The rules for the indefinite article – “a” – are simpler than the ones for the definite article [“the”].
Masculine nouns:
Most masculine nouns use un for “a”.
un libro – a book
un amico – a [male] friend
If the masculine noun begins with gn, ps, z or s plus another consonant, we use uno for “a”.
uno zio
Feminine nouns
Feminine nouns beginning with a consonant use una.
una signora – a woman
Feminine nouns which begin with a vowel use un’.
un’amica – a [female] friend
Now see if you can put the right form of “a” in front of these nouns:
______ giorno
______ ragazza
______ ora
______ pizza
______ università
______ zaino
______ mostro
______ zio
______ albergo
______ gnomo [yes, it means a gnome!]
