It's the objective case of they.

they的宾格。

In formal writing, yes, when it's appropriate, when you need the object pronoun, sure, use " whom" !

在正式的写作中，在适当的时候使用，当你需要宾格的时候，当然要用 whom！

" Whom, not who, your Highness, " said Doctor Cornelius. " Perhaps it is time to turn from History to Grammar."

“应该用宾格的‘谁’，不主格，王子殿下。”克奈尔斯博士，“也许我们该结束历史课，开始学习语法了。”

Bingley was the principal spokesman, and Miss Bennet the principal object.

宾格莱主要的发言人，班纳小姐主要的对象。

I am not particularly speaking of such a case as you have supposed about Mr. Bingley.

我并不你对宾格莱先生的想象。

She is a very great favourite with some ladies of my acquaintance, Mrs. Hurst and Miss Bingley.

她我认识的一女士，赫斯夫人和宾格利小姐的宠儿。

She endeavoured to persuade herself that she did not regret it; but she could no longer be blind to Miss Bingley's inattention.

她努自己，她并不后悔;可她再也不能对宾格莱小姐的漫不经心视而不见了。

So Jack relies on help from Max, a seven-year-old English Springer Spaniel who's an expert in sniffing out a telltale sign of a koala's presence.

所以杰克依靠一条英国英国史宾格犬的帮助，它叫马克斯，今年七岁，能够嗅探到考拉存在的专家。

Miss Bingley's eyes were instantly turned towards Darcy, and she had something to say to him before he had advanced many steps.

宾格莱小姐的眼睛立刻转向达西，在他向前走了好几步之前，她还有话要对他。

Liberman says that researchers looking at COCA found that " me and someone" is " about three times more common than 'someone and me.' "

利伯曼，研究人员研究美国当代英语语料库发现，“（宾格）我和某人”在使用中的常见频率“某人和我（宾格）”的三倍。

We use 'tell' without a personal object in a few expressions, that are kind of fixed expressions like tell the truth, tell the time and tell the difference.

用Tell的时候，一般带人称的宾格，只在少数固定表达中不会用到，如， tell the truth讲实话, tell the time看时间 和tell the difference出差异。

Not only is the preposition before the relative pronoun, but the speaker has used " whom" , which is an object form of " who" and is also formal.

不只因为介词在关系代词前面，还因为话者用了 “whom”，它 “who” 的宾格形式，而且很正式。

" cried Mrs. Bennet, as she stood at a window the next morning, " if that disagreeable Mr. Darcy is not coming here again with our dear Bingley!

“第二天早晨，班纳太太站在窗前喊道，”如果那个讨厌的达西先生不和我们亲爱的宾格莱一起再来这里就好了！

To the civil enquiries which then poured in, and amongst which she had the pleasure of distinguishing the much superior solicitude of Mr. Bingley's, she could not make a very favourable answer.

对于随后涌入的民间询问，她有幸地分辨出宾格莱先生的关怀要高得多，她不能做出一个非常有利的回答。

He addressed himself directly to Miss Bennet, with a polite congratulation; Mr. Hurst also made her a slight bow, and said he was " very glad; " but diffuseness and warmth remained for Bingley's salutation.

他直接对班纳小姐了一句礼貌的祝贺。赫斯先生也向她微微鞠了一躬，并他“非常高兴”。但宾格莱的问候仍然弥漫和温暖。

Were it for nothing but his love of you, I must always have esteemed him; but now, as Bingley's friend and your husband, there can be only Bingley and yourself more dear to me.

如果不因为他爱你，我一定一直很尊敬他;但现在，作为宾格莱的朋友和你的丈夫，我只能更珍视宾格莱和你自己了。