急!高一英语定语从句问题!请以which、when、where、why、whose这五个引导词造五个定语从句,要用高一上学期前六个单元的知识回答!谢谢!可追加分!

1.who指人,在从句中做主语(1) The boys who are playing football are from Class One.(2) Yesterday I helped an old man who lost his way.2.whom指人,在定语从句中充当宾语,常可省略.(1) Mr.Liu is the person (w...