Printable English grammar worksheet focusing on adding possessive apostrophes, designed for educational use.

The task is to add the missing apostrophes in the sentences to indicate possession. Apostrophes are used to show that something belongs to someone or something. Here's the corrected version of each sentence with explanations:

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Corrected Sentences:

1. Toms new shoes were red and shiny.
- Correction: Tom's new shoes were red and shiny.
- Explanation: The shoes belong to Tom, so we need an apostrophe before the "s" to indicate possession.

2. Mary liked Amys cute puppy.
- Correction: Mary liked Amy's cute puppy.
- Explanation: The puppy belongs to Amy, so we need an apostrophe before the "s" to indicate possession.

3. We went to Johns house on the weekend.
- Correction: We went to John's house on the weekend.
- Explanation: The house belongs to John, so we need an apostrophe before the "s" to indicate possession.

4. Her new friends house was massive.
- Correction: Her new friend's house was massive.
- Explanation: The house belongs to her new friend (singular), so we need an apostrophe before the "s" to indicate possession.

5. Janes dad was angry at the drawing on the wall.
- Correction: Jane's dad was angry at the drawing on the wall.
- Explanation: The dad belongs to Jane, so we need an apostrophe before the "s" to indicate possession.

6. Jerry knew his dads new car was expensive.
- Correction: Jerry knew his dad's new car was expensive.
- Explanation: The car belongs to Jerry's dad, so we need an apostrophe before the "s" to indicate possession.

7. The little monkeys tail got caught in a tree.
- Correction: The little monkey's tail got caught in a tree.
- Explanation: The tail belongs to the little monkey (singular), so we need an apostrophe before the "s" to indicate possession.

8. The cats collar was bright pink.
- Correction: The cat's collar was bright pink.
- Explanation: The collar belongs to the cat (singular), so we need an apostrophe before the "s" to indicate possession.

9. Marys health was getting worse by the day.
- Correction: Mary's health was getting worse by the day.
- Explanation: The health belongs to Mary, so we need an apostrophe before the "s" to indicate possession.

10. The tigers family left him.
- Correction: The tiger's family left him.
- Explanation: The family belongs to the tiger (singular), so we need an apostrophe before the "s" to indicate possession.

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Final Answer:

1. Tom's new shoes were red and shiny.
2. Mary liked Amy's cute puppy.
3. We went to John's house on the weekend.
4. Her new friend's house was massive.
5. Jane's dad was angry at the drawing on the wall.
6. Jerry knew his dad's new car was expensive.
7. The little monkey's tail got caught in a tree.
8. The cat's collar was bright pink.
9. Mary's health was getting worse by the day.
10. The tiger's family left him.

Boxed Final Answer:
\boxed{
\begin{aligned}
1. & \text{ Tom's new shoes were red and shiny.} \\
2. & \text{ Mary liked Amy's cute puppy.} \\
3. & \text{ We went to John's house on the weekend.} \\
4. & \text{ Her new friend's house was massive.} \\
5. & \text{ Jane's dad was angry at the drawing on the wall.} \\
6. & \text{ Jerry knew his dad's new car was expensive.} \\
7. & \text{ The little monkey's tail got caught in a tree.} \\
8. & \text{ The cat's collar was bright pink.} \\
9. & \text{ Mary's health was getting worse by the day.} \\
10. & \text{ The tiger's family left him.}
\end{aligned}
}