Abstract The article deals with the factors of students’ successful learning and cognitive activity at the English lessons which is regarded as a significant aspect of teaching and learning. The hypothesis of the study is the efficiency of teaching the English language. That is based on the unity of the following pedagogical aspects: motivation as the main factor of learning the English language and the importance of communicative culture development at the English lessons. The purpose and hypothesis define the following research tasks: to analyze motivational aspect as one of the successful factors to teach English and to find the best conditions of students’ communicative culture formation. The main research methods are theoretical and methodological analysis of scientific, philosophical, psychological, pedagogical, educational and methodical literature on the topic of research; analysis, comparison and generalization of University teachers’ experience; analysis and systematization of University students’ educational results (creative works, etc.); pedagogical experiment; observation; interviews; questionnaires; a modeling; a method of expert evaluation. Thus, the research result helps to improve students’ successful learning and cognitive activity at the English lessons. Thus, practical significance of the research is in developing a differentiated system based on situational communicative tasks aimed at students’ successful learning and cognitive activity at the English lessons.