I'll start by ...
The of this presentation is to...
Feel free to me if you have any questions.
A good of this is...
First of all, I'll some background details.
Then I'll look at...
To with, I'll review...
We've looked at...
Hello. Thank you for giving me this to...
I'll make sure we have time for questions at the end.
Today I talk to you about...
move on to...