Want a cup?的用法和样例：
- Do you want a cup of tea after dinner?
- I want a cup of coffee and some cakes.
- I want a salad, a fillet steak, and a cup of orange juice, please.
- I want a hamburger, a cup of orange juice and a cake.
- Andy: I want a cup of coffee, an egg, and bread with butter.
- I want a bottle of beer. My wife wants a cup of coffee.