Explanation for passive voice: Passive Voice The passive voice is used when focusing on the person or thing affected by an action. · The Passive is formed: Passive Subject To Be Past Particple · It is often used in business and in other areas where the object of the action is more important than those who perform the action. For Example: We have produced over 20 different models in the past two years. Changes to: Over 20 different models have been produced in the past two years. · If the agent (the performer of the action) is important, use "by" For Example: Tim Wilson wrote "The Flight to Brunnswick" in 1987. Changes to:"The Flight to Brunnswick" was written in 1987 by Tim Wilson. · Only verbs that take an object can be used in the passive.