Irregular Plural Nouns Worksheet Set 3 - Practice changing singular nouns to their correct plural forms in context.

Let’s go through each sentence one by one. We need to change the word in parentheses to its correct irregular plural form — because these nouns don’t just add “-s” or “-es”. Some change completely!

---

1. The two family live under one roof.
→ “Family” becomes families (change -y to -ies).
✔ *The two families live under one roof.*

2. These shelf are very easy to put together.
→ “Shelf” becomes shelves (add -ves).
✔ *These shelves are very easy to put together.*

3. The horse was Flocking deer stood immobile among the trees.
Wait — this sentence seems off. Let’s read it again:
“The horse was Flocking ___ (deer) stood immobile...”
That doesn’t make sense. Maybe it’s a typo? Probably meant:
“The flock of ___ (deer) stood immobile...”
But even then, “deer” is already plural! It doesn’t change.
So: deer → still deer
✔ *The flock of deer stood immobile among the trees.*
*(Note: If the original says “Flocking”, maybe it’s “flock of” — we’ll assume that.)*

4. The horse was Flicking fly away with its tail.
→ “Fly” (the insect) becomes flies.
✔ *The horse was flicking flies away with its tail.*

5. Joe Montana was one of the great Football hero of his day.
→ “Hero” becomes heroes (add -es after o).
✔ *Joe Montana was one of the great football heroes of his day.*

6. Mothers are gentle with their baby.
→ “Baby” becomes babies (change -y to -ies).
✔ *Mothers are gentle with their babies.*

7. A group of old men sat playing domino.
→ “Domino” becomes dominoes (add -es).
✔ *A group of old men sat playing dominoes.*

8. Ferns, mosses, and fungus produce spores.
→ “Fungus” becomes fungi (Latin plural — changes completely!).
✔ *Ferns, mosses, and fungi produce spores.*

9. The subway was covered in graffiti.
→ “Graffiti” is already plural! The singular is “graffito”, but we almost never use that. So leave as graffiti.
✔ *The subway was covered in graffiti.*

10. Taylor’s hair was crawling with louse.
→ “Louse” becomes lice (changes completely!).
✔ *Taylor’s hair was crawling with lice.*

11. The woman danced and the men clapped.
→ “Woman” becomes women (changes vowel sound).
✔ *The women danced and the men clapped.*

12. Maple leaf hum red in the autumn.
→ “Leaf” becomes leaves (add -ves).
✔ *Maple leaves hummed red in the autumn.*
*(Also fixed “hum” to “hummed” for grammar — but focus is on plural.)*

13. Some husbands and wife are always disputing.
→ “Wife” becomes wives (change -fe to -ves).
✔ *Some husbands and wives are always disputing.*

14. Mountain gorillas are an endangered species.
→ “Species” is the same in singular and plural! So no change.
✔ *Mountain gorillas are an endangered species.*

15. The tomato give extra flavor to the sauce.
→ “Tomato” becomes tomatoes (add -es).
Also, verb should be “gives” if singular, but since we’re making it plural:
✔ *The tomatoes give extra flavor to the sauce.*

16. The young child likes to listen to Fairy story.
→ “Story” becomes stories (change -y to -ies).
✔ *The young child likes to listen to fairy stories.*

17. Our math teacher likes giving pop quiz.
→ “Quiz” becomes quizzes (double z + es).
✔ *Our math teacher likes giving pop quizzes.*

---

Final Answer:

1. families
2. shelves
3. deer
4. flies
5. heroes
6. babies
7. dominoes
8. fungi
9. graffiti
10. lice
11. women
12. leaves
13. wives
14. species
15. tomatoes
16. stories
17. quizzes