Articles a/an

1. The meaning of "a" or "an" is the same and is used to indicate something or someone in the singular. We never use them for references to more than one thing.

2. "A" is used with names that begin with consonant.

2.1. example

2.1.1. a book (un libro) a pen (un boligrafo)

3. "An" is used with names that begin with a vowel.

3.1. example

3.1.1. an animal (un animal) an ice cream (un helado)

4. We use "a" before the words beginning with the letters "u" or "eu"