A complete sentence has three components: a subject (the actor in the sentence)a predicate (the verb or action), and a complete thought (it can stand alone and make sense—it’s independent).
They waited for the bus all morning. (complete sentence)
My father builds a house. (complete sentence)
My father looked at the house plans. (complete sentence)
We decided to paint it blue. (complete sentence)
A sentence fragment is an incomplete sentence. Some fragments are incomplete because they lack either a subject or a verb, or both.
No main verb:
A story with deep thoughts and emotions. (needs a predicate)
A story with deep thoughts and emotions. (needs a predicate)
The plans for the house. (needs a predicate)
No Subject:
With the ultimate effect of all advertising is to sell the product. (needs a subject)
With the ultimate effect of all advertising is to sell the product. (needs a subject)
Changes his mind. (needs a subject)