have been study 为什么不说have studied ,have been absent 为什么不说have absented1 have been study 和 have been absent最常见到,既然不是被动语态(主语是人),为什么不直接用have + 动词过去分词的形式呢?2 have absented 我也看到过 不知道和have been absent 有什么区别(study和absebt在这都不做动词用了这我知道,我就是不知道为什么要这么用,是习惯用法吗?)3 另外 how long has she been study与 how long has she been studying只有语境上去区别对吧,意思都是一样的,用studying强调还会继续学习下去,但是study在这也暗示会继续学习下去吧.

问题描述:

have been study 为什么不说have studied ,have been absent 为什么不说have absented
1 have been study 和 have been absent最常见到,既然不是被动语态(主语是人),为什么不直接用have + 动词过去分词的形式呢?
2 have absented 我也看到过 不知道和have been absent 有什么区别(study和absebt在这都不做动词用了这我知道,我就是不知道为什么要这么用,是习惯用法吗?)
3 另外 how long has she been study与 how long has she been studying只有语境上去区别对吧,意思都是一样的,用studying强调还会继续学习下去,但是study在这也暗示会继续学习下去吧.