“…Research in other paradigms has noted the role of adverbials in temporal expression (e.g., Brindley, 1987;Wolfram, 1984), but the concept-oriented approach has clarified how central a role they play (Dietrich et al, 1995;Giacalone Ramat, 1995a;Klein, 1993Klein, , 1994Meisel, 1987;Schumann, 1987). Temporal adverbs can be further divided into four types: adverbs of position (now, then, yesterday at six), duration (for many days, all week), frequency (twice, quite often), and contrast (already, yet) (Klein, 1993(Klein, , 1994 and are also acquired in stages (Klein, 1993;Noor, 1993). The first three appear early and gradually add members; the fourth appears later (Klein, 1993).…”