don't worry侧重点在于安慰别人,不要着急.事情是可以解决的.
never mind则是叫人不要去管那件事,不要放在心上的意思.
英语中其他表示“没有关系”的用法：
没关系
All Right
没关系.
Don't worry about that.
这没关系.
Never mind about that.
根本没关系.
It was nothing at all.
这没关系.
It doesn't matter.
一点儿没关系.
It doesn't matter at all.
价格没关系.
It doesn't matter about the price.
一点儿没关系.
It do not matter at all.
没关系,
thanks anyway.
可以,没关系.
Yes,that's all right.
