need作名词时,是用the need of还是the need for,demand呢?如题

问题描述:

need作名词时,是用the need of还是the need for,demand呢?
如题

the need for 如:
the basic human need for food.
人类对食物的基本需要.
但是有个固定短语是in need of sth.请楼主注意