hear sb doing 的被动语态

hear sb doing 的被动语态 请问什么时候用hear doing什么时候用hear do?如果是hear doing 的被动语态,就不存在还原to的问题了吧? make sb do变被动是——be made to domake sth done变被动是什么hear sb do变被动是什么hear sb doing变被动是什么?为什么变法不一样呢?我问的是变成被动是什么 see sb.doing sth.变成被动语态怎么变呢? see sb.do sth.在被动语态中,要加上省略的to,那see sb.doing sth. 被动语态的by sb是什么 hear sb doing ,hear sb do ,hear sb to do（有这样的吗?）区分 think of sb as的被动语态 think sb of 的被动语态 see sb doing 的被动是什么呢? hear sb do hear sb doing区别 请问：see,watch,notice,hear,feel,observe这些在被动语态里都要还原to可watch 的 固定搭配没有to呀,是watch sb do sth keep sb doing sth 可用被动语态吗?比如keep the company being well operated? hear sb doing sth 造句 keep的被动语态keep sb doing怎么改被动语态?请例句示范另外,Mr.Li keeps us interested in Maths.可以改成:We are kept to be interested in Maths.为什么? 英语leave的用法leave sb doing被动是不是sb be left doing? hear sb do 和hear sb doing 差别 Hear sb to do sth 和 hear sb doing sth see sb.Do sth 及其被动语态