Say this at the beginning of a sentence when you're showing people a document, a chart, a photograph, etc. to an audience. You use "As you can see,..." to point out something that you want them to look at:
As you can see, the numbers for this quarter are still looking pretty good.
As you can see, we had a ton of people come out for the opening night.
Use this expression in meetings, in presentations, when you're teaching a class, and so on.