I've had my radio repaired so soon because my father had me do it为什么是my father had me do it ,而不是用done,不是had done

I've had my radio repaired so soon because my father had me do it
为什么是my father had me do it ,而不是用done,不是had done

have sb.do sth 是使某人做某事
have sb.done 是使人被.（表被动）

have sb. do sth. 是固定的短语，中间的do 是不能改变的，而之前的have的形式是可以变成不同的语态和时态的。