I‘ll tell him to ask my permission before he goes out alone

tell sb to do sth 告诉某人做某事如果tell要跟从句得这样I'll tell him that he should ask for my permission before he goes out alone 再问： asking不能动名词做主语吗 再答： 在这个句子里不行，因为这个句子用的就是tell sb to do sth的结构