请问need do,need doing,和need to do的区别

请问need do,need doing,和need to do的区别 need doing need to do 区别 need do/need to do/need doing的意思 it need doing sth 还是it need do do ... need doing need to do sth 和 need doing sth的区别? need to do 和 need doing的意思和区别 need to do和need doing的区别 英语need doing和need to do有什么区别 no need doing 还是no need to do practice for ,need to do,need doing 造句 need help to do 还是 need help doing 问哈need to do和 need doing的区别? need help to do 还是 need help doing don't need doing还是don't need to do? 英语语法中,need sb sth是need sb to do 还是need sb do /doing sth? need do;need to do;need doing的区别?要例句、解释、怎么用、 need to do,need doing ,need do到底有什么区别