have been doing有这种用法的词组吗?有什么句子结构含义?

来源：学生作业帮编辑：神马作文网作业帮分类：英语作业时间：2024/11/13 00:45:35

现在完成进行时
含义：过去时间里开始、并持续到现在,一直在进行的（或刚结束的）动作或状态.
构成：have/has been doing sth.或 have/has been + v.-ing
例句：I have been working for 12 hours.我已经工作了12小时了（刚结束了工作,或者还正在做并将继续）.

have been doing有这种用法的词组吗?有什么句子结构含义? 有没有is said to have been doing的结构有"have+n.+(in) doing"这种用法吗?比如have trouble in doing或者have dif have been doing 的用法, have有什么用法,诸如have doing sth 之类的 start （begin) doing有这种语法结构吗?表示什么? 有want doing sth这种用法吗有because doing sth.这种用法吗? 有help doing sth 这种用法吗? help with doing 有这种用法吗? have been on 跟 have been doing有什么区别吗? have no mean in doing sth有这种用法么?