The person I admire

How do plural nouns work?
To make a regular noun plural, you add –s or –es to the end, depending on the word’s ending. Sometimes, letters of the original word get changed to make the plural form, such as half and its plural form, halves. We explain which words get which suffixes in the next section. 
Irregular plural nouns are an exception. Each irregular plural noun has its own unique plural form, such as mouse and its plural, mice, or goose and its plural, geese. 
Most nouns can be turned into plural nouns, including collective nouns that represent groups. 
one team
two teams
However, mass nouns, also known as uncountable nouns or non-count nouns, like sand, don’t have plural forms, even when they represent multiple things. 
Plural noun rules
There are many plural noun rules, and because we use nouns so frequently when writing, it’s important to know all of them! The correct spelling of plurals usually depends on what letter the singular noun ends in.

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.
   

bus – buses
truss – trusses
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.
   

class – classes
fez – fezzes

4. 
   If the noun ends with –f or –fe, the f or –fe are 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