经典题型
例1Tony was very unhappy for _______ to the party.
A. having not been invited B. not having invited
C. having not invited D. not having been invited
思维解析
本题考查非谓语动词。根据题意“没有被邀请参加聚会”是unhappy的原因，发生在was之前，所以应该用动名词的完成形式。Tony与invite之前是被动关系，所以应用完成时的被动形式。动名词完成式的否定结构的正确形式应为D项。答案：D
