The most frequent error that creates a fragment is the use of a prepositional phrase as a sentence. When I came home from the store. When I came home from the store, I put the groceries away. A person needs to see their doctor yearly. Person, a singular noun, requires a singular pronoun, his or her .
People is a plural noun and requires the plural pronoun their .
People need to see their doctor yearly. Mary gave her bicycle away. The school changed its mind about the hiring policy. The poet write about the little things in life. The poet writes about the little things in life.