Chapter Two: Literature review Introduction English as a second or foreign language has gained much attention during the past decades in almost every country. In Iran English is taught as a foreign language in high-schools as well as in universities (Mirdehghan, HoseiniKargar, Navab, & Mahmoodi, 2011). Aside from different language courses presented in different levels of public academic centers, there are also private institutes that teach different levels of foreign language