What'll it be?来点儿什么？ /您要点什么？
A: Hi, guys. What'll it be?
大家好，要来点儿什么？
B: We'll have two beers and a shot of whiskey.
请给我们两杯啤酒、一杯威士忌。

What are you drinking?你想喝什么？ /你要喝什么？
A: I'll get you a drink. What are you drinking?
给你来杯酒吧。你要喝什么？
B: I'd like to have a dark beer.
我想喝黑啤。