Mozhgan Amiri - English Department, Amin Institute of Higher Education, Fooladshahr, Iran
Maryam Farnia - English Department, Payame Noor University, Iran
Masoud Saeedi - English Department, Payame Noor University, Iran

The current study aimed at comparing the use of discourse markers (DMs) in Four Corners(FCs) and The ILI English Series (ILI) as English as a foreign language (EFL) textbooks developed by native and nonnative (Iranian) authors,respectively.To this end, the conversationsections of FCs 2 and ILI Elementary 3 (ILI E 3) were analyzed in terms of the types and functions of DMs and their frequencies based on functionalparadigm of DMs proposed by Fung and Carter(2007). The results ofchi-square analyses showed that the use of discourse markers was significantly different in both corpora. Moreover, the findings indicated that interpersonalfollowed by referential were the most frequent DMs applied in these books. However, no considerable difference was observed with regard to referential DMs. It is hoped that the findings can be beneficialfor EFL materials developers, teachers, and learners

Materials Evaluation, Discourse Markers, Four Corners 2, ILI English Series