1.From the bottom of my heart 发自内心的

A:Amanda，I'm so sorry about what happened. I sincerely apologize from the bottom of my heart.
B:That's Okay. It wasn't your fault.

A：阿曼达，我对发生的事情感到很抱歉，我发自内心的向你道歉。
B：没事，不是你的错。

2.I'd like to take this opportunity to 我想借这个机会

A: I'd like to take this opportunity to thank you for everything you did for us.
B: It's my pleasure. I enjoyed working with you guys.

A：我想借这个机会感谢你为我们所做的一切。
B：不用客气，我喜欢与你们共事。

3.I am sorry 对不起

A: I'm sorry to be late.
B: Be careful next time.

A：对不起我迟到了。
B：下次注意。

4.I apologize 我道歉

A: I apologize. This should not have to be this way.
B: Apology accepted. Try to do better next time..

A：我道歉，事情不该发展成这样。
B：（我）接受（你的）道歉，下次干好点。

5.I feel terribly sorry. 我觉得很抱歉。

A: I feel terribly sorry. We caused a lot of trouble for you.
B: I never thought your hotel is like this. We will never come back again.

A：我觉得很抱歉，我们给你带来很多麻烦。
B：真想不到你们旅馆竟然是这样子的，我们再也不会来了。