luck后接to还是for

都可以接，例如：

1、It was his bad luck to be in the wrong place at the wrong time.算他倒霉，在错误的时间出现在错误的地方。

2、Just my luck to arrive after they had left.我总是这样倒霉，他们离去后我才赶到。

3、He crossed his fingers， asking for luck for the first time in his life.他交叉手指，生平第一次祈求好运。