我要 exchange 這件！

說法比一比：★★★★學校：I want to exchange it.
　　　（我想要換這件。）
老外：I'd like to exchange this, please.
　　　（我想換這件，麻煩你。）

實境對話
A：I'd like to exchange this, please.
　（我想換這件，麻煩你。）
B：Sure. Do you have your receipt?
　（好的。您有帶收據嗎？）

老外還會這麼說
ex：I'd like to exchange this for a smaller size.
　（我想把這件換成比較小號的。）
ex：I'd like to return this.　
　（我想退掉這件。）
ex：I don't want to exchange it. I'd like a refund, please.　
　（我不想換貨。我想退款，麻煩你。）