Yasser El-Shami has an MA in teaching Arabic as a foreign language. He has about twenty years of experience in the field of language teaching, including teaching English for more than 17 years. He has designed complete course books and developed various instructional materials for teaching English as a foreign language to adults. He taught Modern Standard Arabic, Egyptian colloquial, and Media Arabic at the American University in Cairo. He is especially interested in written and spoken Colloquial Egyptian Arabic and believes the Egyptian linguistic reality is best represented by the notion of diglossia in terms of recognizing Modern Standard Arabic and Colloquial Egyptian not only as two languages living side by side, but also in a state of integration rather than a state of a conflict.