former

The former president Clinton gave a speech at the local high school.

(Chinese) 前总统克林顿在当地的高中发表了演讲。

This building was a former factory before it was converted into lofts.

(Chinese) 这栋建筑在改造成阁楼公寓之前曾是一家工厂。

Of the two options, I prefer the former because it is much cheaper.

(Chinese) 在两个选项中，我更喜欢前者，因为它便宜得多。

He studied physics and math, but the former was his true passion.

(Chinese) 他学习了物理和数学，但前者才是他真正的热爱。