为什么用havebeendiscovered

更新时间2019-03-23 01:08:53

There are said to have been discovered on the very spot the remains of an ancient civilazatin为什么用现在完成时

to have been discovered 是不定式完成式的被动语态形式。

这句话相当于：

People discover that on the very spot there have the remains of a ancient civilization.

被动语态，表示过去发生的动作，用完成时

本题要从现在完成时的定义上分析。现在完成时是过去的动作对现在的影响，或持续到现在有可能还要持续