Moving on to the next point
This leads directly to the next part of my talk
3.This now leads us to my next point
4.let's move on to the next point
5.let's now turn to the next issue
Indicating the end of a section
This brings me to the end of my second point
6.So much for...
7.So that's the background
Referring back
As I mentioned before...
8.As I said earlier
Let's go back to what we were discussing earlier
9.Let's me now come back to what I said earlier
Summarizes a point
I'd like to sum up main points
Let's me briefly summarize I've so far