Can you tell me which is the way to the park?

因为which是主语，语序就是陈述语序了。例如，Who is talking to the teacher?Do you know?组成宾语从句是：Do you know who is thalking to the teacher?这里的who就是主语。还有：He asked what was the mather?
怎么样？明白了吗？祝你进步！

Can you tell me( which is) the way to the park?括号里的可以省略的，所以全写出来也是可以的，不影响别人理解句子的意思~！

该句中的宾语从句的引导词同时也是该宾语从句的主语，所以这里它其实就是陈述语气。