怎么判断need后加to do 或是do?

怎么判断need后加to do 或是do? need some money后加to do 还是do? do you need to do… 和need you do…?怎么区分?如何判断疑问词用do还是need? need和want什么时候后加ing,什么时候加to do need反意疑问怎么判断用do还是need seem 后加to do need to do ,need doing .would like 后加to do?这个短语怎么用? need to do造句 need sth to do Need后用To do 还是Do?a bit 和 a bit of分别怎么用?有没有Bits of? need何时为情态动词,何时加to do