have to do with与have something to do with有什么区别?

have to do with与have something to do with有什么区别?
have to do with与have something to do with都是有...有关的意思,但在具体使用上,有什么区别?另外,这里的do是不是就是固定的,不能换做其他的动词?
谢谢!
请回答者自己先搞清楚这两个词的意思再回答！
have to do with查的金山词霸也是与...有关的意思啊，例句如下
What 's that have to do with it?
那跟这有什么关系？
The president's message to congress have to do with taxes.
总统向国会提出的咨文与税有关。
What did this have to do with my daughter's wedding?
这跟我女儿的婚礼有什么关系?
have something to do with译为有...有关，例句如下：
Her diligence must have something to do with his success.
她的勤勉和她的成功一定有某些关系。
Does his visit have something to do with the meeting tomorrow?"
他这次来是不是跟明天的会议有关？”
The frost will have something to do with the high price of fruit this year.
这次霜害将与今年水果的高价格有关系。