I've been trying to understand how to use the words compel and oblige. "You may compel someone to do something" is not the same as " you may oblige someone to do something" accordingly. If I'm wrong, might you explain me please?. I understand the meaning of "compel" as something pretty similar to "force", except that using "compel" you are free to choose if do it or not, and using "force" you have no choice and you have to do it. In this case if I wanted to use "oblige" I ought to write something like "someone may be oblige to do something". Is that so? If it is so, would you so kind to explain me the meaning of " you may oblige someone to do something" (It sound to me like you may help someone to do something, but I'm not sure). Finally if you might corret my writing it would be great. I would do the same for you. Thank you so much.