How much does this cost? 

我喜欢这个。 

I like this. 

我要买这个。 

I would like to take this one. 

有没有别的颜色？ 

Do you have any other colors? 

我可以试穿这个吗？ 

May I try this on? 

你可以算便宜一点吗？ 

Can you cut me a deal? 

我可不可以用信用卡付帐？ 

Can I pay by credit card? 

在哪里可以换钱？ 

Where can I change money? 

你们几点营业/打烊？ 

What time do you open/close? 

我要买这个礼物送给我朋友。 

I'm looking for a gift for my friend. 

请帮我把这个包起来。 

Please wrap this for me. 

谢谢，可是我只是看看。 

Think you but I'm just looking.