直到半夜英文怎么说

"直到半夜" 的英文表达为 "until late at night" 或 "until midnight"。

"Until" 是英语中的一个介词，意思是 "直到"。"Late at night" 或 "midnight" 则表示时间。

例句1:
I was studying until late at night.
(我一直学习到深夜。)

例句2:
We were dancing until midnight.
(我们一直跳舞到半夜。)