* Simple Subjects: The most basic subject is a single noun or pronoun. Examples:
* Cat sat on the mat.
* She went to the store.
* Compound Subjects: Two or more simple subjects joined by a conjunction (and, or, but) make a compound subject. Examples:
* Cats and dogs are great pets.
* He or she will be chosen for the role.
* Subject Phrases: A subject can also be a phrase that functions as a noun. This often includes a noun followed by modifiers. Examples:
* The big, red ball bounced down the street.
* The girl with the blue dress smiled at me.
Let me know if you have any other questions about subjects in grammar!