第一句：How can I get to platform 4?

　　到4号站台怎么走？

　　A: The train leaves on platform 4.

　　火车从4号站台开出。

　　B: By the way, how can I get to platform 4?

　　顺便问一下，到4号站台怎么走？

　　A: Go through that door on your left.

　　从您左手边那个文出去。

　　B: Thank you! That's nice of you.

　　谢谢，你真好！

　　A: Not at all.

　　不用谢！

　　第二句：Which platform should I go to?

　　我应该去哪个站台？

　　A: Excuse me. Which platform should I go to?

　　打扰一下，请问我应该去哪个站台？

　　B: At platform 4.

　　4号站台。

　　询问站台的 相关表达法 还有：

　　Which platform is my train?

　　我的火车在哪个站台？