物质名词前冠词的用法
1.物质名词(water, air等)在用于一般意义时不加冠词:
Water boils at 100 centi degree.
水在摄氏100度沸腾。
We can't live without air.
没有空气我们就不能生活。
They make high—quality steel.
他们制造优质钢。
Snow covered the ground.
地上被白雪覆盖。
2.指该物质特定部分时可加定冠词:
The air(in the room)is bad.
(屋里)空气不好。
The water isn't very clean.
这水不太干净。
Don't stand in the rain.
别站在雨里。
Wipe off the dust.
把灰尘擦掉。
3.有时物质名词前还可加不定冠词,表示:
1)“一种”:
Marble is a precious stone.
大理石是一种珍贵的石料。
It was a special tea which tasted of chrysanthemum.
这足一种菊花茶。
2)“一场雨雪”:
What a heavy rain.
多大的雨呀。
It was bitterly cold.and a heavy snow was falling.
天气严寒,下着一场大雪。
3)“一份”:
A chocolate ice-cream for me!
给我一弃巧克力冰淇淋。
An iced coffee for me.
给我一杯冰咖啡。
有时一个物质名词可表示可数的东西:
I need two yards of cloth.
我需要两码布。(不可数)
He wiped the books with a cloth.
他用一块布擦书。(可数)