1-- Excuse me. Could you help me with something?

2-- I'll certainly try.

1-- I'm looking for a nice sweater.

2-- What size do you wear in a sweater?

1-- Medium is my size for shirts and sweaters.

2-- Here's a medium. What do you think?

1-- I like it. Where can I try it on?

2-- We have a large fitting room in that corner.

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注解：

1.Excuse me打扰一下

2.certainly当然   

3.medium中号的

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译文：

1--打扰下，你能帮我找下东西吗？

2--我当然能帮你。

1--我正在找一件漂亮的毛衣。

2--你穿什么尺寸的？

1--我穿的衬衫和毛衣都是中号的。

2--这件是中号的。你认为如何？

1--我很喜欢。我去哪儿能试下衣服？

2--那边角落里有试衣间。