“…Scholars of African languages have noticed the presence of two aspectual and tense systems (Gouffé, 1966(Gouffé, , 1967(Gouffé, , 1968Hyman and Watters, 1984;Caron, 1986 andRobert, 1991;Pawlak, 1993;Jungraithmayr, 1994 and references there;Newman, 2000 and numerous other grammars of Chadic languages e.g. Frajzyngier with Shay, 2002;Frajzyngier and Johnston, with Edwards, 2005;Frajzyngier, 2008). In some Chadic languages, tense and aspectual systems mark the distinction between pragmatically dependent and pragmatically independent clauses.…”