Morphosyntax of the verb in Lingala

In this paper I have analysed the internal structure of the verb in Lingala which is a Bantu Language spoken in both Congo and Angola. Being an agglutinative language Lingala verb unit is a concatenation of many elements glued to the verb root including subject tense and aspect polarity etc. As a contribution to morphological valence changing I have developed the N-Tier Structure (NTS) theory. It is an all-in-one tree structure with distinct layers displaying syntactic morphological lexical and sometimes phonological information of sentences before and after the valence alteration.