ought /ɔ:t/ aux. v.(无时态和人称变化，后接带to的不定式) 1. (表示责任、义务、合适性、必要性、可能性及愿望等)应当，应该：Every citizen ought to obey law. 每个公民都应当守法。 Teachers ought to be honoured. 教师应当受到尊敬。 2.(后接动词不定式完成式) 早应该，本该，本当：You ought to have told me that yesterday. 你昨天就该把那件事告诉我了。I ought not to have done it.我本不该做这件事。