Her schemes backfired on herself,and she lost her boyfriend forever.

她计划害了她自己,从此永远失去了她男友。

His scheme backfired (on him) and he lost money.

计划招来相反，赔钱了。

The surprise I had planned backfired on me.

我设计好惊喜卻产了适得其反后。

His plan backfired on him, and he lost all his money.

计划事与愿违, 因此钱全亏掉了。

His scheme to win the girl backfired and she went to another guy.

追求那女孩计划产了反效,现在她名花另有主。

The car backfired.

那辆车发逆现象。