Respuestas
Respuesta:
1 To make regular nouns plural, add ‑s to the end.
cat – cats
house – houses
2 If the singular noun ends in ‑s, -ss, -sh, -ch, -x, or -z, add ‑es to the end to make it plural.
truss – trusses
bus – buses
marsh – marshes
lunch – lunches
tax – taxes
blitz – blitzes
3 In some cases, singular nouns ending in -s or -z, require that you double the -s or -z prior to adding the -es for pluralization.
fez – fezzes
gas –gasses
4 If the noun ends with ‑f or ‑fe, the f is often changed to ‑ve before adding the -s to form the plural version.
wife – wives
wolf – wolves
Exceptions:
roof – roofs
belief – beliefs
chef – chefs
chief – chiefs
5 If a singular noun ends in ‑y and the letter before the -y is a consonant, change the ending to ‑ies to make the noun plural.
city – cities
puppy – puppies
6 If the singular noun ends in -y and the letter before the -y is a vowel, simply add an -s to make it plural.
ray – rays
boy – boys
7 If the singular noun ends in ‑o, add ‑es to make it plural.
potato – potatoes
tomato – tomatoes
Exceptions:
photo – photos
piano – pianos
halo – halos
With the unique word volcano, you can apply the standard pluralization for words that end in -o or not. It’s your choice! Both of the following are correct:
volcanoes
volcanos
8 If the singular noun ends in ‑us, the plural ending is frequently ‑i.
cactus – cacti
focus – foci
9 If the singular noun ends in ‑is the plural ending is ‑es.
analysis – analyses
ellipsis – ellipses
10 If the singular noun ends in ‑on, the plural ending is ‑a.
phenomenon – phenomena
criterion – criteria
11 Some nouns don’t change at all when they’re pluralized.
sheep – sheep
series – series
species – species
deer –deer
Explicación:
There are Irregular Nouns which are written in a different way:
Child - Children
Man - Men
Woman - Women
Person - People
Tooth - Teeth