Plurals in English
Learn how to form regular and irregular plural nouns. Master the rules for adding -s, -es, -ies, and the special exceptions.
What are Plurals?
In English, we use plural nouns to talk about more than one person, place, thing, or idea. Most nouns become plural by adding -s, but there are many rules and exceptions. Understanding plurals is essential for correct subject-verb agreement and clear communication.
Key idea: Singular = one | Plural = two or more
Regular Plurals
Most English nouns form the plural by adding -s or -es. Here are the main rules:
📘 Rule 1: Add -s
Most nouns → add -s
📘 Rule 2: Add -es
Nouns ending in -s, -ss, -sh, -ch, -x, -z, -o → add -es
📘 Rule 3: Change -y to -ies
Nouns ending in consonant + y → change y to -ies
📘 Rule 4: Add -s (vowel + y)
Nouns ending in vowel + y → just add -s
📘 Rule 5: Nouns ending in -f / -fe
Some nouns ending in -f or -fe change to -ves
⚠️ Exception: roof → roofs, chief → chiefs, safe → safes
Irregular Plurals
Some nouns have irregular plural forms that do not follow the standard rules. These must be memorized.
🔄 Complete Change
🔁 Same Form (No Change)
🔤 Latin & Greek Plurals
📚 More Latin/Greek Plurals
Uncountable Nouns (No Plural Form)
Some nouns cannot be counted and do not have a plural form. They are always singular.
💧 Liquids
water, milk, coffee, tea, oil, juice
🍞 Food
bread, rice, sugar, salt, cheese, meat
📚 Abstract Concepts
information, advice, knowledge, love, happiness
🏠 Materials
wood, metal, glass, paper, plastic
🌍 Subjects & Languages
English, mathematics, physics, history
💰 Others
money, equipment, furniture, luggage, weather
Note: To express quantity with uncountable nouns, use: a piece of, a glass of, a cup of, a kilo of
Examples in Sentences
📖 Regular Plurals in Sentences:
- I have two cars.
- She bought three dresses.
- There are many cities in this country.
- The children are playing in the garden.
🌟 Irregular Plurals in Sentences:
- The women are doctors.
- I saw five mice in the kitchen.
- My feet hurt after walking.
- There are many people at the concert.
🚫 Uncountable Nouns (Always Singular):
- I need some information. (not informations)
- She gave me good advice. (not advices)
- Can I have a glass of water? (not waters)
- We bought new furniture. (not furnitures)
Complete Irregular Plurals List
| Singular | Plural | Singular | Plural |
|---|---|---|---|
| man | men | woman | women |
| child | children | person | people |
| tooth | teeth | foot | feet |
| goose | geese | mouse | mice |
| ox | oxen | louse | lice |
| sheep | sheep | fish | fish |
| deer | deer | species | species |
| cactus | cacti | focus | foci |
| fungus | fungi | alumnus | alumni |
| criterion | criteria | phenomenon | phenomena |
| analysis | analyses | thesis | theses |
| crisis | crises | hypothesis | hypotheses |
Common Mistakes to Avoid
❌ Incorrect:
"I have two childs."
✅ Correct:
"I have two children."
❌ Incorrect:
"She bought three dress."
✅ Correct:
"She bought three dresses."
❌ Incorrect:
"There are many mans."
✅ Correct:
"There are many men."
❌ Incorrect:
"I need informations."
✅ Correct:
"I need information." (uncountable)
Interactive Exercises
Practice what you've learned. Choose the correct plural form.
Summary
add -s
cat → cats
add -es
box → boxes
change to -ies
baby → babies
memorize
man → men