英语中"祸不单行"怎么说?

it never rains but it pours

或者One woe doth tread upon another's hell.

再或者misfortunes never come singly

祸不单行 :
1. Misfortunes never come alone

2. It never rains but it pours.

3. misfortune never comes singly

It never rains but it pours.
Bad luck comes in threes.
When it rains, it pours.
Misfortunes never come singly.
An evil chance seldom comes alone.

Misfortunes never come alone.