1. Full name: Duong Tran Huong Thao                            2. Sex: female

3. Date of birth: 22 September 1976                               4. Place of birth: Bac Giang

5. Admission decision number: 1342/QĐ-ĐHNN Dated 12/07/2017

6. Changes in academic process: None

7. Official thesis title:

The semantic system of verbs containing the на-, про- prefixes in Russian and the way to convey their meaning in Vietnamese

8. Major: Russian linguistic

9. Code: 9220202.01

10. Supervisors:

Supervisor 1: Associate Professor. Nguyen Tuyet Minh, PhD

Supervisor 2: Associate Professor. Pham Kim Ninh, PhD

11. Summary of the new findings of the thesis:

The new findings of the dissertationlie ina contrastive analysis of the verbscontaining the на-, про- prefixes in Russianin a chronological and systematic way  and map out ways to convey their meanings in Vietnamese.Hence, major similarities and differences between the two Russian and Vietnamese languages have also been portrayed. Finally, the study has drawn some of the following important conclusions:

1) Russian and Vietnamese are two different languages in terms of forms as Russian is a derivational language, in contrast, Vietnamese as a non-derivational one. Despite their discrepancies in form and structure, the two languages share their resemblances in logical and connotational meanings. Hence, their similarities in meaningsare the bases for a contrastive analysis of the means of expressing them in the two languages.

2) In Russian, prefix is a type of aspect-formation and word-formation. It is estimated that there are roughlywidely used20 prefixes with different connotational meanings. There are prefixes that will create certain modes of actions or form the verbs of the perfect aspect when combined with verbs of semantic groups.However, thisstudy only focuses on typical features, functions of word-formation, semantic structures, contextual meanings and definite modes of actions of the two prefixes.

3) The semantic structure of any verbs containing prefixes is comprised of the meaning of the prefix, the root verb and contextsdetermined by nouns, discourse and suffix -xia - the factors affecting the meaning of the verb containing that prefix.

4) The most significant contribution of this study is to map out ways of conveying a large volume of meanings of Russian verbs containing the на-, про- prefixes in Vietnamese. This is a very important contribution to teaching Russian in Vietnam. The difference in the ways of expressing the meaning of verbs when combined with the two prefixesbetween Russian and Vietnamese depends heavily on the features of the two languages. If in Russian, the semantic system of this verb group is expressed primarily by the prefix with the clues of contexts, in Vietnamese it is expressed by a combination of the verb with indicators of the nature of action with different means of context such as adverbs of degree, adverb of space, time, structures with direct modifiers and sometimes idioms, fixed phrases.

12. Practical applicability:

- The findings can be applied in teaching Russian as a foreign language in Vietnam; can be a reference for teaching methodology concerning verbs containing prefixes.

- The findings can be a reference for the compilation of ethnic-oriented textbooks (such as "Russian for Vietnamese people"); the compilation of Russian-Vietnamese and Vietnamese-Russian bilingual dictionaries to overcome common difficulties in teaching and learning Russian in the context of  non-native language environment; for translation of publications from Russia into Vietnam and vice versa.

13. Further research directions:

Contrastive analyses of other prefixes which are barriers for learners of Russian.

14. Published works related to the dissertation:

(1) Duong Tran Huong Thao (2017), “Russian verbs in perfect form denoting action result and their Vietnamese equivalence”, Journal of Military foreign language studies (09) p. 3-9, Ha Noi, ISSN2525-2232.

(2) Duong Tran Huong Thao (2017), “The role of contrastive analysis in foreign language teaching and some common exercises to deal with mistakes made by foreign language leaners due to the negative influence of their mother tongue”, Journal of Military foreign language studies (10) p. 19-27, Ha Noi, ISSN2525-2232.

(3) Duong Tran Huong Thao (2018), “Applying contrastive analysis to teaching Russian to cadates at Military Science Academy”, Journal of era humanity research, р. 79-82, Matxcova, ISSN1012-9103.

(4) Duong Tran Huong Thao (2018), “Semantic structure of Russian verbs with prefixes”, International Graduate Research Symposium Proceedings: Linguistics – Foreign Language Education – Interdisciplinary Fields, p. 611-619, Ha Noi, ISBN978-604-62-5281-8.

(5) Duong Tran Huong Thao (2018), “Meaning transfer of verbs with prefixes and suffix “СЯ” in Russian language”, Journal of Military foreign language studies (18) p. 3-7, Ha Noi, ISSN2525-2232.