Spanish Past Tenses: Imperfect vs Indefinite Explained

One of the biggest challenges for students who learn Spanish online is understanding the Spanish past tenses. The two most important are the imperfect and the indefinite (preterite).

Both describe past actions, but they express different ideas. In this guide, you’ll learn when to use imperfect vs indefinite in Spanish, with clear rules, examples, and practice — so you can talk about the past naturally and confidently.

Past Tenses in Spanish: The Big Picture

Spanish has several ways to talk about the past, but in everyday conversation you mainly use:

Pretérito Imperfecto → background, habits, descriptions
Pretérito Indefinido (Preterite) → completed, specific actions

Think of storytelling:

Imperfect = what was happening
Indefinite = what happened

Once you see this difference, choosing the right tense becomes much easier.

What Is the Imperfect Tense in Spanish?

The pretérito imperfecto describes past actions without focusing on when they started or finished. It sets the scene, gives context, and expresses repeated past habits.

Imperfect Conjugation

-AR verbs: hablaba, hablabas, hablaba, hablábamos, hablabais, hablaban
-ER / -IR verbs: comía, comías, comía, comíamos, comíais, comían

Only three irregular verbs:

ser → era, eras, era, éramos, erais, eran
ir → iba, ibas, iba, íbamos, ibais, iban
ver → veía, veías, veía, veíamos, veíais, veían

When to Use the Imperfect in Spanish

Use the imperfect for:

1. Past habits

De pequeño, jugaba en el parque.

2. Actions in progress in the past

Yo estudiaba cuando me llamaste.

3. Descriptions

La casa era grande y tenía un jardín.

👉 Imperfect = background.

What Is the Indefinite (Preterite) Tense in Spanish?

The pretérito indefinido is used for actions that are finished and happened at a specific moment in the past.

Indefinite Conjugation (Regular Forms)

-AR verbs: hablé, hablaste, habló, hablamos, hablasteis, hablaron
-ER / -IR verbs: comí, comiste, comió, comimos, comisteis, comieron

When to Use the Indefinite in Spanish

Use the indefinite for:

1. Completed actions

Ayer comí paella.

2. Story sequences

Me levanté, me vestí y salí.

3. Interrupting actions

Yo dormía cuando el teléfono sonó.

👉 Indefinite = action.

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The school was founded and is run by enthusiastic teachers. Out team was teaching Spanish around the world for a few years and when we come back to Spain, we decided to start our own school.

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Imperfect vs Indefinite: Quick Comparison

Function	Imperfect	Indefinite
Background / description	✅	❌
Habitual past actions	✅	❌
Completed specific actions	❌	✅
Story progression	❌	✅

Spanish Past Tenses Chart (Simple Visual Guide)

🎬 Like a film scene:

Imperfect → what was happening
Indefinite → what happened

Example:

Cuando llegué, ellos ya habían salido.
(Indefinite = completed action)

Cuando llegué, ellos salían de casa.
(Imperfect = action in progress)

This simple contrast is the key to mastering past tenses in Spanish.

Spanish Past Tenses Practice

Complete with the correct tense:

Cuando era niño, __________ (jugar) en la calle todos los días.
Ayer __________ (ver) una película.
Yo __________ (estudiar) cuando me llamaste.
Me __________ (despertar), me vestí y salí.
La casa __________ (ser) muy antigua.

Scroll down for the answers — but try them on your own first!

Common Mistakes

❌ Ayer veía una película.
✔ Ayer vi una película.

❌ Siempre fui tímida de pequeña.
✔ Siempre era tímida de pequeña.

Final Takeaway

Imperfect → habits, background, descriptions
Indefinite → finished, specific actions

Mastering these two Spanish past tenses will immediately improve your speaking and writing.

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If you want to finally understand past tenses in Spanish without confusion, join our online courses and start speaking from day one.

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✅ Answers to the Practice Section

jugaba
vi
estudiaba
desperté
era

Who wrote this post?

Small school,
big learning.

We are CactusBCN Languages, a Spanish language school located in Barcelona.

In March 2020, the pandemic situation encouraged us to start teaching online. All our students were happy with this change so we will keep teaching online for a while 🙂

The school was founded and is run by enthusiastic teachers. Our team was teaching Spanish around the world for a few years and when we came back to Spain, we decided to start our own school.

It is a small local business. We work with small groups because we like to get to know all our students and design personalized lessons.

We are looking forward to meeting you in class!

Why should I take an online Spanish course?

Online classes are as fun as face-to-face classes but with the added benefits of online learning: