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Spanish past tenses: Preterit and Imperfect

Both, Spanish preterite (or preterit) and imperfect tenses are used to express past actions, but in English we have just one past tense. So, the English past form "I ate" could either be translated as "yo comí" (preterit) or "yo comía" (imperfect) depending on what we want to express (notice that they aren't interchangeable).

But how do we know when to use either the imperfect or the preterit tenses? In general terms, the preterit is used to express an action (in the past) that is completed or seen as completed, that has concrete and clear beginning and end. So, we use the other tense, the imperfect, as its name shows, when referring to actions that haven't got a clear or concise end.

We could also understand the preterit as a tense that give us specific information on when the action took place. On the other hand, the imperfect informs us generally about the end of the action.

Ok, let's go further; these are some 'tips' to help us with the use of both Spanish past tenses:

Use the preterit:

  • to tell when something began or ended.

    La película comenzó a las siete y terminó a las ocho y media.
    (The film started at seven o'clock and ended at half past eight.)
  • There are some words and expressions, indicating concrete time frames, so they are used with the preterit: ayer (yesterday) antesdeayer (the day before yesterday), en ese momento (at that moment), entonces (then) la semana pasada (last week), el mes pasado (last month), esta tarde (this evening) esta mañana (this morning).

Use the imperfect:
  • if you want to talk about repeated actions (or actions made habitually):

    Ella comía arroz todos los días. (She aterice everyday)
    Mi tía siempre llegaba tarde (My aunt was always late)
  • if you want to talk about time or age in the past:

    Él tenía 20 años. (He was twenty years old)
    Era medianoche. (It was midnight)
This is a general view that can help you understand the main differences in use for these two Spanish tenses. In later lessons will specifically study these tenses, their uses and conjugations.

For any question or comment, feel free to e-mail me or just post a message at the forum.

¡Que tenga un buen día!
Angeles F.

Recommended material:
I write monthly articles for "Think Spanish" ("Piensa en español") since 2002. All "Think Spanish" articles are written in Spanish, and they include a Spanish/English glossary. You'll also have the option to buy this magazine including a CD. Nice way to learn about Spanish language and customs!

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