have something to do with 这个比较常用
例如：
"Are you implying that I have something to do with those attacks?" she asked coldly.
“你在暗搜趣网示我和那些袭击有关吗？”她冷冷地问。
What does it have to do with you? 与你何干?
If we can't afford beef, we have to do with pork. 如果我们买不起牛肉, 猪肉也行.
Does his visit have somethingAxSgIMhfu to do with the meeting tomorrow? " 他这次来是不是跟明天的会议有关? ”

have
to表客观被动，如在老师和父母搜趣网的严格督促下，I
have
to
study
hard。而must表主观主动，如我觉得自己成绩太不好了，I
must
study
hard。

have to表客观被动，如在老师和父母的严格督促//www.souquanme.com下，I have to study hard。而must表主观主动，如我觉得自己成绩太不好了，I must study hard。