Suresh Canagarajah is Edwin Erle Sparks Professor and Director of the Migration Studies Project, Departments of Applied Linguistics and English, Pennsylvania State University, USA. Having a BA with a major in English from the University of Kelaniya, Sri Lanka, and a PhD in Applied Linguistics from the University of Texas at Austin, USA, Professor…

The article addresses the long-standing issue over the role of the mother tongue in the foreign language classroom. In the first part it is argued that the mother tongue lays the cognitive foundations for all subsequent language learning. Double comprehension as the basic requirement for learning to take place is explained. The second part is…