office .official.officer.officious这几个单词看起来都差不多,有没有一种巧记的方法,还有就是有些单词前后加tion.ment,或者ish .ive等为什么加这些,加了之后又变成了什么意思

official He was an __in the government__.A office,official B offical,office C officer,officeD offical,officer at,post office,the,get,off怎么连词成句 Tom hurried off in the d_______of the post office at get post off the office 怎么连成句子 get off the bus on the post office哪错啦 英语翻译Decals and striping should be in accordance with official Idealease specifications,which are available at the corporate office “official language” Official Partner official是什么意思 official意思 For official office office office office. Mr Black is an officer in the ar my not an official in the government You can not easily find him in his office这段话翻译成中文怎么说? go off to the office意思South Africago off to the officetake a walkduring the week翻译意思