Grammar worksheet focusing on possessive nouns, instructing students to rewrite phrases using apostrophes and possessive forms.

Let's solve Exercise 4: Possessive Nouns by rewriting each phrase using an apostrophe and a possessive noun, just like the example:

> Example: *dresses for girls* → *girls’ dresses*

We will convert each phrase into a possessive form by identifying who or what "owns" or is associated with the noun.

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Solutions:

1. the lair of the wolf
→ the wolf’s lair

2. the nest of the wasps
→ the wasps’ nest

3. ladders for the firemen
→ the firemen’s ladders

4. uniforms for the army
→ the army’s uniforms

5. the paw belonging to the monkey
→ the monkey’s paw

6. the uncle of Patrick
→ Patrick’s uncle

7. the horse of the cowboy
→ the cowboy’s horse

8. the home where the children live
→ the children’s home

9. the cage where the lions are
→ the lions’ cage

10. the present Amy received
→ Amy’s present

11. the city where Jesse lives
→ Jesse’s city

12. the penpal to whom Marla writes
→ Marla’s penpal

13. orders given by the chief
→ the chief’s orders

14. the end of the day
→ the day’s end

15. the flags of the countries
→ the countries’ flags

16. the circle where the winner goes
→ the winner’s circle

17. the thrill of victory
→ victory’s thrill

18. the surface of the wall
→ the wall’s surface

19. graveyards of the elephants
→ the elephants’ graveyards

20. the skin of the tomato
→ the tomato’s skin

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✔ Explanation of Key Rules:

- Singular nouns: Add 's (e.g., *the wolf’s lair*, *Amy’s present*)
- Plural nouns ending in -s: Add only ’ (e.g., *the wasps’ nest*, *the children’s home*)
- Plural nouns not ending in -s: Add 's (e.g., *the men’s ladders* – though here it's "firemen", which ends in -n, so we use *firemen’s*)
- Possession can be shown even when it's implied (e.g., *the end of the day* = *the day’s end*)

This exercise helps clarify how possessive nouns show ownership or association without using “of” or prepositional phrases.

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✔ Final Answer:
```
1. the wolf’s lair
2. the wasps’ nest
3. the firemen’s ladders
4. the army’s uniforms
5. the monkey’s paw
6. Patrick’s uncle
7. the cowboy’s horse
8. the children’s home
9. the lions’ cage
10. Amy’s present
11. Jesse’s city
12. Marla’s penpal
13. the chief’s orders
14. the day’s end
15. the countries’ flags
16. the winner’s circle
17. victory’s thrill
18. the wall’s surface
19. the elephants’ graveyards
20. the tomato’s skin
```