Locate and underline or highlight linking verbs in your writing.
Replace the linking verb with an appropriate action verb when possible. For example, you can rewrite the sentence "The book was critiqued," as "The book received a critique."
Ask the question "By what or by whom?" when you encounter a "to be" verb phrase or sentence structure. For example, "The door was closed," begs the question "Who closed the door?" Answer this question by rephrasing the sentence and adding the relevant information: "John closed the door," or simplify to "The door closed." Only leave the linking verb and passive structure if you don't know the answers to these questions.