Customs officer为什么大写

Customs officer为什么大写 customs officer They are Customs officers中的Customs,为什么开头要大写? 海关 是custom 为什么海关官员是customs officer 为什么要加s? customs officer是什么意思?我查了下,customer officer是客户主任,customs officer是不是海关工作人员? Are you a Customs officer?变复数形式怎么变 he was rude to the customs officer,()of course made things even worse为什么用which,为什么不用whom呀?翻译成他的行为变得更糟啊,也说得通啊. What’s his job?-He’s an_________________.(Customs officer/office assistant） they are Customs officer.就划线部分提问.划线部分为海关官员 customs customs customs表示海关需要大写吗什么时候需要大写,什么时候不用? he was very rude to the customs officer,()of course made thingseven worse.What b.whom c.W1.he was very rude to the customs officer,()of course made thingseven worse.A.What b.whom c.Whose d.Whose 请问I am an officer of Shanghai Customs这种表达方式对吗?还是应该用所有格形式呢?或者说两种都对? is there a problem with the customs officer语法小白,请帮我分析下这句的句子成分 元音辅音不分,He is a customs officer .他是一个海关官员 下边是追问He is a customs officer .他是一个海关官员He is a quarantine officer .他是一个检疫官员He is a immigration officer .他是一个移民官员That’s a c 请教几道简单的英语选择题请帮忙选择,还有解释为什么选择这个选项1.he was very rude to the customs officer,( )of course made things even worse.A who b whom c what d which2the little village hasn't changed much( )a new road 为什么math不大写