vwop35%\rop 15% M P`> P?> x\r50% (10%) 10% 10% u 5%\r!@%\r' \r[1 ]¡¢£¤¥¦§¨©ª¥«.a=¬b/z?u®.¯°\r±²M³´ 2003 9.\rµ ¶·¸¹º»6a=¬b/*+u®.¯°±²M³\r´ 2003 9.\r¼½\r[1 ]¾¿À.ÁÂab/-ÃuÄÅÆ<~®.<Ç:ÉÊaM³´ \r2008.\r[21ËÌÀ.ab//_ÍÄÅÆ<~®.<Ç:?/²M³´ 2006.\r[3 ]ËÌÀ.ab/ÎÏÐ,ÄÅÆ Ñ ®.<Ç:?/²M³´ \r2006.\r%\r[1] A.S. Hornby.ÒÓ±ÔbÕÖ×.¯°ØÙÚÛ 2004Ü London: Oxford\rUniversity Press, 2004.\r[2 ]ÝÞß àáâ./0ãN.¯°?/äåM³´ 200L\ræ ç ã è éê.hbãNëìí.¯°?/äåM³´ 1999..\r[4 ]î ï Á .ð ãNñò.<Ç<Ç?/²M³´ 2003.\r[5 ]óôõ ö÷ø.b/ùúûüÖ×.<Ç<Ç?/²M³´ 1996..\rýþ#à«\rÿ 0@P`p?\r 2008? 11? 2 9\r