continued from Ready made conversational phrases in amerian english be a heartbeat away from (something) to be the next ruler upon the final heartbeat of the current ruler The vice president is just a heartbeat away from being president. The prince was only a heartbeat away from being king. be a million miles away to be distracted and daydreaming; not to be paying attention You were a million miles away while I was talking to you. Most of the class was a million miles away in the hot spring afternoon . be a slave to (something) to be under the control of something; to be controlled by something Mary is a slave to her job. Bill is a slave to his drug addiction. Be good . a departure response meaning 'Good-bye and behave yourself' Jane: Well, we're off. Be back in a week. Mary: Okay, have fun. Be good. Jane: Do I have to? Tom: Bye, Be good. Bill: See ya. Be happy to (do something). Mary: Excuse me, could you do me a favor? I'd like to change some notes. Banker: Sure, ...