是不是只有非谓语动词中只有完成时态才有被动、、那为什么有时用been而有时不用啊、 Lost in the mountains for a week,the two students were finally saved by the local police.

问题描述:

是不是只有非谓语动词中只有完成时态才有被动、、
那为什么有时用been而有时不用啊、
Lost in the mountains for a week,the two students were finally saved by the local police.

不是
几乎所有的都有被动
如 Being taken in his mother's arm,little Lilei is looking at her.
小李雷被抱在他妈怀中的时候,眼睛在看着她.