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 (note that gases is also an acceptable, and more commonly used, spelling of this plural noun)
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
Hopefully I helped :)
