Here's why:
* Subject: The subject is the noun or pronoun that performs the action or is described in the clause.
* Predicate: The predicate is the part of the clause that tells us something about the subject. It includes the verb and any objects, complements, or modifiers.
Example:
* The cat sat on the mat.
* Subject: The cat
* Predicate: sat on the mat
Without a subject and a predicate, a group of words is not considered a clause. It might be a phrase, but it won't be a complete thought.
There are two types of clauses:
* Independent Clause: A clause that can stand alone as a complete sentence.
* Dependent Clause: A clause that cannot stand alone as a complete sentence and needs to be connected to an independent clause.
Both independent and dependent clauses must have a subject and a predicate.