so far

• 为什么他至今还没有来？

  why hasn't he arrived yet?

• 问题至今尚未解决。

  Up to now, the problem hasn't been solved.

• 鲁迅的思想、行动、著作至今仍闪烁着不灭的光芒

  up until this day, Lu Xun's thoughts, actions, and works are like a shining beacon that will not die