Linking verbs and subject complement: S+V+C

A linking verb is a special kind of verb, it doesn’t state an action but rather, it connects the subject to a word or word group that describes or gives us more information about the subject.
Here are some examples of linking verbs: be, appear, feel, look, seem, sound, taste, become, grow, remain, smell, stay, and turn.

Linking verbs are accompanied by a subject complement. Typically a subject complement takes the form of noun or adjective, as in [1] noun group and [2] adjective.

1.      Llewellyn is a goblin.

2.      Llewellyn is adventurous.

Another basic sentence structure is that formed in the following manner:

Subject + (linking) Verb + (subject) Complement

Lewellyn (subject) + is (linking verb) + a goblin (subject complement) 

Lewellyn (subject) + is (linking verb) + adventurous (subject complement)