他答应我，一毕业他就会回来。

He promised me that he will come back after graduation.

youdao

他答应我他在这里唱歌。

He promised me to sing here.

youdao

他答应我他会来。

He promised me to come.

youdao

I've enjoyed reading him so much that when I was asked to write a book about him, I agreed to do so.

因为我非常喜欢他的书,所以有人邀请我写本关于他的书的时候，我就答应了。

耶鲁公开课 - 文学理论导论课程节选

then a few seconds later he says, "I promise." and something like that.

几秒过后,他说，我答应你。

麻省理工公开课 - 电影哲学课程节选

You know I've promised him I would be careful."

我答应了他我会小心点的“

耶鲁公开课 - 死亡课程节选