The verb "to be" has different forms depending on the subject: am, is, are. In questions and negatives, the word order changes.
Tips and Strategies
[{"tip":"Remember that \"I\" uses \"am\", singular subjects use \"is\", and plural subjects use \"are\"."},{"tip":"In questions, the verb comes before the subject: \"Are you...?\", \"Is she...?\", \"Am I...?\""},{"tip":"For negative forms, add \"not\" after the verb: \"is not\" (isn't), \"are not\" (aren't), \"am not\""}]