DESY MARDIANTI. 2010. An Error Analysis of Suffix for Adjective Used by The Second Year Students of SMP N 1 Pangkah in Tegal Regency in Academic Year 2009/2010. Thesis. First advisor: Nur Antoni ET, SS, M.Hum. Second advisor: Drs. Masfuad E.S, M.Pd. English Department, Teacher Training and Education Faculty, Pancasakti University Tegal. Key words: An Error Analysis, Adjective, Suffix. A n…