If someone is "before" you, then someone is "in front of you".
example: They spoke before a live audience. = The audience was in front of them, and they were facing the audience.
example: The radio show was recorded before a live audience. = The radio show was recorded in front of a live audience.
If a person is in front of you, then you are "after" that person. And that person is in front of you. That same person is before you.
example: A guy with a blue hat was standing in line at the supermarket. A woman with a red hat was standing behind him. The cashier said to the woman with the red hat, "Can I help you?" The woman with the red hat said, "No, this gentelman with the blue hat is before me." The gentleman with the blue hat told the woman with the red hat that she could go in front of him even though he was before her in line.
before = in front of
after = behind
They couldn't believe what they saw right before their very eyes. It was a gigantic bird.
The gigantic bird was "right in front of them", which means the gigantic bird was "right before their very eyes".
The gigantic bird stood before them flapping its wings up and down. The gigantic bird was in front of them flapping its wings up and down. There was a lot of wind.
Does that help you understand it?
