不幸的是，一场突如其来的大雨毁了这次野餐。

In an ___unfortunate turn of events, the picnic was ruined by a sudden downpour.

他是个不幸的人，似乎无论走到哪里，厄运都伴随着他。

He was an ___unfortunate person, as misfortune seemed to follow him wherever he went.

很不幸，火车被取消了，导致数百名乘客滞留。

It was ___unfortunate that the train was cancelled, leaving hundreds of passengers stranded.