Ⅰ. police 常用作復(fù)數(shù)，其后不加-s. 如：
① The police are on duty. 那些警察在值班。
Ⅱ. policeman “警察”與police 同意。其復(fù)數(shù)形式為policemen. (policewoman→policewomen) .但表一個(gè)警察時(shí)，應(yīng)說(shuō)：one / a policeman. 而不說(shuō)：one / a police.
① The police are on duty. 那些警察在值班。
Ⅱ. policeman “警察”與police 同意。其復(fù)數(shù)形式為policemen. (policewoman→policewomen) .但表一個(gè)警察時(shí)，應(yīng)說(shuō)：one / a policeman. 而不說(shuō)：one / a police.