Okay kiddo, so let me tell you about this special word called 'transitive'. Imagine you have three toys, let's call them A, B, and C. Now, if you say "I gave A to B", that means you did a 'transitive' action - you gave something to someone else.
Now, let's add another toy, D, into the mix. If you say "I gave A to B and B to C", that means you did two 'transitive' actions in a row. You gave something to someone, and then that person gave it to someone else.
So, 'transitivity' is a special grammatical category that talks about these kinds of actions where you're giving something to someone else. Some verbs, like 'give', are usually 'transitive' - they involve this kind of action. But other verbs, like 'sleep', don't involve giving anything to anyone, so they're not 'transitive'.
Transitivity is important in grammar because it affects how we use words and how we structure our sentences. So, next time you talk about giving toys to your friends, remember that you're doing something 'transitive' - you're giving something to someone else!