This worksheet will help your second graders identify the difference between subject and object pronouns. Subject pronouns such as "I," "we," and "you" are used as the subject of a sentence. Object pronouns such as "me," "us," "you," and "her" are used to replace a noun and receive the action in the sentence. First, your students will read a short passage, and then they will determine if the bolded words are object or subject pronouns.