So, that concludes [subject/title of the section] . . .
Now let’s move on to . . . / Now let’s take a look at . . .
Let’s begin/start by looking at . . .
To begin/start with, let’s look at . . .
Moving on to the next section, let’s take a look at . . .
Good morning and welcome to [name of company, name of conference hall, hotel, etc].
In today’s presentation I want to look at / explain . . .
For those of you who don’t know me, my name is . . .
Good morning/afternoon. I hope you all had a pleasant journey here today.
That brings my presentation to an end. Thank you for your attention.
Let’s begin by looking at [topic] . . .
I’m here to explain . . .
The purpose of today’s presentation is to . . .
I’d like to thank you (all) for your attention and for coming today.
Good morning/afternoon. Thank you all very much for coming today.
My name is Mark Watson and I am responsible for . . .
Let me introduce myself; my name is Mark Watson and I am responsible for . . .
Thank you for your attention.