both

det.

pron.

1. （与复数名词连用）两个，两个都
   used with plural nouns to mean ‘the two’ or ‘the one as well as the other’
   1. Both women were French.
      两名妇女都是法国人。
   2. Both the women were French.
      两名妇女都是法国人。
   3. Both of the women were French.
      两名妇女都是法国人。
   4. I talked to the women. Both of them were French/They were both French.
      我和两位妇女交谈了。她们都是法国人。
   5. I liked them both.
      他俩我都喜欢。
   6. We were both tired.
      咱俩都累了。
   7. Both of us were tired.
      咱俩都累了。
   8. We have both seen the movie.
      我们俩都看过这部电影。
   9. I have two sisters. Both of them live in London/They both live in London.
      我有两个姐妹。她俩都住在伦敦。
   10. Both (my) sisters live in London.
       我的两个姐妹都住在伦敦。
2. 不仅…而且…；…和…都
   not only… but also…
   1. Both his mother and his father will be there.
      他父母二人都要去那里。
   2. For this job you will need a good knowledge of both Italian and Spanish.
      担任这项工作需要精通意大利语和西班牙语。

1. DET 两个；两个都
   You use both when you are referring to two people or things and saying that something is true about each of them.
   1. She cried out in fear and flung both arms up to protect her face...
      她吓得大叫，并且抡起双臂护住了自己的脸。
   2. Put both vegetables into a bowl and crush with a potato masher.
      把这两样蔬菜都放进一个碗里，然后用捣土豆器把它们捣碎。
   3. Both is also a quantifier.
      
   4. Both of these women have strong memories of the Vietnam War...
      这两位妇女都对越南战争记忆深刻。
   5. We're going to Andreas's Boutique to pick out something original for both of us.
      我们要去安德烈亚斯礼品店为我们俩挑选一些新奇玩意儿。
   6. Both is also a pronoun.
      
   7. Miss Brown and her friend, both from Stoke, were arrested on the 8th of June...
      布朗小姐和她的朋友于6月8日被逮捕，她们两人都来自斯托克。
   8. Will there be public-works programmes, or community service, or both?
      将会实施公共工程项目还是社区服务项目，还是二者都有？
   9. Both is also an emphasizing pronoun.
      
   10. He visited the Institute of Neurology in Havana where they both worked...
       他访问了两人都曾工作过的哈瓦那的神经病学研究所。
   11. 'Well, I'll leave you both, then,' said Gregory.
       “好吧，那我就不打扰你们俩了。”格雷戈里说道。
   12. Both is also a predeterminer.
       
   13. Both the band's writers are fascinating lyricists...
       乐队的这两位作词人都是非常出色的填词高手。
   14. Both the horses were out, tacked up and ready to ride.
       两匹马都牵出来装上了马具，可以骑了。
2. CONJ-COORD 不仅…而且…；…和…都；既…又…
   You use the structure both...and when you are giving two facts or alternatives and emphasizing that each of them is true or possible.
   1. Now women work both before and after having their children...
      现在妇女在生孩子前后都要去工作。
   2. Any such action would have to be approved by both American and Saudi leaders.
      任何这样的行动都必须获得美国和沙特领导人双方的批准。

Notice that all these sentences mean the same thing: Both boys have been ill', 'Both the boys have been ill', 'Both of the boys have been ill', 'The boys have both been ill'. You cannot say 'Both of boys have been ill', although when a pronoun is used, you can say 'Both of them have been ill'. See also note at all.
注意以下各句含义相同：Both boys have been ill, Both the boys have been ill, Both of the boys have been ill, The boys have both been ill（两个男孩都病了）。不能用 Both of boys have been ill，但在和代词一起使用时可以说 Both of them have been ill（他们两个都病了）。亦见all词条下的说明。

1. They sat for more than six hours, and both sides agreed they had aired all their differences
   他们一起坐了六个多小时，而且双方都认为他们已经表达了所有的不同意见。
2. An oil seal was replaced, along with both front wheel bearings.
   换了一个油封和两个前轮轴承。
3. Both sides have benefited from the talks.
   双方都从谈判中获益。
4. She cried out in fear and flung both arms up to protect her face
   她吓得大叫，并且抡起双臂护住了自己的脸。
5. Put both vegetables into a bowl and crush with a potato masher.
   把这两样蔬菜都放进一个碗里，然后用捣土豆器把它们捣碎。
6. Now women work both before and after having their children
   现在妇女在生孩子前后都要去工作。
7. Any such action would have to be approved by both American and Saudi leaders.
   任何这样的行动都必须获得美国和沙特领导人双方的批准。
8. She had met both sons and did not care for either.
   两个儿子她都见了，一个都不喜欢。
9. I have built up a loyal satisfied clientele for both African and European clothes.
   我已经发展了一批对非洲和欧洲的服装都很满意的忠实客户。
10. Mexico and the Philippines have both concluded agreements with their commercial bank creditors
    墨西哥和菲律宾均已与商业银行债权人达成了协议。
11. Both sides are willing to make allowances for each other's political sensitivities
    双方都愿意体谅彼此的政治敏感问题。
12. He had made a friend of both girls.
    他和两个女孩都成了朋友。
13. My grandmothers are both widows.
    我奶奶和外婆都是孤寡一人。
14. Both hawks and doves have expanded their conditions for ending the war.
    鹰派和鸽派都充分阐明了各自的停战条件。
15. Already, both sides are jockeying to belittle the other side.
    双方已经在使出浑身解数贬低对方了。
16. We both lost out
    我们俩都输了。
17. Both realism and naturalism are mimetic systems or practices of representation.
    现实主义和自然主义都是一种模仿体系或表现性的做法。
18. He is miserly with both his time and his money.
    他对时间和金钱都很吝啬。
19. He managed to reach a partial agreement with both republics.
    他设法与两个共和国都达成了部分协议。
20. You were both a prey to compulsions.
    你俩都太冲动了。
21. His painting went through both representational and abstract periods.
    他的绘画经历了具象风格和抽象风格两个阶段。
22. I had roomed with him in New Haven when we were both at Yale Law School.
    我和他都在耶鲁法学院读书的时候，在纽黑文合租了一个房间。
23. The floorboards in both this room and the dining room have been stripped, sanded and sealed.
    这个房间和餐厅的木地板都已经被刮除涂层并进行了打磨上蜡。
24. Unemployment is so damaging both to individuals and to communities.
    失业对个人和社会都有极大的负面影响。
25. Both sides have agreed.
    两下里都同意。
26. Both central and local initiative should be brought into play.
    发挥中央和地方两个积极性。
27. They were supported by us both materially and spiritually.
    他们既得到了我们的物质上的支持也得到我们精神上的声援。
28. The judge and jury hear all the evidence given by both sides.
    法官和陪审团听取了双方的证词。
29. Both plans have been tried, but without success.
    两个办法都试了试，但没有成功。
30. Both fish and tadpoles have gills.
    鱼和蝌蚪都有鳃。