摘要：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.

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