ice cream可数还是不可数?用法是什么?

■其意为“冰激凌”,若视为物质,不可数.如：
I give one yuan for ice cream.我花一元钱买冰激凌.
What sort of ice cream do you want?你想要哪一种冰激凌?
Ice cream is my favourite sweet.冰激凌是我最喜欢的甜食.
Both young and old like ice cream.不论老少都喜欢吃冰激凌.
■若指“一个冰激凌”或“一份冰激凌”,则可数.如：
I want a strawberry ice cream.我要一份草莓冰激凌.
The boy has one ice-cream every day.那个男孩每天要吃一个冰激凌.
There is not much of a market for ice cream in the winter.冬天对冰激凌的需求量不大.