plural

Forming the Plural of Nouns in English

In English, most nouns form their plural by adding -s to the singular. However, there are several spelling rules and irregular forms you need to learn. Below is a clear guide:

1. Regular plurals: add -s
Most nouns simply take -s.
Examples: book → books, car → cars, window → windows.

2. Add -es for certain endings
Add -es when the noun ends in: -s, -ss, -sh, -ch, -x, -z.
Examples: bus → buses, kiss → kisses, brush → brushes, watch → watches, box → boxes.

3. Nouns ending in consonant + -y
Change -y to -ies.
Examples: city → cities, baby → babies.
If the noun ends in a vowel + y, just add -s: key → keys, boy → boys.

4. Nouns ending in -f or -fe
Many change to -ves: leaf → leaves, wife → wives.
But some simply add -s: roof → roofs, belief → beliefs.

5. Irregular plural nouns
Some nouns change completely:

• man → men
• woman → women
• child → children
• foot → feet
• tooth → teeth
• mouse → mice

6. Nouns with the same singular and plural
Some nouns do not change form:
Examples: sheep → sheep, fish → fish (often unchanged), deer → deer.

7. Foreign-origin plurals
Some nouns keep their original plural form:
Examples: criterion → criteria, phenomenon → phenomena, analysis → analyses.

Summary: Most English plurals are regular, but many common nouns are irregular. It’s important to practice and memorize the exceptions.