need t和don t have to的区别

问题描述:

need t和don t have to的区别

dont have to 相当于 not need to 就是说 dont have to是前者的否定

needn't 比较主观,是must的否定
don't have to 比较客观,是have to 的否定
也就是说前者是自己对自己的,而后者是别人或物致使的