麻烦帮我分析一下英语定语从句的句子成分并还原定语从句,下午急用

麻烦帮我分析一下英语定语从句的句子成分并还原定语从句,下午急用
1.St Petersburg is a very beautiful city.It was once called Leningrad.
2.I remember the soidier.He told me not to tell anyone what I had seen.
3.The soldiers moved the boxes to a mine.They wanted to hide them.
4.Xi`an is one of the few cities with city walls.Its walls remain as good as before.
5.Shaanxi Province is a place with many cultural relice.They are well looked after.
分析一下英语定语从句的句子成分