The nominative or subjective case = pro-nouns functioning as the subject.
The predicate nominative is a noun our pronoun after a linking verb that renames the subject.
Passive voice, oh my!
Grammar books say that the predicate nominative sounds too formal for speech, it should be used in formal writing. I would like to add the caveat, that it should be used rarely, because the predicate nominative is passive.
"The doctors are they," is passive. "They are the doctors," is active.
So, if your critiques say you have a problem with passive voice, there is a good chance you may have caught a case of the predicate nominative.
Homework- make the following sentences active.
The crazy person is she.
The psychopath is he.
The clowns are they.
The idiot is me.
M.R. Jordan is a writer, editor, sporadic blogger, and lover of beer. Lives in South Korea with her two cats, Bear and Geumbi.
Bear (Gom in Korean) then (above) now (below)
Geumbi (Gold in English)... then (above) and now (below).