Having been 是什么时态

来源：学生作业帮编辑：搜狗做题网作业帮分类：英语作业时间：2024/06/17 03:06:32

Having been 是什么时态
Having been lost in the mountains for a week ,the two students were finally saved by the local police.
为什么不是 have been lost

你不要被having 的ing 迷惑住,其实就是现在完成时,只不过做了伴随状语,需要用ing形式来修饰the two students , 所以它的原形就是have been ,
原句可以改成,The two students have been lost in the mountains for a week ,the two students were finally saved by the local police.
只不过为了简便,所以第一句成了修饰成分.
明白了?呵呵

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