Hey kiddo! Remember when we talked about nouns? Those are the words we use to name things, people, places or ideas. Sometimes, we want to show that something belongs to someone or something. That's when we use the 'possessive case'. Let me explain!
Imagine that you have a toy, like a teddy bear. It belongs to you, right? So, we say 'this is MY teddy bear'. When we add 'my' to 'teddy bear', it becomes possessive, and it means that the teddy bear belongs to you.
We can do the same thing with other nouns too. For example, if a girl named Sarah has a bike, she could say 'This is SARAH'S bike'. The word 'Sarah's' shows that the bike belongs to Sarah.
To make a noun possessive, we usually add an apostrophe and an 's' at the end of the word. If the word already ends in 's', we just add an apostrophe after it. For example, 'James' car' shows that the car belongs to James.
That's the possessive case, my dear! It's a way to show that something belongs to someone or something else.