Here, it is our collaborative work based on " Celce-Murcia, M. & Olshtain, E. (2000): Discourse and Context in Language Teaching. A Guide for Language Teachers. U.K.: CUP" Click on the links in order to access to the presentations. They are useful to know more about how the four skills work together in English Language. Chapter 6: READING Chapter 7: LISTENING Chapter 8: WRITING Chapter 9: SPEAKING .