These become restrictive when used to make someone do something they don’t want to do or stop someone doing something they want to do.
Daw'r rhain yn arferion cyfyngol pan gânt eu defnyddio i wneud i rywun wneud rhywbeth nad ydyn nhw'n dymuno ei wneud, neu atal rhywun rhag gwneud rhywbeth y maen nhw'n dymuno ei wneud.