Mary is private secretary to the company chairman.
玛丽是公司董事长的私人秘书。
He was the then secretary of Defense.
他是当时的国防部长。
请采纳答案，支持我一下。

represent [,repri'zent]
vt.
代表；象征；表示：
例句： This mark represents a village.
这个符号表示村庄。
His opinion represents that of the majority.
他的意见代表大多数人的意见。
描写；描绘；表现：
例句： She represented her little brother as a simpleton.
她把她的弟弟描绘成一个傻瓜。
This painting represents the end of the world.
这张画描绘的是世界的末日。
陈述；阐述；指出；主张：
例句： Let me represent my ideas to you in another way.
让我用另一种方式向你说明我的想法。
体现；反映：
例句： This photograph represents my childhood.
这张照片反映了我的童//www.souquanme.com年生活。
演出；扮演：
例句： He represented Hamlet several times.
他扮演过几搜趣网次哈姆雷特。
意味着；相当于：
例句： A salary rise of 10% represents an annual increase of $3,600 for the clerical staff.
薪金提高10%对一般做文书工作的职员来说相当于全年收入增加3 600美元。
作为…代表(或代理人)：
例句： The chief engineer was represented at the meeting by his secretary.
总工程师的秘书代表总工程师参加了会议。
代表…发言(或行动IrjCh)：
例句： He represented to the press conference that the government was to be reorganized in the near future.
他代表政府在记者招待会上宣布政府不久将进行改组。
vi.
代表；代理
提出异议；提出抗议
短语:
represent something to oneself 想像出某事物
represent… to be (常指错误地)声称…是…

举几个例子：
(1)I am going to be a doctor
(2)I am going to be a teacher
(3)I am going to be a musician
(4)I am going to be a piayer
(5)I am going to be a boss
(6)I am going to be a reporter。
(7)I am going to be a composer(作曲家)
(8)I am //www.souquanme.comgoing to be a secretary（秘书）
(9)I am going to be a Scientist（科学家）
(10)I am going to be a Astronaut（航天员）
（11)I am going to be a philosopher(哲学家）
祝进步。

为你解答。
1、我下次就把自行车还给你。
I will give the bike back to you next time.
2、老师将给我们讲一个有趣的故事。
The teacher will tell us an interesting story.
3、请经常给我们发电子邮件。
Please send emails to us as often aIrjChs possible.
4、我们已给他买一一份精美的礼品。
We have bought an exquisite gift for him.

5、她正在给她的男朋友打电话。
She is calling her boyfriend on the phone.
6、我已经把申请书交给了秘书。
I have given my application form to the secretary.
7、他给我解释了这道难题。
He has explained the problem to me.
8、请为老板叫辆出租车。
Please call a taxi for the boss.
9、我将问他很多问题。
I will ask him a number of questions.

They won the victory finally.
She is my secretary.
He separated the boys from the girls.
He is always well behaved.
Mr. Brown has been selected President of the country.