A sentence fragment lacks a key part in a sentence:
"Went jogging."
A sentence has subject and predicate.
"Steve went jogging."
Or another example is:
"ran"
instead you should use "she/he ran.
For a proper sentence you need what, who, where, also it would be better if you also put in when or why or put then in together.
Do you work? is a complete sentence; it is not a sentence fragment.
"She wave." is fragment but "She waves" is a sentence.
fragment
Fragment.
sentence fragment
It is a sentence fragment
Make each fragment into a complete sentence.
is a sentence fragment
"After the storm," is not a complete sentence so it is a fragment.
A sentence is a fragment when you do not have a noun/pronoun and a verb.
A fragment sentence is a partial sentence. It does not have everything it needs to be a full sentence. For example: "The dog" is a fragment.
In order to not write a sentence fragment, you must always have a subject in your sentence and a predicate. For example: Fragment: Went to the movies. Sentence: I went to the movies.