Cách sử dụng
The expression "out of the blue" means something unexpected, sudden or surprising that happens without any warning or preparation. It is often used to describe an event, statement or situation that occurs unexpectedly or without any obvious reason. For example, if someone receives an unexpected job offer, they might say "it came out of the blue" to explain that it was not something they were expecting or had planned for. Similarly, if someone receives bad news or an unpleasant surprise, they might say "it came out of the blue" to describe the sudden shock or surprise they felt. Overall, "out of the blue" is a useful expression to describe any unexpected or surprising event or situation.