"否则'用英语怎么表达,请列举出尽可能多的表达!

or else
否则，要不然
He must pay $100 or else go to prison.
他得付100美元否则要坐牢。
otherwise
（在不同情况下）否则
We'll go early, otherwise we may not get a seat.
我们得早一点去，不然就没有座位了。

or
otherwise
You should go to school,or I will tell your mum.
You should go to school ,otherwise I will tell your mum

or
or else
otherwise