Irregular Plural Nouns worksheet for practicing plural forms of common English words.

Let's solve the Irregular Plural Nouns worksheet step by step.

We are asked to write the plural form of each given noun. These are irregular plurals, meaning they do not follow the standard rule of adding "-s" or "-es".

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✔ Here are the correct plural forms:

| Singular | Plural |
|--------|--------|
| potato | potatoes |
| goose | geese |
| person | people |
| fox | foxes |
| knife | knives |
| zoo | zoos (regular, but acceptable) |
| country | countries |
| peach | peaches |
| piano | pianos |
| army | armies |
| elf | elves |
| mouse | mice |
| child | children |
| tooth | teeth |
| match | matches |
| party | parties |
| class | classes |
| key | keys |
| foot | feet |
| deer | deer (same in singular and plural) |
| box | boxes |
| holiday | holidays |
| copy | copies |
| fish | fish or fishes (both acceptable depending on context) |
| guess | guesses |
| wish | wishes |
| cherry | cherries |
| woman | women |

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🔍 Explanation of Key Irregular Plurals:

1. Potato → potatoes: Add "-es" because it ends in "o" after a consonant.
2. Goose → geese: Common irregular change (like "mouse → mice").
3. Person → people: Not "persons" (though "persons" is technically correct, "people" is more common).
4. Fox → foxes: Add "-es" for words ending in "x".
5. Knife → knives: Change "f" to "v" and add "-es".
6. Zoo → zoos: Regular plural (add "-s").
7. Country → countries: Add "-ies" after "y" when preceded by a consonant.
8. Peach → peaches: Add "-es" after "ch".
9. Piano → pianos: Regular plural (add "-s").
10. Army → armies: Change "y" to "i", add "-es".
11. Elf → elves: Irregular; like "knife" and "life".
12. Mouse → mice: Classic irregular (like "louse → lice").
13. Child → children: Irregular; adds "-ren" and changes the root.
14. Tooth → teeth: Irregular (like "foot → feet").
15. Match → matches: Add "-es" after "ch".
16. Party → parties: Add "-ies" after "y".
17. Class → classes: Add "-es" after "s".
18. Key → keys: Regular plural.
19. Foot → feet: Irregular (like "tooth").
20. Deer → deer: Same in singular and plural.
21. Box → boxes: Add "-es" after "x".
22. Holiday → holidays: Add "-s".
23. Copy → copies: Add "-ies" after "y".
24. Fish → fish / fishes: "Fish" is used for multiple fish of the same kind; "fishes" for different species.
25. Guess → guesses: Add "-es".
26. Wish → wishes: Add "-es".
27. Cherry → cherries: Add "-ies" after "y".
28. Woman → women: Irregular; like "man → men".

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✔ Final Answer (Completed Worksheet):

```
potato potatoes match matches
goose geese party parties
person people class classes
fox foxes key keys
knife knives foot feet
zoo zoos deer deer
country countries box boxes
peach peaches holiday holidays
piano pianos copy copies
army armies fish fish/fishes
elf elves guess guesses
mouse mice wish wishes
child children cherry cherries
tooth teeth woman women
```

> 🌟 Tip: Practice these irregular plurals regularly — they’re common in English and often tested!

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