C．不定式的完成式
  不定式的完成式表示的动作在谓语表示的动作之前发生。
  I'm sorry to have lost your key.我很抱歉把你的钥匙弄丢了。
  I meant to have finished my work last night, but I didn't feel very well.我本来想昨晚完成工作的，但是我感觉身体不舒服。
  It has been an honor for me to have been invited to your country.对我来说，被邀请来你们国家是一件很荣幸的事情。

D．不定式的完成进行式
  不定式的完成进行式表示的动作在谓语之前发生并且一直进行着。
  He was said to have been living in London for twenty years.据说他在伦敦一直住了20年。
  I'm sorry to have been interrupting you.很抱歉，我一直打扰你。
  比较：
  不定式的时态意义。
  He is said to be studying abroad.据说他正在国外读书。（不定式的进行式表示动作正在进行）
  He is said to have studied abroad.据说他在国外学习过。（不定式的完成式表示动作已经结束）

E．不定式的被动形式
  当不定式逻辑上的主语是这个不定式表示的动作的承受者时，不定式一般要用被动形式。不定式的被动形式根据其与谓语动作发生的先后关系，有一般式和完成时两种。

  1．一般式to be done
  These are the books to be given out to the students.这些是要发给学生的书。
  He asked to be sent to the place where he was most needed.他要求被派往最需要他的地方。
  2．完成式to have been done
  The novel is said to have been translated into many languages.据说这部小说已被译成多种语言。
  He appeared to have been questioned for many times.看起来他已经被询问过很多次了。

  F.不定式的否定形式
  不定式的否定形式由not或never加不定式构成。
  We decided not to go out because of the bad weather.由于天气不好，我们决定不出去。
  Never to have made any mistake is impossible.从不犯错是不可能的。
  注意：谓语动词的否定和不定式的否定不同的意义
  I did not promise to wake him up.我没有答应叫醒他。
  I promised not to wake him up.我答应了不叫醒他。