help sb do sth中有2个动词 可是语法中只能有一个动词 为什么?

help sb do sth中有2个动词 可是语法中只能有一个动词 为什么? hlep是使役动词吗?help sb do sth 还是 help sb to do sth 使役动词有哪些? help 后边接动词不定式还是动词原形?有没有help sb,do sth.help sb,to do sth,help sb.to be happy? Help sb do sth. ask sb to do sth=tell sb to do sth help sb (to) do sth would like sb to do sth,=want to do sth 造句造句各2个ask sb to do sth=tell sb to do sth 造2个句子 help sb (to) do sth 造2个句子 would like sb to do sth,=want to do sth 造2个句子 到底是help sb.do sth.还是help sb.to do sth.有什么区别? help sb to do sth.有这个短语吗?是不是只有help sb do sth? 用下列句型造句 help sb.with sth.help sb.to do sth.个造两个 help sb.do sth.还是help sb.to do sth. help sb (to) do sth中的sb可以省略吗?也就是说有help to do ,help do help to do sth和help do sth 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 help sb.(to)do 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.to do sth和 help sb with sth有什么区别 help sb with sth 和help sb （to） do sth的用法有什么区别? help sb.to do sth.和help sb.with sth有啥区别 英语中只能有一个动词,但make sb do sth中却有两个动词