Articles in Phrases of Presentations

I’m Alex. I’ve worked as (a)   sales rep in AIG for ten years.

I’d like to begin with (a)   brief personal introduction.

For (a)   first part of my presentation, I’ll give the background to the invention.

And in (a)   last stage I will talk about future developments.

If you have any questions, I’ll be happy to answer them at (a)   end.

In (a)   second part of my presentation, I’ll describe how innovative it is.

As (a)   few of you already know, I’m Alex Case

Did you know that over (a)   hundred people every minute…?

Hi everyone. Let’s make (a)   start, shall we?

If there are no further questions, I will bring my presentation to (a)   close.