Grammatical errors and awkward grammatical constructions invariably make a sentence more difficult to understand, and they should be eliminated. I have listed below some common problems that have come up in papers for you to think about for the next time that you have to write. A single comma should never separate the subject of a sentence from the verb. The reader can have difficulty finding the verb when the subject and verb are separated. A pair of commas may set off a phrase.
First person is used sparingly.
It is occasionally used to describe an opinion held by the author. Active voice is better than passive voice because it is usually easier to understand. The subject is the most important focus of the sentence, and these words waste that focus. All of these constructions usually create a weak sentence structure that can be improved. When using a pronoun, be positive that the antecedent is easy to identify.