Do you have it in extra large？

A    Can I try that jacket， please？  The red one.

A    我可以试试那件夹克吗？红色的那件。

B    Here it is.  We also have it in black.

B    给您。我们还有黑色的。

A    Mmm.  It's OK， perhaps a little tight.  I'm not sure if it really fits.

A    呣。这件不错，但是可能有点紧。我不太肯定它是否合身。

B    Is it too small？ Do you need a larger size？

B    它太小了吗？您需要大一号的吗？

A    Yes， I think so.  Do you have it in extra large？

A    是的，我想是这样。你们有特大号的吗？

B    Yes， I'll get you one in XL.

B    是的，我这就给您拿一件XL号的。

Notes                    

1 When you are shopping for clothes， you often ask： Can I try . . . ？/ Can I try . . . ？ e.g.： Can I try that jacket， please？ / Can I try that jacket， please？当你购买衣服时，你经常要问：Can I try . . . ？ / 我能试试 . . .吗 ？ 例如： Can I try that jacket， please？ /我可以试试那件夹克吗？

2 Also， you can describe how an item of clothes fits in several ways， e.g.： It's a little tight / It's a little tight； It's too small / It's too small.你还可以用多种方法描述某件衣服是否合身，例如：It's a little tight / 有一点紧： It's too small /太小了。

3 You can say extra large / extra large， or just say the letters： X - L / X- L你可以说extra large /特大的，或者仅仅说出字母：X - L / X- L