The policemen are in uniform为什么uniform不加s

There are some policemen in the building.(改为否定句) The policemen are in uniform为什么uniform不加s The policemen are in uniform.这里面为什么要加个are啊 首字母填空the policemen are s_____the building.There is a thief in it There are three _________ in the office.A.police B.policeman C.policemen D.police officer The men ----(in;with)police uniform -----(are;is)not real policemen. I can see many geese in the cake Some policemen are over there 改为单数式 There are some policemen over.what is --in the street?An accident?AhappeningBhappenedCtaking plac The policemen are trying their best to rescue the people (in danger) now.对括号部分提问 In the street I saw some __________ in the _________ car.A. policemen; policemen B. policemen; police c. police; policemen D. policeman; policeman The policemen are chasing the thief（变为被动语态） There is a policeman in the kitchen.要将 There are置于句首我这个对𣎴对There are some policemen in the kitchen. The policemen are a____ at around 5 o'clock.(初一英语) All the policemen are very ---------/breiv/ when they catch thieves . The policemen are in -------- of the stolen money everywhere.根据句意在横线上填入所缺词语,使句意完整、正确. There are six policemen standing at the school gate这是个选择题为什么用policemen而不能用police 英语翻译London police are well-known in the world.Today there are policemen everywhere,but in 1700 there were no policemen in London at all.A few old men used to protect the city streets at night and they were not paid very much.About 300 years a The policemen are (搜寻）the woods for the lost child.