Plural of Nouns — Regular and Irregular Forms — English — 2nd Year Middle School — Algerian Curriculum

Plural of Nouns — Regular and Irregular Forms — English — 2nd Year Middle School — Algerian Curriculum

Lesson Objectives

• To understand the difference between singular and plural nouns
• To learn the rules for forming regular plurals
• To recognize and use common irregular plural forms

1. What are Plural Nouns?

A singular noun refers to one person, place, thing, or idea. A plural noun refers to more than one. In English, most nouns form their plural by adding -s or -es, but there are many irregular forms too.

Singular	Plural
book	books
cat	cats
pen	pens

2. Regular Plural Rules

Rule	Singular	Plural
Most nouns: add -s	book, car, dog, girl	books, cars, dogs, girls
Nouns ending in -s, -ss, -sh, -ch, -x, -o: add -es	bus, glass, dish, watch, box, potato	buses, glasses, dishes, watches, boxes, potatoes
Nouns ending in consonant + -y: change -y to -ies	baby, city, lady, story	babies, cities, ladies, stories
Nouns ending in -f or -fe: change to -ves	wolf, life, knife, shelf	wolves, lives, knives, shelves

3. Irregular Plurals

Some nouns do not follow the regular rules. They change their form completely or stay the same.

Singular	Plural	Notes
man	men	Vowel change
woman	women	Vowel change
child	children	Different form
person	people	Different form
tooth	teeth	Vowel change
foot	feet	Vowel change
mouse	mice	Vowel change
sheep	sheep	Same form
fish	fish	Same form
deer	deer	Same form

4. Special Cases: Nouns that are Always Plural

• trousers, jeans, glasses, scissors, clothes — These are always used in plural form.
• Example: My trousers are new. (Not “is new”)

5. Solved Examples

1. Example 1: Write the plural form of “baby”.

   Solution: baby → babies (consonant + y → change y to ies)

2. Example 2: Write the plural form of “child”.

   Solution: child → children (irregular)

3. Example 3: Complete: There are five ______ (box) on the table.

   Solution: boxes (ending in x → add es)

4. Example 4: Complete: I saw two ______ (sheep) in the field.

   Solution: sheep (same form in plural)

6. Practice Exercises

1. Write the plural form of these nouns:
   • class → ______
   • lady → ______
   • knife → ______
   • man → ______
   • tomato → ______
2. Complete the sentences with the correct plural form:
   • There are three ______ (bus) at the station.
   • My ______ (foot) hurt after the long walk.
   • The ______ (child) are playing in the park.
   • She bought two ______ (dress) for the party.
3. Correct the mistakes:
   • I have two childs. → ______
   • The sheeps are eating grass. → ______
   • She has three baby. → ______

7. Summary

To form plurals in English:

• Most nouns: add -s
• Nouns ending in s, ss, sh, ch, x, o: add -es
• Nouns ending in consonant + y: change -y to -ies
• Nouns ending in -f or -fe: change to -ves
• Some nouns are irregular (man/men, child/children, etc.)
• Some nouns stay the same (sheep, fish, deer)

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