Meaning: Explode (bomb), start ringing (alarm)
Example: The fire alarm WENT OFF because someone was smoking in the toilets.
Meaning: Go bad
Example: The milk WENT OFF because I forgot to put it in the fridge.
Meaning: Start to dislike
Example: I WENT OFF her when she lied to me.
Meaning: Leave a place
Example: Please don't GO OFF until we have sorted this out.
Meaning: Take place, follow a plan or pattern
Example: The party WENT OFF well.
Meaning: Stop working (electric/electronic equipment)
Example: The lights GO OFF automatically when the office is empty.