In sentences with olla verb a predicative noun renames, identifies, or defines the subject or subjects by categorizing it in some way or by providing more information about the subject or • whose the subject is - noun or pronoun.
In sentences with olla verb a predicative adjective describes the subject or subjects by giving information about characteristics such as the subjects’ appearances and feelings.
An adjective is predicative when it follows a linking verb such as ‘be’ or ‘seem’. In the sentence ‘She was right and I was wrong’, the adjectives‘right’ and ‘wrong’ are predicative.