have doing sth 和 have to do sth的区别

题目

have doing sth 和 have to do sth的区别

答案

根本就没有have doing sth
只有
have fun doing sth：做某事很有趣；
have trouble doing sth：做某事有麻烦
此类have + 形容词+doing,而且是省略了doing 前面的in
have to do sth 不得不做某事
两个词组意思完全不对