having been defeated by A university team,my teammates were downcast.這里的完成時(shí)的現(xiàn)在分詞的被動(dòng)語態(tài),表示被defeat這個(gè)動(dòng)作發(fā)生在后面的動(dòng)作were downcast之前,這種時(shí)間的間隔有強(qiáng)調(diào)的意味.而如果寫成：defeated by A university team,my teammates were downcast,這里defeated這個(gè)動(dòng)作,和were downcast這個(gè)動(dòng)作在時(shí)間間隔上很近,沒有強(qiáng)調(diào)二者的先后順序.