Do you have a sec?

回家路上听到一句“Do you have a second?" 

"This is a nice way to make sure your boss isn't busy when you wanna ask them something."

还有两种近似说法，We could also say this in two different ways：

Do you have a minute? I wanna ask you something.

Do you have a sec? I need to talk to you.

联想到汉语的情景，在公司想要对上级说什么的时候，打通电话一般第一句都会说“XX，有空吗？/现在方便吗？”今天听到的这句正好打通了这个情景的英汉对应关系。Do you have a sec? 正好能表达”有空吗/方便吗“，直接了当，又不失礼节。

学语言的一个难点就是要学人家约定俗称的惯用法，如果直接去想“方便吗，有空吗”的翻译，肯定是不地道的。毕竟人家的习惯和思维跟我们是很不一样的，比如“人还没到齐”英语的习惯说法是：They are still arriving.