The 4th pattern for forming basic simple sentences is the SUBJECT-VERB-NOMINAL SUBJECT COMPLEMENT.

We already established what the subject and verb are in previous episodes.

So today, we are focusing on the subject complement.

The nominal subject complement renames the subject. It tells us who the subject is.

It is realised with nouns, nouns phrases, or pronouns just like the subject and object.

The verb in this pattern is a linking verb and not an action verb because no action is being transferred.

I am an English language tutor.

The boys are students.

The winner is I/me(The winner is me is used more in informal context.)

English language tutor, students and I/me are all telling us about the subjects I, the boys, and the winner respectively.

TAKE AWAY: I am a glutton for tranquility.––– Wole Soyinka.