定语从句复合句分成两个简单句!1.Have you ever been to Shanghai,which i left

定语从句复合句分成两个简单句!
1.Have you ever been to Shanghai,which i left years ago?
2.He has left Beijing,where a meeting is to be held.
如：Mr.Herpin is one of the foreign experts that are working in China.
分成：Mr.Herpin is one of the foreign experts.
Mr.Herpin are working in China.
原谅我英语很烂.