#Nouns: Formation of Plural Nouns

The plural forms of nouns can be formed in any of the following ways:

1. Addition of -s:
    Singular        Plural
     boy               boys
     girl                girls
     book            books
     pen              pens
     cup              cups
     chief           chiefs

2. Addition of -es:
    Singular      Plural 
      box             boxes 
      fox              foxes
      knife           knives 
      thief            thieves 

3. Addition of -ies
    Singular       Plural 
     baby            babies
     lady             ladies
     lorry            lorries
     fly                flies
     city              cities

4. Addition of -en
    Singular       Plural 
       ox               oxen
      child          children 

5. Some nouns change their vowels in the middle of the singular forms. 
Singular          Plural
foot                  feet
goose              geese
tooth                teeth
mouse             mice
man                 men
woman           women

6. There is the need to pay close attention to a small class of nouns and master them. 
Singular                   Plural 
medium                    media
auditorium               auditoria
stadium                    stadia/stadiums
criterion                    criteria 
datum                        data

7. However, some nouns do not change their forms, whether in the singular or plural forms. 

Singular         Plural 
cattle              cattle 
deer                deer
sheep             sheep
news              news

8. Never add s to any of the following nouns: 

furniture 
information 
advice
equipment
stationery 

8(ii).You may wish to know why. The reason is because they are collective nouns. If you want to use them in the plural forms, it is as follows:

items of furniture 
pieces of information 
pieces of advice
items of equipment 

It is also correct to say:
some furniture/information
not
some furnitures/informations

some advice/equipment/stationery
not
some advices/equipments/stationeries

9. That said, you will also need to pay attention to words that ends in s but are not to be considered as plural nouns.

news
debris
politics 
measles
economics 
mathematics 

For example: 

Economics  is my best subject. 
Fake news spreads like wild fire. 
Measles is a communicable disease. 

10. However, there are nouns that are only in the plural forms. They can be referred to as plural only nouns. Examples include the following:

shorts 
species
scissors 
trousers
knickers 
premises
belongings 
surroundings

For example:

His shorts are dirty. 
Your belongings have to be checked in. 

You can check out nouns that are always in the plural forms below.


Exercise

1. Secondary schools must be equipped with....... 
A. laboratory equipments 
B. some laboratory equipments
C. laboratory equipment 
D. many equipments

2. The........have been crying all day. 
A. baby
B. babies
C. babys
D. babies'

3. Politics........meant for all the citizens, not for a few. 
A. is
B. are
C. was
D. were

4. The criteria for admission into the university........made available on its website. 
A. has been
B. is been
C. was 
D. have been

5. While the plural form of boy is boys, the plural form of cattle is.......? 



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