can you tell me 和could you tell me 语气上有什么区别?

could you tell me() Could you tell me -------------? Could you tell me()? Can you tell me ( ) Could you tell me how I can get there?(同义句)Could you tell me Could you tell me if_____tomorrow Could you tell me Sure 1.Could you tell me ( could you please tell me -Could you tell me when ----? could you please tell me+ could you tell me _____________?