Irregular Plural Nouns - Worksheets - Academy Worksheets - Free Printable

Of course! Let's solve the worksheet step by step, following the rules for forming plural nouns shown in the chart.

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Part 1: Write the plural forms of these nouns

We’ll use the chart to determine which rule applies to each noun.

#### Left Column:

- box → ends in *x* → Rule: add es → boxes
- library → ends in consonant + *y* → Rule: change *y* to *i* and add es → libraries
- tax → ends in *x* → Rule: add es → taxes
- class → ends in *ss* → Rule: add es → classes
- patch → ends in *ch* → Rule: add es → patches
- echo → ends in *o* → Rule: add es → echoes

#### Right Column:

- loaf → ends in *f* → Rule: change *f* to *v* and add es → loaves
- bus → ends in *s* → Rule: add es → buses
- worry → ends in consonant + *y* → Rule: change *y* to *i* and add es → worries
- dictionary → ends in consonant + *y* → Rule: change *y* to *i* and add es → dictionaries
- pile → ends in *e* (but not *f/fe*, not *y*, not *s/ss/ch/sh/x/z/o*) → Regular noun → add s → piles
- flash → ends in *sh* → Rule: add es → flashes

✔ Answers for Part 1:

| Singular | Plural |
|----------|------------|
| box | boxes |
| library | libraries |
| tax | taxes |
| class | classes |
| patch | patches |
| echo | echoes |
| loaf | loaves |
| bus | buses |
| worry | worries |
| dictionary | dictionaries |
| pile | piles |
| flash | flashes |

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Part 2: Write the correct plural form of the noun in parentheses

We need to apply the same rules based on context. Since the sentences describe multiple things, we use the plural form.

1. During the Ice Age many _________ (variety) of __________ (animal) lived in Europe.

- “many” indicates plural.
- variety → ends in *y* after consonant → varieties
- animal → regular noun → animals

✔ Answer: varieties, animals

2. _________ (Wolf), __________ (bear), and wild __________ (horse) roamed the continent.

- These are all subjects — likely plural since they’re listed together as groups roaming.
- Wolf → ends in *f* → wolves
- Bear → regular noun → bears
- Horse → regular noun → horses

✔ Answer: Wolves, bears, horses

3. These Ice Age ____________ (mammal) were hunted with stone __________ (ax), ____________ (knife), and ____________ (spear).

- “These” and “were” indicate plural.
- mammal → regular noun → mammals
- ax → ends in *x* → axes (Note: “axe” is also acceptable spelling, but “ax” plural is “axes”)
- knife → ends in *fe* → change *f* to *v* and add es → knives
- spear → regular noun → spears

✔ Answer: mammals, axes, knives, spears

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🧠 Final Answers Summary:

#### Part 1: Plural Forms

- box → boxes
- library → libraries
- tax → taxes
- class → classes
- patch → patches
- echo → echoes
- loaf → loaves
- bus → buses
- worry → worries
- dictionary → dictionaries
- pile → piles
- flash → flashes

#### Part 2: Fill in the blanks

1. varieties, animals
2. Wolves, bears, horses
3. mammals, axes, knives, spears

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