“…Due to its importance, metadiscourse markers have been investigated in various genres including research articles (e.g. Abdi 2009, Afros & Schryer 2009, Dahl 2004, Gillaerts & Van de Velde 2010, Gholami & Ilghami 2016, Mur-Dueñas 2011, students' writings (e.g. Cheng & Steffensen 1996, Crismore, Markkanen & Steffensen 1993, Hyland 2004a, Intaraprawat & Steffensen 1995, textbooks (e.g.…”