don't have to do sth 是否等于don't need to do sth 和needn't do sth

don't have to do sth 是否等于don't need to do sth 和needn't do sth
don't have to do sth 是否等于don't need to do sth 和needn't do sth

don't have to do sth 是否等于don't need to do sth 和needn't do sth
don't have to do sth
don't need to do sth
needn't do sth
一般来说是一样、并可互换的
The teacher says you don't have to do it
The teacher says you don't need to do it
The teacher says you needn't do it
异曲同工.
（这不是主观 和客观的问题.）

don't have to do sth不是必须做某事
don't need to do sth 不需要做某事
needn't do sth不需要做某事

应该不相等，因为don't have to do sth是客观说法，而don't need to do sth则是主观说法，
以上纯属个人见解哦，你还是查一下吧

don't have to do sth 不是必须做，
don't need to do sth 和needn't do sth 不必要做，没必要做