Nouns which do not adopt a distinct plural form
Nouns with a final unstressedsyllable ending in -s, and those which end
in -xdo not change in the plural:
la crisis las crisis crisis/crises
el virus los virus virus/viruses
el fax los fax fax/faxes
2.1.4.1
(^1111) 2.1.4
2 3 4 5 6 7 8 9
1011
1
12111
3 4 5 6 7 8 9
20111
1 2 3 4 5 6 7 8 9
30111
1 2 3 4 5 6 7 8 9
40
41111
Plural forms
of nouns
15
Spelling changes as a result of forming plurals(see also 1.3.2)
1 Nouns which end in -zchange this to -cbefore the plural ending
-es: voz > voces‘voice/s’ (see Table 1.1).
2 Nouns ending in -nor -swhich have a written accent in the final
syllable, will no longer require the written accent after adding
-es: avión > aviones ‘plane/s’, huracán > huracanes‘hurricane/s’,
botellín > botellines‘small bottle/s’, andén > andenes
‘platform/s, pavement/s, sidewalk/s’, inglés > ingleses
‘Englishman/English people’.
3 Nouns containing combined vowels of which one is íor ú,retain
the accent after adding -es: raíz> raíces‘root/s’, baúl> baúles
‘trunk/s’.
4 Nouns which end in -enwill require a written accent to maintain
the correct stress in the plural: imagen >imágenes‘image/s’,
resumen> resúmenes‘résumé/s’, dictamen> dictámenes
‘report/s’.
5 The following words have irregular plurals in that the stressed
vowel (underlined) changes: carácter> caracteres‘character/s’,
régimen> regímenes‘regime/s, diet/s’, espécimen> especímenes
‘specimen/s’.