Plural of Nouns in English

Hello, dear English learners! Welcome to a new grammar lesson from My Lingua Academy. Plural of Nouns in English

Today, we will look at how to form plurals in English — one of the first grammar topics every learner meets, yet still full of little exceptions and surprises. By the end of this lesson, you’ll know how to form regular and irregular plurals, when not to add -s, and how to handle tricky cases like children, sheep, and data.

Regular Plural Nouns

Most English nouns form the plural by simply adding -s.

Singular Plural
cat cats
dog dogs
car cars
student students
book books

Examples:

  • I have two cats and a dog.
  • The students are studying for their exams.

Plurals Ending in -es

Add -es to nouns ending in -s, -ss, -sh, -ch, -x, or -z.

Singular Plural
bus buses
brush brushes
box boxes
church churches
quiz quizzes

Examples:

  • The buses are always crowded in the morning.
  • She bought three new brushes.

Nouns Ending in -y

If a noun ends in a consonant + y, change y → i and add -es.

If a noun ends in a vowel + y, just add -s.

Singular Plural
baby babies
city cities
boy boys
key keys

Examples:

  • The babies are sleeping.
  • There are many beautiful cities in Italy.

Nouns Ending in -f or -fe

Some nouns ending in -f or -fe change the ending to -ves.

Singular Plural
leaf leaves
knife knives
wife wives
shelf shelves

…but not all! Some just take -s:

Singular Plural
roof roofs
belief beliefs
cliff cliffs

Examples:

  • The knives are in the drawer.
  • The roofs were damaged by the storm.

Irregular Plurals

Some nouns don’t follow the normal pattern. You simply have to memorise them.

Singular Plural
man men
woman women
child children
tooth teeth
foot feet
mouse mice
person people
goose geese

Examples:

  • The children are playing in the park.
  • I saw several geese near the lake.

Same Singular and Plural Form

Some nouns stay the same in singular and plural.

Singular Plural
sheep sheep
deer deer
fish fish (sometimes fishes when referring to different species)
species species
aircraft aircraft

Examples:

  • The sheep are grazing in the field.
  • There are many fish in this pond.

Plurals of Compound Nouns

Usually, the main word becomes plural.

Singular Plural
mother-in-law mothers-in-law
passer-by passers-by
editor-in-chief editors-in-chief

Examples:

  • All my mothers-in-law get along surprisingly well!
  • The editors-in-chief met for a conference.

Foreign Plurals in English

English has borrowed many words from Latin, Greek, and French, and sometimes we keep their original plurals.

Singular Plural
cactus cacti/cactuses
focus foci/focuses
phenomenon phenomena
criterion criteria
syllabus syllabi/syllabuses

Examples:

  • The scientist observed several fascinating phenomena.
  • There are many criteria for choosing the right school.

Uncountable Nouns (No Plural Form)

Some nouns do not have a plural form because they refer to things we cannot count individually.

Uncountable Nouns

advice, information, furniture, homework, money, news, knowledge, traffic, luggage, equipment

Examples:

  • I have some good advice for you. (Not: advices)
  • The news is interesting today. (Not: are interesting)

Special Cases and Tricky Examples

Singular Plural Notes
datum data often used as plural in academic English
medium media “the media” = press and TV
means means same in singular and plural
series series same in both forms
index indexes/indices both are correct, depending on context

Examples:

  • This series is really popular.
  • Modern media influence our lives in many ways.

Summary

Most nouns add -s or -es.

Nouns ending in -y → -ies (after consonants).

Nouns ending in -f/-fe → -ves (in many cases).

Learn the irregular plurals and uncountable nouns by heart.

Watch out for foreign plurals and compound nouns.

Do the quiz to perfect your knowledge:

Read similar posts:

Countable and uncountable nouns in English

Nouns that are only singular

Nouns that are only plural

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My Lingua Academy is an online school of English language. We give one-on-one lessons to students of English of all ages and all levels of knowledge all around the world. With us you can prepare for written assignments and exams, attend a general or business English course, or have conversation classes with qualified English teachers who have years of experience.

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