2. Nouns – singular and plural
How to form the plural form of a Spanish noun depends on its ending. There are several different endings:
Nouns ending in a vowel get the ending -s.
EXAMPLES:
perro – perros
escuela – escuelas
Nouns ending in a consonant have the ending -es.
EXAMPLES:
español – españoles
doctor – doctores
Nouns ending in -z have it changed into c when the plural -es is added.
EXAMPLES:
cruz – cruces
voz – voces
Nouns ending in -ión or -és lose the accent when the plural -es is added.
EXAMPLES:
acción – acciones
francés – franceses
In some nouns, mostly compound, only the article changes: el lunes – los lunes, el paraguas – los paraguas, el rascacielos – los rascacielos.
perros