Section 1.3 · Mastering un, una, unos, and unas — how to say "a," "an," and "some" in Spanish
In this section, we cover indefinite articles. These are used when you are talking about non-specific items or a single unit of something. Just like definite articles, these must match the gender and number of the noun they describe.
Indefinite articles correspond to "a," "an," or "some" in English. In Spanish, these words provide immediate information about whether the object is masculine, feminine, singular, or plural.
| Article | Gender | Number | English Equivalent | Example |
|---|---|---|---|---|
| un | Masculine | Singular | "a" / "an" | un libro, un café, un amigo |
| una | Feminine | Singular | "a" / "an" | una mesa, una oficina, una amiga |
| unos | Masculine | Plural | "some" / "a few" | unos libros, unos amigos, unos días |
| unas | Feminine | Plural | "some" / "a few" | unas mesas, unas flores, unas llaves |
| — (no article) | Either | Singular | "a" (implied) | Soy médico. (profession, no adjective) |
Use un for masculine singular nouns and una for feminine singular nouns. These are used to identify one specific but non-particular person or thing. Think of them as the equivalent of "a" or "an" in English — they tell the listener that you are referring to any one of something, not a particular one they already know.
In English, we often use the word "some" or no word at all for plurals. In Spanish, you use unos for masculine plural nouns and unas for feminine plural nouns to indicate an approximate quantity. These forms communicate that you are referring to a small, unspecified number of items — not a precise count and not a specific, known set.
The plural forms unos and unas are very useful when you want to describe a small, indefinite group. This is common when discussing plans or items you need to acquire. In English you might say "some friends" or just "friends" — in Spanish, unos amigos or unas preguntas conveys that same informal, approximate sense of quantity.
In Spanish, when you state someone's profession directly after the verb "to be," you usually do not use an article. However, if you add an adjective to describe that person, you must use un or una. For example: Soy médico. (no article) but Usted es un médico muy dedicado. (adjective present → article required).
Because the word for "a" is the same as the word for the number "one" (uno), the indefinite article carries a sense of quantity. Note that the number uno drops the -o before a masculine noun to become un. This shortening is called apocope and only applies before masculine singular nouns: un minuto (one minute), but uno de los minutos (one of the minutes).
Study each phrase as a complete unit. Notice how the article changes with gender (masculine/feminine) and number (singular/plural).
| Spanish Phrase | English Translation | Article | Practical Context |
|---|---|---|---|
| Un amigo | A friend (m) | un Singular | Referring to a non-specific male friend. |
| Una amiga | A friend (f) | una Singular | Referring to a non-specific female friend. |
| Unos papeles | Some papers | unos Plural | General documents or sheets of paper. |
| Unas llaves | Some keys | unas Plural | A set of keys for a house or car. |
| Un regalo | A gift | un Singular | Something given during a celebration. |
| Una sorpresa | A surprise | una Singular | An unexpected event or item. |
Listen to each sentence in Spanish, then repeat it aloud during the countdown pause.
Each sentence below uses indefinite articles from this lesson in a natural, everyday context. As you listen, identify the article — un, una, unos, or unas — and ask yourself: is the noun masculine or feminine? Singular or plural? Is it a specific item (definite) or any item (indefinite)?
Step 1 — Listen: The Spanish sentence plays automatically. Pay close attention to the article before each noun — notice whether it's un, una, unos, or unas.
Step 2 — Repeat: During the 4-second countdown, say the sentence aloud — match the speaker's rhythm and intonation as closely as possible.
Step 3 — Adjust: Use the Speed and Volume sliders to find your ideal practice pace.
Compare with Section 1.2: After each sentence, ask yourself: could I replace the indefinite article with a definite article? How would the meaning change? (un libro → el libro)
Watch for professions: In sentences with es un doctor / es una arquitecta, notice how the adjective triggers the article.
Repeat daily: Even 10 minutes of focused shadowing practice produces measurable gains in pronunciation fluency and grammatical automaticity.
Choose the correct answer to complete each question. 20 questions drawn randomly from a pool of 25.