Help ! "Beaumont's Angels "are tearing out their hair over the pronounciation of adjectives finishing with "-ed"...

Posted by Cath on October 01, 2003

Beaumont's Angels (= there are 6 of us, teaching English at "Lycée Beaumont, Redon, Britanny, France")are getting desperate ! we 're having a tough time finding some coherent grammatical rule we could give our students about the pronounciation of the adjectives finishing with "-ed". Why do you say "crooked"[-id], "wicked" [-id],"legged" [-id]...and "eyed" [aid],"barbed"(wire) [barbd]...?
Any help welcome !