I had to sit up all night writing the report

yifei

I had to sit up all night writing the report.

我不得不熬通宵写报告。

　　动词词组sit up除了本意“坐起来”以外，还有一个比较常用的意思“熬夜”，英文的解释是“To stay up later than the customary bedtime”。　　例句：Do you always sit up all night playing online games? 你经常熬夜玩网游吗？