在英语中换钱的常用表达包括：
询问兑换地点
Where is the exchange？
Where can I change some money？
请求换零钱
Change, please.
Small change, please.
May I have some change？
询问所需金额
How many dollars would you like？
How would you like the money？
What kind of currency do you want？
指定面额
You Signature here.
Please fill out this paper.
I’d like to have fifteen five-dollar bills and the rest in one-dollar bills.
I want 8 $10 bills, and the rest in small change.
询问汇率
What's the exchange rate？
支付和确认
Cash, please.
Here is the money.
Break this into 3 twenties, 3 tens and the rest in coins, please.
其他
Cash a traveler's cheque, please.
I want to change 2000 dollars to RMB, please.
If I changed 2000 RMB to Us dollars, how much would I get？
这些表达可以帮助你在需要换钱时更自信、更自然地进行沟通。