Grammar exercise where students rewrite phrases using possessive nouns, such as changing 'the toys of the child' to 'the child's toys'.

Let's solve this worksheet step by step. The task is to convert each phrase into the correct possessive noun form. Possessive nouns show ownership or a relationship, and they are usually formed by adding an apostrophe and sometimes an "s" to the noun.

Rules for Possessive Nouns:

1. Singular nouns: Add 's
- Example: *the dog’s house* → "dog" is singular → add 's

2. Plural nouns ending in -s: Add only '
- Example: *the girls’ room* → "girls" is plural → add '

3. Plural nouns not ending in -s: Add 's
- Example: *children’s toys* → "children" ends in -en → add 's

4. Irregular plurals: Treat like singular (add 's)
- Example: *men’s clothes*, *women’s hats*

5. Compound nouns: Add 's to the last word
- Example: *my brother’s teacher* → "brother" is singular → add 's

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Now, let’s go through each sentence:

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1. The house of the dog
→ The dog’s house
*(Singular noun → add 's)*

2. The toys of the child
→ The child’s toys
*(Singular noun → add 's)*

3. The house of my friend
→ My friend’s house
*(Singular noun → add 's)*

4. The nest of the birds
→ The birds’ nest
*(Plural noun ending in -s → add only ’)*

5. The eggs of the hen
→ The hen’s eggs
*(Singular noun → add 's)*

6. The room of the girls
→ The girls’ room
*(Plural noun ending in -s → add only ’)*

7. The bike of my cousin
→ My cousin’s bike
*(Singular noun → add 's)*

8. The teachers of my brothers
→ My brothers’ teachers
*(Plural noun ending in -s → add only ’)*

9. The neck of the swan
→ The swan’s neck
*(Singular noun → add 's)*

10. The legs of the kangaroos
→ The kangaroos’ legs
*(Plural noun ending in -s → add only ’)*

11. The hands of my mother
→ My mother’s hands
*(Singular noun → add 's)*

12. The arms of the octopus
→ The octopus’s arms
*(Singular noun, even though it ends in -us → add 's)*
> Note: For words ending in -us (like octopus), we often use octopus’s (though some style guides accept "octopus’"). In most educational contexts, octopus’s is acceptable.

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✔ Final Answers:

1. The dog’s house
2. The child’s toys
3. My friend’s house
4. The birds’ nest
5. The hen’s eggs
6. The girls’ room
7. My cousin’s bike
8. My brothers’ teachers
9. The swan’s neck
10. The kangaroos’ legs
11. My mother’s hands
12. The octopus’s arms

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✔ These are all correct possessive forms based on standard English grammar rules.