help sb in doing sth &help sb to do sth二者有什么区别,如何用?它们是不一样的，谁给我说出区别我问的是用法

help sb doing sth Help sb in doing sth中的in可以省略吗?. help sb do sth=help sb to do 与help sb doing sth 有什么区别?ps:还有与help sb in doing sth的区别 是不是help sb doing sth help sb doing sthhelp sb in doing sth 这两种形式都有吗, help sb doing sth和help help sb with sth,help sb for doing sth和help sb do sth 的区别? help sb to do sth 和help sb in doing sth 在意义上有什么区别 help sb do sth help sb doing sth help sb to do sth help sb with sth 四者有什么区别 英语:是不是help sb doing sth? help sb doing sth 关于 help,有 help sb doing sth 这个用法? help的用法help sb.doing sth还是help sb.to do sth help用法有没有help sb doing sth join sb in doing sth 是什么意思? sb.spend time(in)doing sth. help sb doing sth和help sb to do sth两者之间有什么区别? help sb doing sth 和help sb to do sth 有什么区别? help sb.do sth.和 help sb.doing sth.的区别是什么