Plural nouns

###What does it mean to make a noun plural?

You form a plural noun when you add an ending or change the noun to show that there is more than one of it.

When you eat one blueberry pancake, pancake is singular. But when you eat 36 blueberry pancakes, you have the plural form of pancakes—and a stomach ache.

###Forming regular plural nouns

Regular plural nouns follow predictable rules when you change them from singular (one) to plural (more than one). To create regular plural nouns, you just add -s, -es, or -ies to the end of the word.

Singular | Plural | Rule

• | - | - | -
  experiment | experiments | Add -s to most nouns
  fox | foxes | Add -es to nouns ending in s, x, z, ch, or sh
  policy | policies | When y follows a consonant, change y to i and add -es
  essay | essays | When y follows a vowel, add -s
  video | videos | When o follows a vowel, add -s
  volcano | volcanoes | When o follows a consonant, add -s or -es, depending on the word

###Forming irregular plural nouns

Irregular plural nouns don't follow the same rules. You have to memorize these special plurals because the nouns change in unexpected ways or don't change at all. Here are a few of the most common types of irregular plural nouns:

####Plural nouns formed by changing f or fe to ves

Singular | Plural

• | - | -
  knife | knives
  half | halves
  leaf | leaves

Note that not all nouns that end in f or fe follow this pattern! For example, the plural of roof is roofs.

####Plural nouns formed by adding -en to the end of a word

Singular | Plural

• | - | -
  child | children
  ox | oxen

####Plural nouns formed by changing a vowel sound

Only seven words in English follow this pattern.

Singular | Plural

• | - | -
  tooth | teeth
  goose | geese
  foot | feet
  woman | women
  man | men
  mouse | mice
  louse | lice

####Plural nouns that are the same as the singular form

Singular | Plural

• | - | -
  sheep | sheep
  deer | deer
  moose | moose

[[☃ explanation 1]]

###Common mistakes

Mistake #1: Adding -s to irregular plurals

❌ Incorrect: My art class created a sculpture that was over 12 foots tall.

✅ Correct: My art class created a sculpture that was over 12 feet tall.

❌ Incorrect: During the 1800s, American pioneers used oxes to pull covered wagons.

✅ Correct: During the 1800s, American pioneers used oxen to pull covered wagons.

Irregular plural nouns don't follow the regular -s or -es pattern. You can't just add -s to words like foot, ox, or tooth. These words have plural forms that you need to memorize.

Mistake #2: Adding -s or -es to nouns that don't change in the plural

❌ Incorrect: Most mooses are excellent swimmers and can hold their breath underwater for about 30 seconds while they eat plants.

✅ Correct: Most moose are excellent swimmers and can hold their breath underwater for about 30 seconds while they eat plants.

Remember that some irregular plural nouns stay exactly the same in both their singular and plural forms. Words like moose, chalk, and jeans never add -s.

Mistake #3: Forgetting the spelling rule for words ending in a consonant + y

❌ Incorrect: Some countrys have more sheep than people.

✅ Correct: Some countries have more sheep than people.

When a word ends in a consonant plus y (like country, city, or story), change the y to i and add -es to form the plural. If the word ends in a vowel plus y (like valley or day), just add -s.

###Remember!

Regular plurals follow patterns you can learn, like adding -s or -es. Irregular plurals break the rules and must be memorized.