could you please tell me where you are from

你能告诉我你来自哪里吗？

could“can”的过去式; 能够，打算; 用于假设语气的条件句; 用于虚拟语气的结论句

please请; 讨好; 使高兴; 使满意; 讨人喜欢

where you are 你在哪里