1·The lawyer is paid only if he wins.
律师只有打赢官司才会被付费。
—— 《柯林斯英汉双解大词典》
2·Only if the red light comes on is there any danger to employees.
只有红灯闪亮时才有危及职工的险情。
—— 《牛津词典》
3·That theory held true only if the demand for money was stable.
那一理论只有在货币需求是稳定的时候才正确。
4·Money can make you happy, only if you spend it in a clever way.
只有在你聪明地花钱时，钱才会使你感到快乐。
5·Where the penalties are not a must, they should be imposed only if the facts of a cast support it.
如果处罚不是必须的，则只有在有事实支持的情况下才应施加处罚。