Predicate Nouns and Predicate Adjectives

In this sentence, the word is is a linking verb. The word teacher is a noun. We call this noun a predicate noun. Linking verbs always LINK the subject to a predicate noun or a predicate adjective.

In this sentence the word are is a linking verb. It is linking the subject They to an adjective, kind. The word kind is a predicate adjective.

In this sentence, the word are is the linking verb. Then, we see both an adjective and a noun. Nice is an adjective. People is a noun. However, always remember that nouns trumph adjectives when it comes to predicate nouns and predicate adjectives. Therefore, there is a predicate noun, people. The word nice is just a regular adjective describing people.