This overview chart shows the positive, negative and interrogative (question) forms of all the principal tenses in English with a brief description of the principal usage. The timeline tenses chart provides a handy visual reference sheet to English tenses and their relationship to the past, present and future. Included you will find active, passive, simple and continuous forms positioned according to their occurrence in time. Once your feel comfortable with your tenses, try these tense review quizzes: Past Forms Future Forms Past or Perfect?