I'm sorry. I must dash away now. I'm already late for the concert.

对不起, 我得赶紧走,音乐会我已经迟到了.

《简明英汉词典》

Sorry I must dash away now, I'm already late for the meeting.

对不起,我得赶紧走了, 开会已经迟到了.

互联网

I am sorry, I must dash away now.

对不起,现在我得赶快走开了.

互联网

I am sorry , I must dash away now, I am already late for the concert.

对不起, 我要赶快走了, 去听音乐会已以晚了.

互联网