[誤] We are interested in world affair now.
[正] We are interested in world affairs now.
注:affair 指與公眾有關的“事務”時,須用復數(shù)形式,所以誤句中的world affair 須改為 world affairs。另外, current affairs(時事),foreign affairs(外交事務),affairs of state(國事)等,也都用復數(shù)形式。在指“(關系到某個人的)事”時,用單數(shù)。在指某一事件時,用單數(shù),在 have an affair with sb.(與某人私通)這個固定詞組中用單數(shù)。