⌛ Spanish Past Tenses: Preterite vs Imperfect
Know when to use each past tense and never confuse them again
When to Use Which
Spanish has two simple past tenses that English merges into one. The preterite (pretérito indefinido) describes completed, one-time actions — things that happened and are done. The imperfect (pretérito imperfecto) describes ongoing, habitual, or background actions in the past — things that "used to happen" or "were happening." Think of the preterite as a camera snapshot (a single finished moment) and the imperfect as a video clip (an ongoing scene).
| Preterite (What happened) | Imperfect (What was happening) |
|---|---|
| Comí una manzana. (I ate an apple.) | Comía una manzana cada día. (I ate/used to eat an apple every day.) |
| Llamé a mi madre. (I called my mom.) | Llamaba a mi madre todos los domingos. (I used to call my mom every Sunday.) |
| Llovió ayer. (It rained yesterday.) | Llovía mucho en esa ciudad. (It rained a lot in that city.) |
| Fui al parque. (I went to the park.) | Iba al parque de niño. (I used to go to the park as a kid.) |
Preterite Conjugation
Regular preterite verbs follow predictable patterns for each of the three verb families. Note that -er and -ir verbs share identical preterite endings.
| -ar (hablar) | -er (comer) | -ir (vivir) | |
|---|---|---|---|
| yo | hablé | comí | viví |
| tú | hablaste | comiste | viviste |
| él/ella/usted | habló | comió | vivió |
| nosotros | hablamos | comimos | vivimos |
| ellos/ellas/ustedes | hablaron | comieron | vivieron |
Preterite Irregular Verbs
Several of the most common Spanish verbs are irregular in the preterite. Ser (to be) and ir (to go) share completely identical forms — context always makes the meaning clear.
| ser / ir | hacer | tener | estar | decir | |
|---|---|---|---|---|---|
| yo | fui | hice | tuve | estuve | dije |
| tú | fuiste | hiciste | tuviste | estuviste | dijiste |
| él/ella/usted | fue | hizo | tuvo | estuvo | dijo |
| nosotros | fuimos | hicimos | tuvimos | estuvimos | dijimos |
| ellos/ellas/ustedes | fueron | hicieron | tuvieron | estuvieron | dijeron |
Imperfect Conjugation
The imperfect is one of the easiest tenses to learn because it has only THREE irregular verbs. Regular -ar verbs use -aba endings, while -er and -ir verbs share -ía endings.
| -ar (hablar) | -er (comer) | -ir (vivir) | |
|---|---|---|---|
| yo | hablaba | comía | vivía |
| tú | hablabas | comías | vivías |
| él/ella/usted | hablaba | comía | vivía |
| nosotros | hablábamos | comíamos | vivíamos |
| ellos/ellas/ustedes | hablaban | comían | vivían |
Imperfect Irregular Verbs
Only three verbs are irregular in the imperfect — ser, ir, and ver. Every other verb in the entire language is regular in this tense.
| ser (to be) | ir (to go) | ver (to see) | |
|---|---|---|---|
| yo | era | iba | veía |
| tú | eras | ibas | veías |
| él/ella/usted | era | iba | veía |
| nosotros | éramos | íbamos | veíamos |
| ellos/ellas/ustedes | eran | iban | veían |
Using Both Together
In real storytelling, you constantly switch between both tenses. The imperfect sets the scene (background, ongoing actions), and the preterite advances the plot (specific events that interrupt or change things). This is called the "interrupted action" pattern: an ongoing action (imperfect) gets interrupted by a sudden event (preterite).
Time Markers
Certain words and phrases tend to signal which tense to use. These are not absolute rules — context always matters — but they are strong hints.
| Usually Preterite | Usually Imperfect |
|---|---|
| ayer (yesterday) | siempre (always) |
| anoche (last night) | todos los días (every day) |
| el año pasado (last year) | mientras (while) |
| una vez (once / one time) | cuando era niño (when I was a child) |
| de repente (suddenly) | generalmente (generally) |
| el lunes pasado (last Monday) | a menudo (often) |
| en ese momento (at that moment) | cada verano (every summer) |
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