你的问题很有趣,我也想了一下什么时候我用复数什么时候用单数.
我查了一下,概括的很好:
chocolate (uncountable and countable; plural chocolates)
(uncountable) A food made from ground roasted cocoa beans. 不可数-当作一种食物时
Chocolate has become a favorite snack of people around the world.
(countable) A small piece of confectionery made from chocolate. 可数-一块巧克力做的糖
He bought her some chocolates as a gift.
(uncountable) A dark reddish-brown colour/color, like that of chocolate. 不可数-当作形容颜色使用时.
As he cooked it the whole thing turned a rich deep chocolate
单词chocolate 有几个意思,
1.巧克力:不可数名词
2.巧克力糖:既作可数名词,也可作不可数名词
例:a bar of chocolate
a box of chocolates
3.巧克力饮料:不可数名词
例:a mug of hot chocolate
希望有帮助。