help 后可不可直接加do

help的用法：
(1).vt.帮助,通常用help sb.with sth.或help sb.(to) do sth.形式.
如：
Can I help you?我能为你效劳吗
Would you like me to help you?要我帮忙吗?
We are going to help Mrs.Li (to) clean the house.我们要去帮李太太打扫房间.
They helped me with my lessons yesterday.昨天他们帮我做功课.
(2).vt.敬(客人),给……夹菜(或斟饮料等),如：
May I help you to some more fish?再吃些鱼好吗?
Please help yourself to the fruit.请吃水果.
(3).n.帮助
Thank you for your help.谢谢你的帮助.
I'm going to ask for his help.我将请求他给予帮助.
You were a great help to me.你对我有很大的帮助.
It wasn't of much help to me.这对我没有多大帮助.

常考的就是两个：
help sb. do sth
help sb. to do sth
都是一个意思。帮助某人做某事

help sb. (to) do sth. to可以省略的。即可加可不加。 I helped you do this. I helped you to do this. 这两个对。 help sb to do

可以 do或者to do

help 在主动语态中其后加动词时即可加do 也可加to do，但是在被动语态中必须用to do.

不可以直接加do，要用help sb do sth

help 后面可以直接用原型（do)或者不定式(to do)都可以的