Mrs. Jennings' classes' webpage: Shoe verbs or stem-changing verbs
Shoe verbs or stem-changing verbs
When we conjugate (change the verbs into the 6 different people) we take off the ending and add a new ending, but there are some verbs that also change in their root or base. These are called shoe or stem-changing verbs.

Dormir (to sleep), for example, changes from "o" to "ue" when you conjugate it. All forms change except for "nosotros" and "vosotros":

Yo duermo Nosotros dormimos
Tú duermes Vosotros dormís
Él duerme Ellos duermen
Posted by Johanna Jennings on Sep 24, 2009 at 12:33 AM to Grammar.