【用法点睛】knowledge指系统积累的知识是不可数名词;但若其前有定语修饰,可以与a连用。
She has a good knowledge of the English language but not much knowledge of English history. 她有丰富的英语知识,可是对于英国史知道...
[展厅一]名词类
1.这些男教师们在干什么?
[误] What are the man teachers doing?
[正] What are the men teachers doing?
[分析]在英语中,名词修饰名词,作定语用的名词要用单数形式,但当man,woman作定语修饰复数可数名...