Question

前几天给您的信不知您收到了吗？一直没有等到您的回信，我感到很着急。用英语怎么翻译

Answer 1

I'm worried about if you received my email?(电邮email,纸质信件letter)I‘m waiting for your sooner reply.(商务用，写到这里就可以，否则显得不专业。)
如果一定要表达“很着急”生活用可以说：You know I need your reply to relieve my anxiety.

Answer 2

Did you recieve the letter to you a few days ago?I didn't get your reply，I feel very anxious.
自己翻译的，比在线的准确，望采纳！！