Grammar
Buli belongs to the Gur language family and its subgroup of Oti-Volta languages (formerly: Mole-Dagbani languages). This family also includes the languages of the Mossi, Gurma, Dagomba, Kusasi, Frafra and others. Like many others in this group, Buli is a class language.
It has five singular classes, four of which correspond to the four plural classes. Semantic word fields are only rudimentarily preserved in the classes. The first (wa/ba) class contains mainly persons, but many of the foreign words, adopted later, have also been incorporated into this class. The fifth (bu) class contains mainly amorphous objects such as liquids (nyiam, water; daam, millet beer) and abstractions (yam, mind; jiam, thank).
We find class affiliation in the case of nouns, adjectives, numerals as well as personal, possessive and relative pronouns which, with the exception of numerals, are marked by a class suffix. The classes themselves are named here after the personal/possessive pronouns: 1. wa/ba, 2. di/nga, 3. ka/si, 4. ku/ti, 5. bu/-.
Examples of noun-classes:
class indef. Sing. def. Sing. indef. Plural def. Plural
The class markings of the personal/possessive (1), indefinite (2) and interrogative pronouns (3) as well as the numerals (4) are shown in the following table.
Class 1 2 3 4
Sing. (one)
I wa -wai wan(a) wanyi
II di -dii din(a) dinyi
III ka -kai kan(a) kanyi
IV ku -kui kun(a) kunyi
V bu -bui bun(a) bunyi
Plural
(two)
I ba -bai ban(a) baye
II nga -ngai ngan(a) ngaya
III si -sii sin(a) siye
IV ti -tii tin(a) tiye
Adjectives
Most adjectives belong to one of the nominal classes and do not change their class under the influence of a governing noun. Other adjectives can adopt the suffixes of nearly all classes of the governing noun, e.g. bi-yogsik (a wet child), zu-yogsuk (a wet head), ni-yogsing (a wet hand).
In the definite forms and the plural of noun-adjective combinations, only the adjective is marked by its own definite or plural suffix, e.g. nur fiik (a small man), pl. nur fiisa (small men).
Syntax
The sentence order is subject-verb-object. Adverbs may be placed in an initial, medial or final position.
Subordinate clauses can contain a conjunction following the subject, e.g. dan (if, when), daa (when), ate (that, so that; consecutive), ain or ayen (that; often after verbs denoting the idea of speaking).
Without a conjunction, the temporal subordinate clause in the past is marked by the particles (le...la), e.g. Mi le pilim chien la, n nya ti kowa (When I was coming back, I saw our father). Tenses: The past is either marked by an adverb (e.g. daam, in the past) or by tonal arrangements. The future tense is indicated by adding ‟le‟ following the subject (Mi le jam. I will come.)
Serial verb constructions are very common.
Adjectives follow the noun in its root-form (e.g. ba-nubi, female dog; root form of dog: biak). They cannot stand alone in a predicative position, e.g. ‟The land is good‟ = Tengka ka teng nalung (or, by use of the verb nala, 'to be good': Teng nala.).
Some nouns, most of which refer to parts of the body, are used to denote the idea of postposition, e.g. zuk (lit. head, transl. on, over), noai (lit. mouth, transl. at, on, near), nying (lit. body, transl. on, over).