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Indefinite Articles in Spanish – Lesson 13

Level A1· 4 min read·Updated Oct 2026
Lesson 13 of 2007% through the free course
In this lesson

(Lesson summary)

How to say a, an and some in Spanish: un, una, unos, unas. Learn when to use each one, and how they compare to el, la, los, las.

  • Refresher: el, la, los, las
  • Un, una, unos, unas
  • The vs a: when to use which
  • Un vs uno
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(The full lesson)

Quick refresher: el, la, los, las

This lesson builds directly on lesson 6, so let’s quickly refresh. In English there’s only one word for “the”. In Spanish there are four:

SingularPlural
Masculineel coche (the car)los coches (the cars)
Femininela casa (the house)las casas (the houses)

These are the definite articles: you use them for a specific thing. Today we learn the indefinite articles: how to say “a”, “an” and “some”.

It’s an important lesson, so watch it when you’re fresh and focused, and keep your notebook close!

Un, una, unos, unas: a, an and some

Just like el and la, the Spanish word for “a” depends on whether the noun is masculine or feminine, and whether it’s singular or plural.

SingularPlural
Masculineununos
Feminineunaunas

Masculine: un and unos

Coche (car) is masculine. “The car” is el coche. To say “a car”, el becomes un:

el coche the car

un coche a car

And in the plural, unos means “some” or “a few”:

los coches the cars

unos coches some cars / a few cars

Feminine: una and unas

Casa (house) is feminine. It’s almost the same as un, but because it’s feminine, we add an -a: una.

la casa the house

una casa a house

And in the plural, unas:

las casas the houses

unas casas some houses / a few houses

All 8 articles side by side

The (definite)A / some (indefinite)
Masculine singularel cocheun coche
Masculine plurallos cochesunos coches
Feminine singularla casauna casa
Feminine plurallas casasunas casas

Honestly, it’s not that bad: 4 new words, and they follow the same logic as el, la, los and las. And everything you learned in lesson 6 still works: the -o and -a rules, and a mixed group uses the masculine form (unos niños = some boys, or some children).

(Wes’s tip)

When you make flashcards for new nouns, write them with el or la (la casa, el coche). Then you automatically know whether to use una or un too.

Good to know: un vs uno

In lesson 12 you learned that 1 is uno. When you count, you say uno. But right in front of a masculine noun, it becomes un. That’s why un coche can mean both “a car” and “one car”.

Recap: indefinite articles

SpanishEnglish
un cochea car (masculine, singular)
unos cochessome cars (masculine, plural)
una casaa house (feminine, singular)
unas casassome houses (feminine, plural)
un hombrea man

+ 3 more words & phrases

Get all 8 words & phrases on one printable page, with examples and my tips. Free, straight to your inbox.

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Practice: el, la, los, las or un, una, unos, unas?

Look at the English to see which one you need. Say it out loud, then click to check.

1. a man (hombre)

un hombre

2. the woman (mujer)

la mujer

3. some men (hombres)

unos hombres

4. a woman (mujer)

una mujer

5. the men (hombres)

los hombres

6. some women (mujeres)

unas mujeres

7. a book (libro)

un libro: libro ends in -o, so masculine.

8. some songs (canciones)

unas canciones: canción ends in -ción, so feminine.

Quiz: un, una, unos, unas

10 questions to see if you’ve got it!

Frequently asked questions

When do I use un/una and when el/la?

Just like in English: use el / la (“the”) for a specific thing you both know about, and un / una (“a”) for any one thing, or something you mention for the first time. Quiero un café = I want a coffee (any coffee). Quiero el café = I want the coffee (that specific one).

Is unos the same as “some”?

Pretty much. Unos amigos = some friends, a few friends. With numbers it can also mean “about”: unos diez euros = about ten euros.

Before you go to the next lesson

That’s it! Four new words: un, una, unos, unas. Practice them together with el, la, los and las until you can switch between them without thinking. Grab the free reference sheet below. Next up is another yellow lesson: a new verb! ¡Adiós!

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(Written by)

Wes

Hi! I'm Wes, a Dutchie 🇳🇱 who has been living in Spain 🇪🇸 for the past few years. Just like you, I had to learn Spanish from scratch, and I searched countless places for the right info.

After filling two notebooks with words, grammar rules and notes, I figured all of this could help other learners too. That's why I created this website: to help you learn Spanish in an easy and effective way, one step at a time.

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