可数名词有复数形式,而不可数名词一般没有复数形式。
1.2. 可数名词前可以直接用不定冠词修饰,而不可数名词前不可以直接用不定冠词修饰。3. 可数名词可以在前面直接加数词表示数量,而不可数名词不能直接在前面用数词表示数量,若要表示数量需要用a piece of之类的结构。4. 可数名词前可用 each, either, neither, another, these, those, both, (a) few, several, many, a great / good many, a large number of, scores of, dozens of等修饰,但不可数名词前不可用这些修饰语;不可数名词前可用(a) little, much, a bit of, a great deal of, a large amount of等修饰,但可数名前不能用这些词修饰;不过,可数名词和不可数名词前均可用some, any, half, most, all, a lot of, lots of, plenty of, a large quantity of, quantities of等修饰。

【实例分析】1. He gained his ________ by ________ of famous writers. (全国卷)
A. wealth; work                           B. wealths; works
C. wealths; work                         D. wealth; works

【分析】答案选D。wealth是不可数名词,没有复数形式,排除B和C;虽然work作“工作”解是不可数名词,但指一个作家的全部“作品、著作”解时通常用复数形式。

2. I need ________ cloth, for I’m hoping to make ________ clothes. (上海卷)
A. a lot of; many                        B. much; much
C. many; many                          D. many; a lot
【分析】答案选 A。cloth作“布(料)”解是不可数名词,不可数名词不能用料many修饰,排除C和D;clothes是只有复数形式的可数名词,不能用much修饰,排除B。