_ a reply,he decided to write again.为什么是not having recieved,而不是not recieving?

问题描述:

_ a reply,he decided to write again.为什么是not having recieved,而不是not recieving?

have recieved 是完成时.没有收到回复,是已经发生过的事情,所以要用完成时.
希望采纳