As if the locals, especially new generation, do use Arabic in majority of their communications. Do not blame the expats my friend, it is globalization taking action, do not blame the expat for everything. Until few weeks ago, Qatar University required high score in English test for education that does not require English, and the entire official local schooling system went 100% English from grade 1. Let the Arabs master their language, the expats will only learn if they see an advantage to do so.