paper money是可数名词吗

paper money是不可数名词；paper money n.纸币;钞票；

例句

Being paper money, it rotted away mighty fast.

由于是纸币，所以烂得很快。

When was paper money in use in China?

中国什么时候开始使用纸币？

Paper money also took him by surprise, since it was not yet in use in the West at that time.

纸币也让他大吃一惊,因为当时西方还没有使用纸币。

Shoppers in the UK are spending less money on toilet paper to save money, research has shown.

研究发现，英国的消费者们为了省钱在厕纸上的花费日趋减少。

This is the first example we have of paper money.

这就是最早的纸币。