I'm behind in my work.

我工作进度落后了。

youdao

I'm behind in my work. I will have to stay up all night to meet the deadline.

我的工作进度落后了，我得开夜车赶进度了。

youdao

I'm behind in my work because our office had three groups of visiting firemen this week.

本周我们公司有三批远方来客，因此我耽搁了工作。

youdao