... I (sleep)28 CHAPTER 2 Azar, Betty Schrampfer Understanding andusingEnglishgrammar / BettySchrampfer Azar - - 3rd ed.p. cm.Includes index.ISBNO-13-958661-X1. English language—Textbooks ... wonderful parents,Frances Nies Schrampfer and William H. Schrampfer, who set me on my path. UNDERSTANDING AND USING NGLISH GRAMMAR Third Edition BettySchrampfer Azar Chapter 10 MODALS, ... tree when it began to rain.Present and Past, Simple and Progressive 27 UNDERSTANDING AND USING ENGLISH GRAMMAR Third Edition AcknowledgmentsThe secondedition of UUEG was thoroughly reviewed...