THÀNH NGỮ KINH DOANH 1

I'm sorry.

I made a mistake.

Please accept my apologies.

I'm sorry. I didn't mean to . . .

(I'm) sorry. I didn't realize that . . . .

That's okay.

No problem.

Prefacing bad news

I'm sorry (I have) to tell you this, but . . .

I hate to tell you this, but . . .

I don't know how to tell you this, but . . .

I have some bad news.

(Formal) written apologies

We regret to inform you that . . .

Regretfully, . . .

Unfortunately,