This document provides examples of using the simple past tense "was/were" in affirmative, negative, and interrogative sentences. It demonstrates the use of was/were with different subjects: I/was, you/were, she/was, he/was, it/was, we/were, you/were, they/were. For each subject, it gives an affirmative sentence, a negative sentence, an interrogative sentence, and the yes/no responses to the interrogative. The document is intended as a lesson for using was/were in the simple past tense.