Starting with subject complements FYI I'm using Bold words from a school book .
Many times a subject and a verb are sufficient enough to express a complete thought. Meaning in sentences like The Girl Ran. That has no need of a completement
However That isn't enough sometimes. For example She loves . she loves what?
She loves carrots. Or He was... He was what ? He was kind etc.
Anyway I help you more later right now its bedtime for me soooooo I'll help more later
Any Questions?