Definition: used to say what will happen if another thing does not happen Level: B2
我们必须在六点前到那里，否则我们会错过开头。
We must be there by six, ___or ___else we'll miss the beginning.
他告诉我快点，否则我会错过公交车。
He told me to hurry up, ___or ___else I would miss my bus.
完成你的作业，否则你不能出去玩。
Finish your homework, ___or ___else you can't go out to play.
