newspaper作为报纸时是可数名词，若不是将 newspaper 当作是供阅读或传递信息的一种东西，而只是把它当成一种“纸”来看待，也可用作不可数名词。

例句：The newspapers were full of lies. 报纸上一片谎言。A newspaper is a publication. 报纸是一种出版物。