哪些词后跟动词原形 举个例子 如did do 什么的

help sb do sth
would you please do sth?
let sb do sth
make sb do sth
had better do sth

助动词之后用原型动词，助动词有do，does。did，can，must等（你自己去查查，我只是提示一下），和不定式to+原型动词

情态动词
must shall should can could may might 还有 need dare 做情态动词的时候.
to后面也有时候跟原型啊.
will后面一般也跟原形啊.
助动词在强调句子里面 I did see him.I do like Tommy.
助动词在否定句子里面 I didn't see him.
想起来,其实跟动词原形的还是挺多的.
er.只有do形式的才叫做原形