Here are 10 sentences expressing possession in English:
1. This is my phone.
2. The book belongs to Sarah.
3. Is that your car?
4. Our dog loves to play fetch.
5. His house is very spacious.
6. The necklace is hers.
7. I borrowed his pen.
8. Their garden is full of beautiful flowers.
9. Whose backpack is this?
10. The keys are in my pocket.
I hope these examples help! Let me know if you have any other questions.