— used to emphasize that a future event is going to be very surprising, important, etc.等到…吧（用于强调未来之事的惊奇、重要等）
Wait till you see their new house. It's just beautiful!你就等着看他们的新家吧。绝对漂亮！
You think you're in trouble now? Just wait until your father finds out what you did, young lady! [=your father will be very angry and will punish you when he finds out what you did]你现在就觉得有麻烦了？等着吧，小丫头，等你爸爸发现了你干的这事！