BIBLIOGRAPHY       

                  1. Gordon E. M. and A. N. Krilova “A Grammar of Present-Day English”,   

                    Higher School Publishing House 1974

                  3.  Kechyan S., “A Course of English Grammar”, <Lingva> Publishing   

                     House, Yerevan 2004

                  4. Ilyish B., “The Structure of Modern English”, Higher School Publishing    

                      House, Leningrad 1971

                  5. Smirnitsky E. A., “Морфология Английскогo Языка”, Москва 1955

                  8.  Бархударов  A.    , “Грамматика Английского Языка”, Москва 1973

                   9.  Каушанская  В. Л,  “The English Grammar”, Higher School Publishing  

                       Moscow 1976

      1. Introduction………………………………………………………………………..2-3

      2. The Notion of the English perfect Tense Forms………….………………………4-5

      3. Meaning, Use, Formation of the Perfect Tense Forms.………………………….6-18

      4. Conclusion………………………………………………..……………………...19-20

      5. Bibliography……………………………………………………………...………….21