The complete subject is the simple subject (a noun or a pronoun) plus any word or group of words modifying the simple subject that tells who or what the sentence is about:To find the complete subject, ask Who? or What? insert the verb, and finish the question. The answer is the complete subject:The simple subject is the essential noun, pronoun, or group of words acting as a noun that cannot be left out of the complete subject. In order to identify it, remove the complements and modifiers and whatever is left is the simple subject: