Nín yào diǎnr shénme?
第十二课 您要点儿什么？
Excuse me, may I help you?

  1、要点儿什么？

要，“点儿diǎnr”即“一点儿 yìdiǎnr”，表示少量、不多的意思；“要yào”表示希望得到，后面可以接动词或直接跟宾语，在购物场所，服务人员和顾客常用它来询问和回答。
Here “点儿diǎnr” viz. “一点儿 yìdiǎnr”, indicates “a little”, “not much”. The verb “要yào” indicates “want”, which may be followed by verb or object directly. During shopping, it is usually used to enquire or answer by service staff and customers.

    例如：Ex.:

          Nín yào shénme?
  A：您 要 什 么？
          What would you like?
          Wǒ yào yì bēi kāfēi.
  B：我 要 一 杯 咖啡。
          I’d like a cup of coffee.

  2、来一杯热牛奶。

句中的“来lái”是“要yào”的意思，一般在点菜或是买食品、饮料的时候使用，多用于口语。
“来lái” in this sentence means “要yào”, usually used in oral English when ordering or buying food or beverage.

    例如：Ex.:

          Lái yì wǎn miàn.
  (1) 来 一 碗 面。
           I want a bowl of noodles.
          Lái yì pán niúròu.
  (2) 来 一 盘 牛肉。
          I want a plate of beef.