1. Oh, I was up all night.
【译文】哦,我昨晚一夜没睡。
【解析】be up 熬夜,没睡
也可以用stay up late或stay up all night来表示熬夜;
I am going to stay up late to finish my paper.
为了完成报告我打算熬夜不睡。
I cannot brace myself up as I stay up all night last night.
我昨晚熬夜了,今天我打不起精神。
2. Remember that notary public who cheated on me?
【译文】还记得那个对我劈腿的公务员吗?
【解析】cheat on 不忠于;
Do you know he has an extramarital affair/cheat on his wife.
你知道他有外遇/欺骗他妻子吗?