Fragments A fragment is an incomplete sentence. Although fragments are errors in writing, they are quite acceptable in speaking.
Fragments are unacceptable in writing.
One way to find fragments in your writing is to check each sentence for a subject and its verb. Another way is to read your paper aloud. If you come to a period at the end of a sentence and your voice wants to keep going. You probably have a fragment that can be attached to the next sentence. Or possibly to the one before.