你能帮我把日元换成美元吗？
Can you change yen to dollars?
（你能帮我把日元换成美元吗？）
Yes. We’re at your service.
（可以， 给我吧。）
change “交换”、 “兑换”。
at one’s service是“为……提供服务”、 “按照……吩咐”的礼貌表达方式。
Would you exchange this yen for dollars?
Can you exchange yen for dollars?
I’d like to exchange yen for dollars.
你能把这个兑换成美元吗？
Can you change this into dollars?
（你能把这个兑换成美元吗？）
Are big bills OK?
（面额大些没关系吧？）
Can you ...? “你能……吗？”， 表示拜托。change “兑换”、 “换开零钱”。
bill “纸币”、 “钞票”。
Can you exchange this for dollars?
May I have this in dollars?
May I have dollars for this?
I’d like to change this into dollars.
今天的汇率是多少？
I think I’ll change my money.
（我想换钱。）
What’s the exchange rate today?
