A group of words that includes a subject and verb but does not express complete thought is called .?

A group of words that includes a subject and verb but does not express a complete thought is called a phrase.

Here's why:

* Subject and Verb: A phrase must have a subject (who or what is performing the action) and a verb (the action itself).

* Incomplete Thought: A phrase doesn't stand alone as a sentence because it lacks a complete idea. It often functions as part of a larger sentence, providing more information about the subject or verb.

Examples of Phrases:

* Running through the park (participial phrase)

* The dog with the wagging tail (prepositional phrase)

* To eat a healthy breakfast (infinitive phrase)

Note: While phrases include a subject and verb, they are not considered clauses. Clauses are complete thoughts, even if they are part of a larger sentence.