Starting the presentation
Why you are giving this presentation
Stating the main points
Introducing the first point
Showing graphics, transparencies, slides etc.
Moving on to the next point
Giving more details
Changing to a different topic
Referring to something which is off the topic
Referring back to an earlier point
Summarizing or repeating the main points
The purpose of this presentation is ...
I'd like to expand on this aspect/problem/point
Let me go back to what I said earlier about ...
Now let's move on to ...
Let's start/begin with ...
I'd like to digress here for a moment and just mention that ...
I'd like to illustrate this by showing you...
The main points I will be talking about are
I'd like to recap the main points of my presentation
I'd like to turn to something completely different
The topic of my presentation today is ...
