牛津高阶里的解释,看糊涂了,不可数怎么还用a?coal/kəʊl;NAmEkoʊl/n牛津高阶里的解释,看糊涂了,不可数怎么还用a?coal/kəʊl;NAmEkoʊl/noun1[U]ahardblackmineralthatisfoundbelow

Question

牛津高阶里的解释,看糊涂了,不可数怎么还用a?coal /kəʊl; NAmE koʊl/ n
牛津高阶里的解释,看糊涂了,不可数怎么还用a?
coal /kəʊl; NAmE koʊl/ noun
1 [U] a hard black mineral that is found below the ground and burnt to produce heat 煤:
I put more coal on the fire.我往火里再加了些煤.
a lump of coal 一块煤
a coal fire 煤火
a coal mine 煤矿
the coal industry 煤炭工业

Answer 1

亲,不可数名词如果要表示数量,比如一张纸（纸不可数）,一杯水（水不可数）是可以用a的...