English as a Lingua Franca (ELF) refers to the use of English as a medium of communication between peoples of different languages. We include as potential ELF users both those who speak English as an additional language and those who speak English (in any of its social, regional and national varieties) as their main language. So, if you are speaking English with another student who speaks English as an additional language, whether or not English is your main language, you are both using ELF