a-cup aglassof和acupof
a glass of和a cup of的区别：含义不同、用法不同、强调重点不同。a glass of意为“一玻璃杯的”，是指长形状的玻璃杯子，一般没有把手，用来喝酒和果汁等；a cup of意为“一杯的量”，是指小型的、有把手的杯子，通常是做茶杯，咖啡杯来用的，还可以用做比赛用的金杯、银杯。
一、a glass of的中文含义及用法介绍
a glass of指长形状的玻璃杯子，这种杯子没有把手，用来喝酒和果汁等，一般接冷饮。
例句：She stood up suddenly, upsetting a glass of wine.
她蓦然起身，碰倒了一杯酒。
He'd knocked over a glass of water.
他打翻了一杯水。
I'm dying for a glass of water.
我真想喝杯水。
They drank a glass of wine to seal their new friendship.
他们干了一杯，交成朋友。
He drank a glass of whisky, then another and then another.
他喝了杯威士忌，接着又喝了一杯，然后又喝了一杯。
If you wish, you may now have a glass of milk
你想喝的话，现在可以喝一杯牛奶。
He asked for a glass of port after dinner.
晚饭后，他要了一杯波尔图葡萄酒。
He's quaffed many a glass of champagne in his time.
他年轻时曾经开怀畅饮过不少香槟美酒。
My favourite tipple is a glass of port.
我最喜欢喝的酒是波尔图葡萄酒。
Give him a glass of water with a dash of whisky in it.
给他一杯水，加少许威士忌。
If you feel like snacks, drink a glass of water first.
如果你想吃零食,先喝杯水。
The outside of a glass of ice water sweats on a hot day.
热天冰水玻璃杯的外面冒出水气。
二、a cup of的中文含义及用法介绍
a cup of指小型的，有把手，通常和杯垫一起的杯子，通常是做茶杯，咖啡杯来用的，一般接热饮。
例句：A cup of tea? There's nothing I'd like better!
一杯茶？那最好不过了！
Would you like a cup of tea?
你想喝杯茶吗？
Breakfast consisted of dry bread and a cup of tea.
早餐有无黄油的面包和一杯茶。
Have a cup of tea ─ unless you'd prefer a cold drink?
喝杯茶吧——除非你喜欢冷饮？
A cup of coffee finished the meal perfectly.
饭后一杯咖啡，美餐圆满结束。
She poured out her troubles to me over a cup of coffee.
她一面喝着咖啡，一面向我倾吐着她的烦恼。
She put a cup of tea down on the bedside table
她在床头柜上放了一杯茶。