police和policeman的用法怎么区分.可以说两个例句吗?

police和policeman的区别? police和policeman的用法怎么区分.可以说两个例句吗? policepoliceman和policewoman的区别 policeman和police可数吗? police officer和policeman和policemen的区别?police officer和policeman和policemen三个的区别? police与policeman的区别 police officer和policeman一个意思吧 police和policeman有什么区别求教 policeman ,police officer 和police superviser三这有什么区别? 警察英语怎么写?不知有一种police 和 policeman 还有其他的忘记了 the parents are both ______(police)police和policeman 有什么区别？ 1.search 和search for在用法上的区别.the policeman searched the man but found nothing.2.the police started seartching for the missing children quickly.3.the policmen are searching for the thief.我觉得是不是表示正在进行时时用sear policeman和police有什么区别如果说 我是个警察该怎么说 policeman和body的复数 警察的英文是“policeman”,为什么警车上的英文却是“police”? the police,policeman有什么区别吗? this和the的用法this和the的意思一样..到底是怎样区分..用在哪里...例如：A policeman saw this man 还是A policeman saw the man..还有：A policeman followed this man ..还是A policeman followed the manthe 和this 是不是都 cop和police 的区别