基础语法：表达数目和数量的特别方法
陈清霖
大家知道，不可数名词没有表示复数的“-s”标志，因此前面不可有数目字，只可以有数量词。例如我们可以说①， 不可以说②：
①There is not much furniture in the office.
②There are not many furnitures in the office.
这是不是说不可数名词就不可数呢？不然。相反的，不可数名词也是可数的，主要方法是借重单位词（unit word），如：
a piece of, a cup of, a drop of, a lump of, a handful of, a flash of, a blade of, a head of, a bar of, an ear of等。
如果数目是超过“一”，就以确实数目取代“一”。例如：
two pieces of, three cups of 和 five lumps of 等。
现在试试把上述这类单位词和适当的不可数名词连用。
① Mr Li has just bought a piece of new furniture.
② Give me a cup of cold water, please.
③ Please put two lumps of sugar in my coffee.
④ The boy picked up two handfuls of sand from the beach.
⑤ We saw a flash of lightning in the sky.
⑥ The gardener pulled out blades of wild grass from the garden.
⑦ She gave bars of chocolate to the visi