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Foreign Languages: Spanish Preterite vs Imperfect
Two Ways to Talk About the Past
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Spanish has two main past tenses that often translate to the English simple past: the preterite and the imperfect. The preterite presents an action as completed, like a finished dot on a timeline. The imperfect presents an action as ongoing, repeated, or descriptive, like a background scene on a timeline. Choosing the right tense helps listeners understand whether you mean a completed event or the setting around it.
The preterite is commonly used for actions with a clear beginning or end, sequences of events, and one-time completed actions. The imperfect is commonly used for habits, age, time, weather, emotions, descriptions, and actions in progress. Many Spanish stories use both tenses together: the imperfect sets the scene, and the preterite moves the plot forward. A useful example is Caminaba por el parque cuando vi a mi amigo, meaning I was walking in the park when I saw my friend.
Key Facts
- Preterite shows completed past actions: Ayer estudié para el examen.
- Imperfect shows ongoing or repeated past actions: De niño, estudiaba mucho.
- Preterite endings for regular -ar verbs include -é, -aste, -ó, -amos, -aron.
- Imperfect endings for regular -ar verbs include -aba, -abas, -aba, -ábamos, -aban.
- Preterite endings for regular -er and -ir verbs include -í, -iste, -ió, -imos, -ieron.
- Imperfect endings for regular -er and -ir verbs include -ía, -ías, -ía, -íamos, -ían.
Vocabulary
- Preterite
- A Spanish past tense used for completed actions, finished events, and actions that move a story forward.
- Imperfect
- A Spanish past tense used for ongoing actions, repeated habits, background details, and descriptions in the past.
- Completed action
- An action viewed as finished at a specific point or within a finished time period.
- Background action
- An action or condition that describes what was happening around the main event.
- Habitual action
- An action that happened repeatedly in the past, often expressed in English with used to or would.
Common Mistakes to Avoid
- Using the preterite for every English past tense is wrong because English I ate can mean one completed event, while I used to eat requires the imperfect in Spanish.
- Using the imperfect for a completed sequence is wrong because actions like llegué, saludé, and comí move the story forward as finished events.
- Ignoring time expressions is wrong because words like ayer and anoche often point to the preterite, while siempre, de niño, and todos los veranos often point to the imperfect.
- Treating ser, ir, and ver like normal imperfect verbs is wrong because their imperfect forms are irregular or special: era, iba, and veía.
Practice Questions
- 1 Conjugate these 6 verbs in the preterite for the subject yo: hablar, comer, vivir, estudiar, beber, escribir.
- 2 Choose preterite or imperfect for each of these 5 sentences and conjugate the verb: Ayer yo ___ al cine (ir). Cuando era niño, yo ___ mucho (leer). A las ocho ___ frío (hacer). De repente, ella ___ la puerta (abrir). Todos los sábados nosotros ___ fútbol (jugar).
- 3 Explain why the sentence Mientras caminaba, vi un perro uses imperfect for caminaba and preterite for vi.