Plurals Rules

Plurals 

1. When a word ends with S, ch, sh, x, or z:

add – es

buses boxes

crashes buzzes

churches gases

2. When a word ends with f or fe:

add – s

cliffs

change f to v and add – es

shelf shelves

knife knives

3. When a word ends with consonant + o

add – es

zeroes

tomatoes

4. When a word ends with consonant + y:

change y to i

add -es

baby babies

family families

When a word ends with a vowel + y

add – s

monkey monkeys

When a word ends with us (Latin origin):

change us to i

syllabus syllabi

fungus fungi