I need a teacher!

[Bill]

In a nut-shell, I've found myself in a supervisory role in a production facility, managing mostly males in their 20's. On Friday, "John" explained to me that he had to leave at 3:00pm because "Bob" was bringing him home. "No", I said, "Bob is 'taking' you home. Not only will you learn to weld and repair machinery in this facility, but you will learn to speak properly. Is that understood? Yes, you may leave at 3:00 so that Bob may take you home." He looked at me like I was from Mars. "oh, ok, I get it." Later, my step-daughter said that she was leaving to "bring" her boy-friend home. "No", I said, "you are 'taking' him home". Again, a blank stare. I know I'm right, but it's only a matter of time before I have to explain this matter of 'diction'? Am I right or wrong? Help!!!