What are subject nouns?

A subject noun is the noun that performs the action of a verb in a sentence. It's the who or what that is doing something.

Here's a breakdown:

* Noun: A word that names a person, place, thing, or idea.

* Subject: The part of a sentence that tells us who or what is doing the action.

* Verb: A word that describes an action or a state of being.

Examples:

* The dog barked loudly. (Dog is the subject noun; it's performing the action of barking)

* My friend gave me a book. (Friend is the subject noun; it's performing the action of giving)

* The sun shines brightly. (Sun is the subject noun; it's performing the action of shining)

* Happiness is contagious. (Happiness is the subject noun; it's the state of being contagious)

Identifying the subject noun:

To find the subject noun, ask yourself:

* Who or what is doing the verb?

* Who or what is the sentence about?

Note: Subject nouns can be singular or plural, and they can be simple or compound.

Let me know if you have any more questions!