关于need的情态动词和行为动词的用法(不是很清楚)need do sth 和need to do sth ,needn't do sth和don't need to do sth ,还有need doing sth=need to be done

问题描述:

关于need的情态动词和行为动词的用法(不是很清楚)
need do sth 和need to do sth ,needn't do sth和don't need to do sth ,还有need doing sth=need to be done