his promise to his father

他对父亲的承诺

break / make a / one’s promise

违背诺言 / 作出承诺

carry out one’s promise

履行诺言

keep / live up to a promise

信守诺言

Her work shows great promise.

她的工作很有前途。

— She’s not coming tonight.

她今晚不来了。

— But she promised.

但她答应过的。

Those clouds promise rain tomorrow.

那些云预示着明天有可能下雨。