How to show default language content when isn't translated

Hi,

For example I have the url:
www.mysite.com/term1/my-node-content
the default language for the site is english, I have language spanish activated, as the node: my-node-conten is not translated, when I what to see the node in spanish, its url is :
www.mysite.com/es/node/1
How can I get this kind of url: www.mysite.com/es/term1/my-node-content, when this node is not translated??
I tried "active translation" module but it didn't work.