affair: suggests action or performance and may imply a process, an operation, a proceeding, an undertaking, or a transaction: the resounding success of the whole ~.


business: stresses duty or office and implies an imposed task: quality is everyone's ~.   (duty责任: 指义务与责任obligation and responsibility)   (office岗位)     (task任务: 任务指具体的责任specific duty)


concern: suggests personal or direct relationship to something that has bearing on one's welfare, success, or interests: viewed the issue as of no ~ to them.   (to have bearing on: 和...有关系,对...有影响: your credibility has bearing on your success信誉关系到成功)


matter: generally refers to something being considered or being dealt with: the one remaining ~ in dispute.  （如what is the matter什么事?）


thing: is often used when there is a desire to be vague or inexplicit: a promise to see the ~ through.


affair事务: 泛指行动或作为(如处理操作进程行动作业)，business责任: 强调责任、岗位、和任务，concern关注的事: 和个人有直接关系，关乎福利成功利益，matter事务事情: 泛指正在考虑或处理的事，thing事务事情: 当希望模糊或不明确时使用

记忆方法: 1) 首字母排列为MT ABC每天ABC三件事<==事务

         2) 事务的意思是泛指所做所处理的事mean in general terms something done or dealt with.字母排列为MT ABC每天ABC三件事<==事务