摘要：The study of language in use has become a crucial issue in every branch of study, such as medical, politics, economics, etc. In doing the interaction for those purposes people use language. The theme of this research is language in use in medical conversation, the data taken from the midwifery conversation of some textbooks of English language teaching for midwifery. This study tries to reveal the language in use in midwifery conversation. On the basis of this research, the question rises as: What kind of language functions used in midwifery conversation? In order to answer this question the theories of language in used proposed by some experts such as Leech (1974), Cook (1994) and Halliday (1985) used as references in this study. However the formulation of language in use redesigned based on the general guidelines in giving the counseling to the patient found in three ELT textbooks mostly used in Indonesian universities especially for midwifery students, this research also presents the occurrence of macro and micro language functions, moreover this research reveals the language in use both in English and Indonesian, thus it helps the teachers in stressing every point of language in use, so that they can easy to teach the expressions and the grammar which can be used in the conversation both in English and Indonesian.
