Why don't you begin by telling us exactly what happened, and then perhaps I will.
Perhaps we should begin by your telling me how far you've gone with the other side.
"Please begin by telling me in your own words what happened on the fatal day."
A man who begins by telling you about himself usually goes on doing so.
Then begin by telling this person about your positive feelings toward them.
Now I will begin our friendship by telling you the truth.
Steven began by telling us to walk in the water.
Let me begin by telling you what the Commission has been doing.
Stephen was thinking if she ought to begin by telling her name.
Let me begin by telling you that this is your lucky day.