ABSTRACT Siti Admiyati, 2012, The Effect of Bilingual Teacher's Talk on Student's Mastery Speaking Skill in seventh grade of SMPN 4 Pamekasan. Under-graduate, Thesis, English Teaching Learning Program (PBI), The State Islamic College (STAIN) Pamekasan. Advisor: Drs. Mosleh Habibullah M.Pd. Keywords: Bilingual, Teacher's Talk, Speaking Skill There are four skills in English languages …