00418nam a2200121 a 450000500170000000800410001704100080005810000190006624500570008526400320014230000080017450001140018220260717091734.0260717s2000    ii            000 0 eng d  aeng1 aLeech,Geoffrey12aA Communicative Grammer of English /cLeech,Geoffrey 1aNew York :bLongman,c2000.  a423  aBased on A grammar of
 contemporary English by Randolph Quirk, Sidney Greenbaum, Geoffrey Leech, Jan Svartvik