What is the complete subject and predicate and what is the simple subject and predicate in the sentence below?

My next-door neighbor asked me if I would mow his lawn while has was on vacation.

My next door neighbor, asked me if I would now his lawn while he was on vacation, neighbor, asked

Explanation:

The subject is what we are talking about, so its that. The rest is the predicate, or action. The simplest sentence we can get from this is "neighbor asked" which has a subject and a predicate.