误It promised difficult job.
正It promised to be a difficult job.
析表示“有希望,有可能”, promise后接不定式时常限于to be...。
误She shows great promises as a pianist.
正She shows great promise as a pianist.
析promise作“希望”“前途”解时是不可数名词,后面不应该加s。
她答应帮助我。误She gave me the promise of helping me.
正She gave me the promise to help me.
析表示“答应某人做某事”可说give sb a promise to- v ,在promise后须用动词不定式,不能用“of+动名词”结构。