Personal Pronouns in Writing
Typically, writers should avoid using conversational language in formal writing. When writers use first and second-person pronouns (I and you), the writing can sound like a conversation between the reader and writer. While this effect may be appropriate--even desirable--in casual writing, conversational language is generally considered inappropriate in formal writing.
In other words, while personal pronouns are appropriate for casual notes and e-mails, more formal writing occasions to call for the use of third-person pronouns.
Examples
The following sentence contains personal pronouns.
I think you should have to attend parenting classes if you are found guilty of child abuse.
This sentence sounds like a conversation between two people, doesn't it? Its purpose is clear. The writer states a position on a controversial issue.
While this sentence would be appropriate in a conversation between friends, it would not work as well in a formal essay. The sentence sounds almost as if the writer is suggesting, with the use of the pronoun you, that the reader is guilty of child abuse.
In addition, by using the phrase I think, the writer inserts himself or herself into the argument. The reader can more easily focus on the topic if his or her attention is not diverted by the writer's self-reference. The I think phrase is also unnecessary; since the sentence does not credit an outside source, it will be clear to readers that the sentence presents the writer's thoughts.
How to Replace Personal Pronouns
First and second person pronouns (forms of I and you) should be replaced in formal essays. To accomplish this, first, identify the first and second person pronouns. Then replace these pronouns with an appropriate third person pronoun. We could revise the argumentative sentence above by following these steps.
People who abuse their children should be required to attend parenting classes.
This type of revision keeps the reader focused on the argument, rather than diverting attention to the reader or the writer.