第1种问路方式，excuse me，where is the post office？

第2种问路方式，pardon me? Can you tell me the way to the post office？

第3种问的方式，excuse me, could you tell me how to get to the post office？

第4种问的方式，excuse me, which is a way to the post office？

第5种问路方式，excuse me，could you tell me how I can get to the post office��。