Apostrophe - PORTALLAS - Free Printable

Let's solve this apostrophe worksheet step by step, based on the rule provided:

> Rule:
> - Use 's (apostrophe before the s) for singular nouns.
> - Use s' (apostrophe after the s) for plural nouns.

We need to fix each sentence by placing the apostrophe correctly in the highlighted words.

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✔ Corrected Sentences with Explanation:

1. My brothers pencils were in my sisters pencil case.
→ My brothers’ pencils were in my sisters’ pencil case.
- "brothers" and "sisters" are plural → use s' after the s.

2. I have lots of teachers. All my teachers lessons are fun.
→ All my teachers’ lessons are fun.
- "teachers" is plural → use s'.

3. I live near a castle. That castles tower is very tall.
→ That castle’s tower is very tall.
- "castle" is singular → use ’s before the s.

4. Saturns rings are beautiful but Mars atmosphere is thin.
→ Saturn’s rings are beautiful but Mars’ atmosphere is thin.
- "Saturn" is singular → ’s
- "Mars" is singular (name of planet), so ’s
*(Note: Planets are treated as singular, so "Mars’" is correct)*

5. There were many girls. The girls dresses were pretty.
→ The girls’ dresses were pretty.
- "girls" is plural → use s'

6. Mr. Wilsons lives next door. Mr. Wilsons house is huge.
→ Mr. Wilson’s lives next door. Mr. Wilson’s house is huge.
- "Wilson" is singular → use ’s
- Note: "Mr. Wilson’s" shows possession (the house belongs to Mr. Wilson).

7. A birds wings help them fly. That birds colour is blue.
→ A bird’s wings help them fly. That bird’s colour is blue.
- "bird" is singular → use ’s

8. The cars bumpers were touching each other.
→ The cars’ bumpers were touching each other.
- "cars" is plural → use s'

9. The ten rivers names were difficult to spell.
→ The ten rivers’ names were difficult to spell.
- "rivers" is plural → use s'

10. That is Johns brothers red car. Johns car is blue.
→ That is John’s brother’s red car. John’s car is blue.
- "John" is singular → ’s
- "brother" is singular → ’s
- So it's John’s brother’s (double possessive)

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✔ Final Corrected Version:

> My brothers’ pencils were in my sisters’ pencil case.
> I have lots of teachers. All my teachers’ lessons are fun.
> I live near a castle. That castle’s tower is very tall.
> Saturn’s rings are beautiful but Mars’ atmosphere is thin.
> There were many girls. The girls’ dresses were pretty.
> Mr. Wilson’s lives next door. Mr. Wilson’s house is huge.
> A bird’s wings help them fly. That bird’s colour is blue.
> The cars’ bumpers were touching each other.
> The ten rivers’ names were difficult to spell.
> That is John’s brother’s red car. John’s car is blue.

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🔍 Summary of Rules Applied:

| Word Type | Example | Apostrophe Rule |
|----------|--------|----------------|
| Singular noun | John’s, dog’s, castle’s | 's (before the s) |
| Plural noun | teachers’, girls’, cars’ | s' (after the s) |
| Possessive of a person | John’s brother’s | Both singular possessives |

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🎯 Score: 10/10 (All corrected!)

✔ This worksheet teaches correct apostrophe usage for possessive nouns, emphasizing whether the noun is singular or plural.

Let me know if you'd like a printable version or explanation for kids!