Former is used to describe someone who used to have a particular job, position, or role, but no longer has it.
ex-
The unemployed executives include former sales managers, directors and accountants.
失业的管理人员包括前销售经理、主管和会计。
former president Richard Nixon.
前总统理查德·尼克松。
He pleaded not guilty to murdering his former wife.
他对谋杀前妻的指控作无罪辩护。
Former is used to refer to countries which no longer exist or whose boundaries have changed.
the former Soviet Union.
前苏联。
Former is used to describe something which used to belong to someone or which used to be a particular thing.
the former home of Robert E. Lee.
罗伯特·E·李的故居。
Former is used to describe a situation or period of time which came before the present one.
He would want you to remember him as he was in former years.
他希望你记住他几年前的样子。
When two people, things, or groups have just been mentioned, you can refer to the first of them as the former.
They grappled with the problem of connecting the electricity and water supplies. The former proved simple compared with the latter.
他们设法解决通电和通水问题。事实证明,前者比后者简单。
He writes about two series of works: the Caprichos and the Disparates. The former are a series of etchings done by Goya.
他就以下两组作品进行写作:《狂想曲》与《荒诞集》。前者为哥雅创作的一组蚀刻版画。
The wife may choose the former and the husband the latter.
妻子可能选择前者,丈夫会选择后者。