saying his grandama would come seen him是修饰a letter的,作它的定语;但saying与his中间省略了that,saying作letter的宾补,而his grandama would come seen him是saying的同位语。我是这么理解的...
第2个回答 2010-12-19
peter received a letter (which/that)saying his grandama would come to seen him
peter received a letter是主句。 (which/that)saying his grandama would come to seen him是which/that引导的宾语从句,修饰letter,但省略了which/that这个引导词