[*] 283. With sum and a few other intransitive or passive verbs, a noun or an adjective describing or defining the subject may stand in the predicate. This is called a Predicate Noun or Adjective. The verb sum is especially common in this construction, and when so used is called the copula (i.e. connective). Other verbs which take a predicate noun or adjective are the socalled copulative verbs signifying to become, to be made, to be named, to appear, and the like.
[*] 283. With sum and a few other intransitive or passive verbs, a noun or an adjective describing or defining the subject may stand in the predicate. This is called a Predicate Noun or Adjective. The verb sum is especially common in this construction, and when so used is called the copula (i.e. connective). Other verbs which take a predicate noun or adjective are the socalled copulative verbs signifying to become, to be made, to be named, to appear, and the like.