摘要：Introduction It is obvious that English plays an important role in today’s’world,according to and researchers such as Droeschel(2011),Crystal,(2003),Kachru and Nelson(2001)English is the most widely taught,read and spoken language in the world today.Kachru’s(1985)described a model of three circles of speakers of English:the Inner Circle(English as native language-UK,the US,Ireland,Canada,Australia,and New Zealand);

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