (o > ue) do NOT stem-change in the preterite.
  • volver (to go back): yo volví, tú volviste, él/ella/usted volvió, nosotros volvimos, vosotros volvisteis, ellos/ellas/ustedes volvieron

-IR Verbs

  • If an (o > ue) stem-changing -IR verb is used in the present tense, the stem changes (o > u) in the preterite tense in the third-person forms only (él, ella, usted, ellos, ellas, ustedes).

  • This change is referred to as a "sandal" (instead of a boot).

    • dormirse (to fall asleep): él/ella/usted se durmió, ellos/ellas/ustedes se durmieron
    • dormir (to sleep): él/ella/usted durmió, ellos/ellas/ustedes durmieron

  • Sentences Examples:

    • Yo me dormí a las nueve y dormí por ocho horas = I fell asleep at 9:00 and slept for eight hours.
    • Él se durmió a las nueve y durmió por ocho horas = He fell asleep at 9:00 and slept for eight hours.

  • If an (e > i) or (e > ie) stem-changing -IR verb is used in the present tense, the stem changes (e > i) in the preterite tense in the third-person forms only.

    • vestirse (to get dressed): él/ella/usted se vistió, ellos/ellas/ustedes se vistieron
    • divertirse (to have fun): él/ella/usted se divirtió, ellos/ellas/ustedes se divirtieron

Irregular Verbs

  • leer (to read): yo leí, tú leíste, él/ella/usted leyó, nosotros leímos, vosotros leísteis, ellos/ellas/ustedes leyeron
  • The yo-form of leer follows regular spelling rules, while tú, nosotros, and vosotros forms have a diacritic mark (´) on the 'i'.
  • In the third-person forms, -ió and -ieron become -yó and -yeron respectively.
  • The I switches to a Y in the third person of -ER and -IR verbs to avoid a triple vowel combination where the last vowel carries the stress.
  • Example: construir (to construct/build) -> construí, construiste, construyó, construimos, construisteis, construyeron
  • The best way to deal with these orthographic/spelling changes is to remember THAT they are irregular, rather than WHY.