The study substantiates the importance of interdisciplinary bonds in the process of language training of students of forestry higher education institution. The paper aims at revealing the necessity of applying interdisciplinary bonds in the mastering both Ukrainian and English languages for specific purposes (USP and ESP) and development of professional communication skills of the future foresters. In course of the research the essence and distinguishing features of interdisciplinarity are defined. Interdisciplinary bonds are described as the main problem of the study. Theoretical background of this issue is revealed. In the course of our research the possibilities of application of interdisciplinary bonds are demonstrated. Dividing of interdisciplinary bonds into content-informative, operationalactive and organizational-methodological ones is revealed to be useful in order to form a systematic approach to their use when learning USP and ESP. Each type of interdisciplinary bonds is illustrated with the lexical tasks and exercises. Application of interdisciplinary bonds to form students' linguistic and communicative competence under the conditions of consistent study of USP and ESP and with the emphasis on professional subjects is considered to ensure a synergetic effect. The research findings prompt the conclusion that close cooperation of language teachers and subject specialists for further mutual enrichment at methodological level, formation of holistic systematic vision of training future foresters, and also continuity in mastering professional terms in Ukrainian and English will provide the level necessary to develop students' professional language.

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