1. Nouns ending in "s", "x", "ch", "sh", or "z":
* bus - buses
* box - boxes
* church - churches
* dish - dishes
* quiz - quizzes
2. Nouns ending in a consonant + "y":
* baby - babies
* city - cities
* fly - flies
* story - stories
Exceptions:
* If the noun ends in a vowel + "y", you simply add an "s". (e.g., boy - boys, monkey - monkeys)
* Some nouns ending in "y" have irregular plurals. (e.g. fly - flies, but lady - ladies)
3. Some nouns have irregular plural forms:
* child - children
* foot - feet
* goose - geese
* man - men
* woman - women
Important Note: While these are the general rules, there are exceptions and unusual cases. It's always helpful to consult a dictionary if you are unsure about the plural form of a particular noun.