hear sb do中的sb必须是宾格吗?如果是主格呢?

hear sb do中的sb必须是宾格吗?如果是主格呢? hear sb do hear sb doing区别 hear sb do 和hear sb doing 差别 Hear sb to do sth 和 hear sb doing sth hear sb doing ,hear sb do ,hear sb to do（有这样的吗?）区分 有没有 hear sb to do sth hear sb dong sth/do sth 怎样区别hear sb.do sth与hear sb.to do sth的用法? 如何区分hear sb do 与 hear that 从句 hear that 和hear sb do/doing 有什么区别? hear to do和hear sb.doing这些短语对吗 造句：hear sb do sth .look at sb do sth.make sb do sth .notice sb do sth .observe sb do sth . 英语中的sb,do,doing, 英语中的sb do doing watch/see/hear+sb+do sth 和watch/see/hear+sb+doing sth 是hear　sb to do sth 还是hear sb doing sth hear sb do sth 和 hear sb doing sth 有什么区别? 恩 hear sb doing sth hear sb do sth 怎么造句啊