是He needs to do homework还是He needs to do homework?need do 与need to do的区别,needn't do 和needn't to do 的区别,详细～!
问题描述：
是He needs to do homework还是He needs to do homework?need do 与need to do的区别,needn't do 和needn't to do 的区别,详细～!
答
当need直接加动词原形时,need是情态动词,作“必须”讲
当need 后面加动词不定式时,need是实意动词,是“需要”的意思
He needs do homework 他必须做作业
He needs to do homework他需要做作业
needn't do不必
needn't to do 不需要