need to do,need doing ,need do到底有什么区别

是need do 还是 need to do need sth to do need to do造句 need的用法?need to do还是need do? need do/need to do/need doing的意思 need doing need to do 区别 什么时候用need do 什么时候用need to do?,比如need buy 与need to buy have need to do造句 动词+doingdislike+doin？+to do？ need to do sth 和need do sth的区别 need to do sth 和need do sth列句 need to do跟need do的区别? need to do 和 need do的区别 what i need to do what need i do? Everything we need to do ___(do) Do you need to do homework?why? need to do sth 和 need doing sth的区别? need to do 和 need doing的意思和区别