It's all to do with where you are as soon as the ball is released. As soon as the ball is released from the passing player, there's gotta be at least 2 opposing players in front of the player receiving the ball. It doesn't matter where you are when you receive the ball. In other words you can run past 1 or more of the opponents and receive the ball, with maybe only the goalie to beat. The main point is that you need to have 2 or more opponents in front of you at the time that the ball leaves the foot or head (or whatever part of the body) of the person that's passing the ball.
Jeez this thread is getting complicated already, I was hoping that this was gonna be easy, but now I'm thinking otherwise
Btw - my missus is sat here laughing shouting, "I get it, I get it !!"