Look at these examples from a talk about a festival. The highlighted expressions are used by a guide to give her talk a structure.
I want to tell you about one of the local island festivals.
Let me start by saying that this is probably one of the most exciting festivals on the island.
What happens is this ...
You’re probably wondering about food and drink.
Now, moving on to the climax of the festival.
Another interesting thing is that the winners take their banners ...
So, as you can see, it’s well worth visiting.
OK. Let’s move on.