Abstract: The subject of the research is the methods of expression of the subject and the predicate in the Buryat and Russian sentences. The rationale of the research is caused by the fact that this is a rather understudied issue in Buryat studies. The purpose of the research was to provide a brief description of the methods that are used to express the principal parts of the sentence in the Buryat and Russian languages. Based on the provisions of associated researches, the authors also carried out a comprative analysis of the means of expressing the principal parts of the sentence and functions they perform in the Buryat and Russian languages. The main research method used by the authors was the synchronous descriptive method that implied a structural semantic analysis of speech constructs. The material for the research involved examples from the Buryat literature, and local newspaper 'Buryaad unan'. All examples are translated into Russian. The theoretical importance of the research is caused by the fact that the results of the research can be used to analyze the problems of comparing structural components of simple sentences in the Buryat and Russian languages. The results of the research can be used in the process of teaching the Buryat language at a school or university or writing school and university text books. 

Abstract: The subject of the research is interjections and onomatopoeic words as individual units of the Buryat language and their semantic characteristic. The rationale of this research is caused by the fact that this is a rather understudied issue in Buryat language researches even though interjections and onomatopoeic words are widely used by Buryat speakers. The purpose of this research is to define the place of interjections and onomatopoeic words in the system of the Buryat parts of speech, their classification and analysis of the way they perform as parts of speech. The main research method was the synchronous descriptive method that implied structural semantic analysis of speech constructs. The material for the research involved literary works, dictionaries, examples of verbal speech of Buryat speakers, and practical experience of the author in speaking the Buryat language. All examples are translated into Russian. The theoretical importance of the research is caused by the fact that the results of this research can be used to analyze the problems of the use of interjections and onomatopoeic words as well as pragmatically oriented researches in Mongolian languages. The results of the research can be also used when teaching the Buryat language at schools, universities, and writing school and university text books.