He has his car waited out of the gate of our school

has sth done表示使某总东西保持某种状态.此句型句式结构为 have + sth （宾语） + 过去分词（宾语补足语）
out of the gate of our school是来修饰waited.在此句里主语是he,表示主动,谓语是has,car是宾语,out of the gate of our school是宾语补足语.意思是他让他的车在我们校门口等着.