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adj.额外的，多余的；职责以外的
1、it was supererogatory of her to gloat;───让她心满意足是多余的；
2、Some theories of morally correct action also introduce the category of the supererogatory: an action is supererogatory if and only if it is morally praiseworthy, but not obligatory.───有些道德正确的行为的理论还引入了多劳类别：一个行为当且仅当它在道德上值得表扬但不是义务时就属于多劳类别。
1、Generally speaking, the jurists of Islam, based on an authentic hadith of the Prophet, agree that a Muslim's supererogatory prayer is best performed at home.
2、Supererogatory acts raise questions of first importance for ethical theory.
3、It was supererogatory of her to gloat.
4、They perform the obligations, refrain from all the prohibitions, and engage in performing many supererogatory acts of worship.