()the answer,she sent a second e-mail to the company for further information.为什么要填Not having received,而不是not receiving?求讲解

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()the answer,she sent a second e-mail to the company for further information.为什么要填Not having received,而不是not receiving?求讲解
()the answer,she sent a second e-mail to the company for further information.
为什么要填Not having received,而不是not receiving?求讲解

()the answer,she sent a second e-mail to the company for further information.为什么要填Not having received,而不是not receiving?求讲解
这里之所以要用Not having received,而不是not receiving,
是因为receive和send之间存在明显的时间先后关系,
从句子的意思不难判断,肯定是receive在前,send在后,
这里send用了一半过去时态,所以receive就应该用完成时态,
这里用了现在完成进行时,表示原因了.
明白了吗?

Not having reveived the answer, =Because she had not reveived the answer
这个现在分词状语动作发生在谓语动作sent之前,所以用完成式来强调动作的先后。
如果用not receiving,就表示几乎同时发生了。
如:
Having seen the film many times, she di...

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Not having reveived the answer, =Because she had not reveived the answer
这个现在分词状语动作发生在谓语动作sent之前,所以用完成式来强调动作的先后。
如果用not receiving,就表示几乎同时发生了。
如:
Having seen the film many times, she didn't want to go to see it again.

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因为sent是过去式,分词短语应该用过去完成时。