对不起，我今天上课迟到了。

I am sorry I was late for class today.

youdao

对不起，老师，今天早上我迟到了。因为我在梦里观看了一场球赛。

Excuse me for my coming late, Sir. I watched a football match in my dream.

youdao

对不起我迟到了——我一时头脑糊涂，忘记了今天要开会。

I'm sorry I'm late - I had a mental aberration and forgot we had a meeting today.

youdao