Charles Hall, Ph.D., dr.h.c. is an Associate Professor of English at Alfaisal University in Riyadh, Saudi Arabia. His work intertwines three areas of interest: TELF (Teaching English as a Lingua Franca), ESP (English for Specific Purposes), and pre- and in-service teacher training. He has taught, trained teachers, or lectured in over 40 countries, including Oman, Saudi Arabia, Egypt, UAE, Iraq, Sudan, Yemen, Lebanon, Jordan, and Syria. He is the author or co-author of several texts and article including the recently published Phonetics, Phonology & Pronunciation for the Language Classroom from Palgrave.