Modifications of english vowels in connected speech

English learners may have many troubles in listening, speaking, reading, and writing. Most of them have been discussed quite clearly in many courses, studies, and English teachers’ lectures. However it is possible that the systems of listening facilities still have a few about modifications of vowels in spoken English. The purpose of writing of our paper work is consecutive and all round studying of modifications of vowels in connected speech. This topic is chosen for our scientific research in the hope that it will, to some extents, help others like me overcome this kind of challenge.