1)动名词做主语谓语动词为单数 2)在动名词和不定式中,做为介词的宾语是动名词 3)动名词的否定直接在其前加否定词,通过代词的宾格或所有格形式给出逻辑主语. I would appreciate___ back this afternoon.(MET 1992) A.you to call B.you call C.you calling D.you're c...