ABSTRACT

     Vowel changing in nouns and verbs is one of the most important acoustical and morphological forms in linguistics . It is a main subject in phonetic and morphology . This study interests in vowel changing in linguistics which isn`t treated before . This study requires preface which defines vowel changing in linguistics and its kinds . The research mentions the original of this phenomena in order to explain it ( vowel changing ) in linguistics . It studies ( the objections of vowel changing ) which is a branch of vowel changing ( the orginal ) . The original is divided into three   kinds so that the study is divided into three chapters according to the division of vowel changing . Every chapter studies one type of vowel changing`s kinds .                                                                

     The study is divided into preface and three chapters , preface defines vowel changing (original) and its objections ( branch ) . The first chapter treats the objections of vowel changing by turning and mentions the rules of this kind then it gives the objections of vowel changing . the second chapter treats the objections of vowel changing by moving .                                              

     The third chapter treats the opjections of vowel changing by deleting . the study ends with the most important results and recommendations which appear in it .                                                              

     Finally , I beg God to accept my effort which I aim to participate in providing the literary library which this survey as far as I can , so as to serve humanity and science .