I know *seguir* means 'to follow', 'to continue'. However I've seen it many times being used to mean **'still'** or at least translating to 'still'.

For example:

> 
> Mi hijo sigue en Londres por el trabajo My son is still in London for work
> 
> 
> Sigue lloviendo It is still raining
> 
> 
> 

What is the proper way/grammer to use it while using *seguir* to mean 'still'?