1.gentleman的意思是“上等人,绅士,君子”。主要指那些出身及社会地位较上层的男士。gentleman也可指“有教养的、诚实的人”。gentleman也可指“男人,先生”,指无论人品还是操行都无可挑剔的人。gentleman还可作“富贵闲人,富绅”解,指有钱,有闲暇,有社会地位,不需要为生活操劳的人。
2.gentleman的复数形式应为gentlemen,而不是gentlemans。
3.与gentleman相对应的阴性名词是lady。
4.gentlemen可用于直接称呼一群男人。正式发言的开头可用ladies and gentlemen,女士在前; 若在非正式场合,也可使用gentlemen and ladies。
5.the gentleman('s) 在英国作“男厕所”解,用作单数。

gentleman's agreement
君子协定 unwritten agreement kept to because of integrity of the parties concerned
I've not signed contract with him but we've got a gentleman's agreement, and that's good enough for me.我没同他签订契约,但我们有君子协定,对我说来,那就够了。

If he is anything of a gentleman, he will pay the money.倘若他真是上等人,他会付这笔钱的。
A gentleman should never reflect on another person's motives unless he has good reason for doing so.绅士绝不应该怀疑别人的动机,除非他有足够的理由这样做。
A new Bluebird stopped in front of the door, and a gentleman helped a tall lady in it.一辆蓝鸟牌汽车停在门口,一位绅士搀扶着一位高个女士进入汽车。
The old gentleman was so evidently past all reason.那位年老绅士显然没有道理。
A true gentleman is above envy, jealousy or vindictiveness.真君子是坦荡而无妒忌、猜疑或报复之心的。
Please show this gentleman out.请送这位先生出去。
Not once did the gentleman mention his feeling.那位老先生从来没有提到过他的感受。
Who's the gentleman in the corner?墙角的那位男子是谁?
He is a gentleman by birth.他出身高贵。
Harry dressed like a gentleman, and lived expensively.哈里打扮得像个富绅,生活奢侈腐化。
I tell you, gentlemen, this cloth is of the finest quality.告诉你们,先生们,这种布质量最好。
Ladies and gentlemen, it is time to begin.女士们,先生们,该开会了。
Perhaps these gentlemen and ladies will allow me to offer them a glass too.这些先生们和女士们大概会允许我来敬他们一杯吧。

吴先生上个月出国了。
［误］  Gentleman Wu went abroad last month.
［正］  Mr. Wu went abroad last month.
告诉你,先生,这种布质量最好。
［误］  I tell you,Gentleman, this cloth is of the finest quality.
［正］  I tell you,Sir, this cloth is of the finest quality.
［析］  作为男人姓名前的称呼,表示尊敬之意要用Mr.,不能用gentleman。若直接称呼一个单个男子时,可用sir来代替gentleman。

［同义词］   gent, sir, esquire
［词源］  ＜中古英语＜古法语gentil(高贵,高尚的)