I can only speak from an English perspective. Be seems to me to be a transitive verb, when joining a subject and an object, yet it is described as a copula. What I mean is The bullseye is the ...
There is a property of languages with respect to copula (a verb 'to be' to mark equivalent thing): the copula may be necessary, or prohibited (and more complex mixtures of necessary and prohibited. ...
I recently noticed that most languages have an irregular conjugation for the verb To be. I say almost because I don't know all languages, but the ones I've seen all have some irregularity sooner or ...
In what contexts can the zero copula occur in African-American Vernacular English? What rules govern its use—for example, what makes she runnin' more likely to be acceptable than ?she a runner? Some ...