have you ever needed to copy an object from drawing to drawing but were annoyed with not being able to specify a basepoint? Well you probably used CTRL+C to copy and CTRL+V to paste, right?
Try using CTRL+SHIFT+C to copy.
It will ask you to specify a basepoint, then ask you to select the objects then hit enter. Or
Select the objects first then CTRL+SHIFT+C then specify the basepoint.
Now when you do a CTRL+SHIFT+V, you can snap your copied object.