留学出行时，以下是一些常用的英语口语表达：

问路

Where can I catch a taxi？

Is this the bus that goes by the mall？

Can you tell me how to get to the railroad station？

交通方式

How much extra do I have to pay for that？

When you're ready to get off, remember to press the button near your seat.

Get me off at the Fifth Avenue.

礼貌用语

Good morning/afternoon. How are you today？

Nice to meet you.

Thank you for coming to this interview.

购物与结账

How much does this item cost？

I'll take this one. Where can I pay？

其他实用表达

Here you are. You can keep the change.

My seat在哪里？

Can I put my baggage here？

Could you change my seat, please？

May I recline my seat？

I'm sorry for the inconvenience.

Thank you so much for your help!

I'm sorry, but I don't understand.

Could you help me buy something？

Let's go to the park, shall we？

这些表达涵盖了出行过程中可能遇到的主要场景和需求，希望对你有所帮助。