The middle/main part
Saying what is coming
In this part of my presentation, I’d like to talk about …
So, let me first give you a brief overview.
Indicating the end of a section
This brings me to the end of my first point.
So much for point two.
So, that’s the background on …
That’s all I wanted to say about …
Summarizing a point
Before I move on, I’d like to recap the main points.
Let me briefly summarize the main issues.
I’d like to summarize what I’ve said so far …
Moving to the next point
This leads directly to my next point.
This brings us to the next question.
Let’s now move on / turn to …
After examining this point, let’s turn to …
Let’s now take a look at …