Sometimes when we use a pronoun, we forget to look back and see if the noun that we are referring to is singular or plural. As a subject must agree with its verb, a pronoun must agree in number with the noun it refers to. Students often skip that important proofreading stage before they hand in their assignments and essays. Once they have learned to identify their own unique patterns of error in their writing, practicing those necessary skills with improve their fluidity, confidence, and ultimately earn them that good grade. This handout includes a description, explanation and exercises that increase in difficulty to allow the student to become an accomplished writer.