The simple subject tells who or what is doing something. It is just the subject noun or pronoun without any other words that describe or modify it.

What's a simple subject example?

The simple subject is only who or what is “doing” the verb, without any modifiers. Simple Subject Examples: Thomas Edison invented the light bulb. In this sentence, “Thomas Edison” is “doing” the verb, “invented.”

How do you find a simple subject?

A simple subject is the main word or words in a subject. It does not include any of the modifiers that might describe the subject. To identify the simple subject in a sentence, ask yourself who or what performs the action in the sentence. Remember, though, that a simple subject is very basic.