coal可数还是不可数？
coal可数还是不可数：当coal意思为“煤块”时，是可数名词，当coal意思为“煤”时，是不可数名词。coal可作名词和及物动词，作为名词时，意为煤、煤块；作为动词时，意为上煤、加煤给…加煤、把…烧成炭。
coal的基本含义及用法介绍
1、可作名词，意为煤;(尤指燃烧着的)煤块。
例句：I put more coal on the fire.
我往火里再加了些煤。
A hot coal fell out of the fire and burnt the carpet.
一块燃烧着的煤块从火炉里掉出来把地毯烧了。
Gas-fired electricity is cheaper than coal...
天然气发电比煤便宜。
The iron teakettle was hissing splendidly over live coals...
煤火烧得正旺，上面的铁茶壶嘶嘶地响个不停。
Coal fell out of the fire, and burned the carpet.
炉火中迸出的煤块烧着了地毯。
2、还可作动词，是及物动词，意为上煤;加煤给…加煤;把…烧成炭。
例句：He is piling coal on a fire.
他正在往火上添煤。
Many ships stopped here to take in coal.
很多船只在这里停泊上煤。
The ship called at Boston to coal.
船停靠在波士顿上煤。
Ships coal at Gibraltar.
船在直布罗陀上煤。
Natural gas is the third largest source of energy after coal and oil in the world.
天然气是世界上继煤和石油之后的第三大能源。
Coal piles on the Zinc mine is like an fairyland for children.
炼锌矿上的煤堆是孩子们的乐园。
We're going to be shovelling coal on this ship for ever!
我们将永远在这搜船上铲煤！
