a cup of的用法和样例：
- Would you like a cup of coffee?
- A cup of tea would be most acceptable.
- We had a quick lunch and finished up with a cup of coffee/and a cup of coffee to finish up with.
- Would you like a cup of ale?
- I'm not going there again they charged (me) 1 for a cup of coffee!
- Would you like a cup of tea?
- I refreshed myself with a cup of coffee.
a cup of的相关资料：