need做情态动词和普通动词有什么区别?

问题描述:

need做情态动词和普通动词有什么区别?
he needs to telephone him
he need telephone him
he needs water
he need water
以上都正确吗?

he need telephone him 是错误的.
应该是he needs to telephone him.这是第三人称.
根本就不能说he need water
这就如have/has to一样.