Consider the following pair of words.
The first word of each pair denotes one thing, the second word of each pair denotes more than one.
A Noun that denotes one person or thing is said to be in the Singular Number as boy, girl, cow, tree, book, etc.
A Noun that denotes more than one person or thing is said to be in the Plural Number as boys, girls, cows, trees, books.
There are two Numbers in English - Singular and the Plural.
How Plurals are formed
1. The Plural of Nouns is generally formed by adding -s to the singular as,
2. But Nouns ending in -s, -sh, -ch or -x form the plural by adding -es to the singular,
3. Most nouns ending in -o also form the plural by adding -es to the singular as,
4. A few nouns ending in -o, generally those which are in less common use merely add -s, as,
5. Nouns ending in -y preceded by a consonant, form their plural by changing -y into -i adding -es as,
6. Several nouns ending in -f or -fe form their plural by changing -f or -fe into v and adding -es as,
A few nouns form their plural by changing the inside vowel of the singular as
There are a few nouns that form their plural by adding -en to the singular as,
Ox, oxen, child, children.
Some nouns have the singular and the plural alike as,
I bought three dozen oranges.
Some people reach the age of three score and ten.
Some nouns are used only in the plural.
1. Names of instruments which have two parts forming a kind of pair as
Bellows, scissors, tongs, pincers, spectacles.
2. Names of certain articles of dress, as
Trousers, drawers, breeches.
3. Names of diseases as
4. Names of games as
Some nouns originally singular are now generally used in the plural as
Alms, riches, eaves.
The following plural forms can be used in singular as,
Mathematics, physics, mechanics, politics, news, innings.
Mathematics is his favorite study.
Certain Collective Nouns though singular in form, are always used as plurals, as
These poultry are mine.
Whose are these cattle?
There are few gentry in this town.
Note- As a Common Noun, 'people' means a nation and is used in both singular and plural as
1. The French are a hard-working and brave people.
2. There are many different peoples in Europe.
A Compound Noun generally forms its plural by adding -s to the principal word as,
Singular - Plural
Son-in-law - sons-in-law
Man-of-war - men-of-war
Step-son - step-sons
Maid-servant - maid-servants
Some nouns have different meaning in the singular and the plural.
Singular - Plural
Advice: counsel - Advices: information
Good: benefit - Goods: merchandise
Respect: regard - Respects: compliments
Force: strength - Forces: troops
Letters, figures and other symbols are made plural by adding an apostrophe and s as,
There are more e's than a's in this page.
Add two 5's and three 2's.
Abstract Nouns have no plural.
Hope, charity, love, kindness.
Names of substances or materials known as Material Nouns, are also not used in the plural.
Copper, Tin, Iron, wood.