have been doing 的用法,My borhter has worked in that factory since two years ago 问：不是have been doing吗,为什么会是has worked,余很笨,

have been doing have done 的用法和区别 have been doing have done 的用法和区别 have been 的用法? have been done；have been doing;have been n(如friends);have been adj(如asleep)辨析,尤其been的解释have been done；have been doing;have been n(如friends);have been adj(如asleep)辨析,尤其been用法；完成时用法’被动语态用法 have been doing有这种用法的词组吗?有什么句子结构含义? have been doing 的用法,My borhter has worked in that factory since two years ago 问：不是have been doing吗,为什么会是has worked,余很笨, have been+adj的用法 have ever been 的用法? have been on的用法 have been do和have been doing的不同 has been doing 的用法看到一句话：it has been a favorite magazine sinc i was a child.has been 后面接了名词,这是属于什么时态的用法呢?是have been doing have been doing 和have done 还有had done三者的区别,用法举几个例子, have been doing ,have done 及其他现在时的用法及区别 please help me ,thanks. 英语比较厉害的 关于 have been 的用法的~have been do sth.have been doing sth.有什么区别?比如：I skated for 4 hours.和 I have been skated for 4 hours.有什么区别? Have been doing与Have been +动词过去分词的区别那么具体用法呢?该怎么区分呢?例如：Have been leaning 与 Have been leaned的区分 have been doing sth have been doing 和was doing的区别 have+do/done/doing的用法