may have been 和may have done的区别,特别是may have been doing和may have done的区别,

题目

may have been 和may have done的区别,特别是may have been doing和may have done的区别,
他们都表对过去推测啊?

答案

may have been推测过去可能处于某种状态may have done 推测过去可能干过.may have been doing推测过去可能一直在干.He may have been a teacher as a young man ; he is good at teaching his kids .He may have los...