_______a reply,he decided to write again.A.Not receiving B.Receiving not C.Not having received D.Having not received
问题描述：
_______a reply,he decided to write again.
A.Not receiving B.Receiving not C.Not having received D.Having not received
答
_______a reply,he decided to write again.
还未收到回信，于是他决定再写一封信。
A.Not receiving B.Receiving not C.Not having received D.Having not received
前面应该用完成时，表示一种结果！
原因状语从句放句首时候，其否定词前置 not having reveived
答
C.Not having received ,现在分词的完成式,表示这个动作发生在to write again之前做原因状语
答
因为句子没有主语,不是祈使句的话或特殊句子,用doing,所以是having,为什么用完成时态呢?因为没有受到回复,他决定再写一封,这个没有受到回复的事情对现在他的行为造成了影响,所以用have.这种情况下,not在动词前面.