Subject
The dog jumped up.
What is the subject?
The dog or dog
The dog came back.
came back
Jack
Jack ran inside of his home.
ran inside of his home.
it was a cool day
sentence
Everyone
He looked out the window.
looked out the window.
the teachers were generous
sentence
It made them run away.
It
It was just sitting.
was just sitting.
What is a sentence?
It has a subject and a predicate.
The people were scared.
The people
barked loudly.
What is a fragment?
It is missing a subject or a predicate.