导购口语:

穿多大号
We have four sizes: XL, L, M and S. what size do your want to take?
我们有四种尺寸：特大号，大号，中号，小号，您穿哪种尺寸的？
May I ask you what size you wear?
能告诉我您穿多大号的吗？
What size shoes do you take?
你穿多大号的鞋？

语句解析:
 

What size shoes do you take?中的shoes可以换成shirt, dress, blouse, suit等。即表达为：What size… do you take?这规矩话还可以说成：What is your shoes size?

情景再现:

Have you got a pair in between the two sizes?
你们又没有一双大小介于这两者之间的？
I think a large size one would fit you.
我想您应该穿大号的。
I am afraid we don’t have your size.
恐怕没有您穿的号了。
We have run out of your size in this style.
这种款式您的尺寸已经卖完了。