or else

Make haste, or (else) you'll be late.

快点, 然就来及了。

He must be teasing,or else he’s mad.

他一定是在开玩笑,然他就是疯了。

And from my soul too; Or else beshrew them both.

那但是我话，也是我灵魂话；倘有虚假，让我灵魂下地狱。

"Keep off oil, or else it will perish your rubber boots."

"油,否则会把你橡胶鞋弄坏。"

You must study harder (or) else you'll fail in the English examination.

你必须努力学习, 然话, 英语考试会及格。