He has promised to reform.

他许诺要改过自新。

《牛津词典》

He has promised to finish the job by June and I am sure he will deliver.

他答应在六月底完成这项工作，我相信他会履行诺言。

《牛津词典》

He has promised drastic disciplinary action if they do not mend their ways.

如果他们不改过自新的话，他已保证会严惩不贷。

《柯林斯英汉双解大词典》

He has already met with Hispanic members of Congress and promised to work with them to try to shape a plan.

VOA: special.2009.04.18

God has promised at this point, however, not to destroy all humankind again, So he experiments with a single individual of faith.

但是上帝却在这时保证，再也不摧毁全人类，因此他检验了个人信仰。

耶鲁公开课 - 旧约导论课程节选

Mr.Hawass has promised to make life unpleasant for museums that he believes have unlawfully kept Egyptian art objects.

VOA: special.2011.03.08

He has promised to bring any peace agreement to a vote in a national referendum.

CNN: Albright: 'No done deal' as Israel, Syria prepare to meet

He has promised a decision this month before Congress comes back from its recess.

CNN: John King: Bush vacation agenda

He has promised to reverse the rise in unemployment before the end of the year.

BBC: French unemployment at new high