很抱歉我忘了你们的结婚纪念日。

I'm sorry to that I forgot your wedding anniversary.

youdao

很抱歉我忘了带合同副本。

I'm sorry, I forgot to bring the copy of our contract.

youdao

“我来不了，”她抱歉地说，“我忘了怎么飞了。”

"I can't come," she said apologetically, "I have forgotten how to fly."

youdao

Shout out your name again, I've forgotten it.

再说一次你的名字,抱歉我忘了

耶鲁公开课 - 博弈论课程节选

So, I've forgotten your name again, I'm sorry.

我又忘了你的名字了,抱歉啊

耶鲁公开课 - 博弈论课程节选