Types of irregular plural nouns: Rules & Quiz

Types of irregular plural nouns

There are many types of irregular plural, but these are the most common:

Noun type Forming the plural Example
Ends with -fe Change f to v
then
Add -s
knife–┬áknives
life–lives
wife–wives
Ends with -f Change f to v
then
Add -es
half–halves
wolf–wolves
loaf–loaves
Ends with -o Add -es potato–potatoes
tomato–tomatoes
volcano–volcanoes
ends with -us Change -us to -i cactus–cacti
nucleus–nuclei
focus–foci
ends with -is Change -is to -es analysis–analyses
crisis–crises
thesis–theses
ends with -on Change -on to -a phenomenon–phenomena
criterion–criteria
ALL KINDS Change the vowel
or
Change the word
or
Add a different ending
man–men
foot–feet
child–children
person–people
tooth–teeth
mouse–mice
Unchanging Singular and plural
are the same
sheep
deer
fish (sometimes)

For Each Noun provide the plural form:

1. foot
2. wolf
3. yourself
4. person
5. analysis
6. goose
7. echo
8. fish
9. octopus
10. thief
Tagged with: ,
Posted in Nouns, Online English

Leave a Reply

Your email address will not be published. Required fields are marked *

*

You may use these HTML tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <strike> <strong>