英 [b?uθ] 美 [boθ]
adj. 二者，兩者都
pron. 二者
adv. 二者，二者都
conj. 不僅…而且…，…和…都
都； 兩； 既； 兩個
DET 限定詞兩個；兩個都 You use both when you are referring to two people or things and saying that something is true about each of them.
She cried out in fear and flung both arms up to protect her face... 她嚇得大叫，並且掄起雙臂護住了自己的臉。
Put both vegetables into a bowl and crush with a potato masher.
把這兩樣蔬菜都放進壹個碗裏，然後用搗土豆器把它們搗碎。
Both is also a quantifier.
Both of these women have strong memories of the Vietnam War...
這兩位婦女都對越南戰爭記憶深刻。
We're going to Andreas's Boutique to pick out something original for both of us.
我們要去安德烈亞斯禮品店為我們倆挑選壹些新奇玩意兒。
Both is also a pronoun.
Miss Brown and her friend, both from Stoke, were arrested on the 8th of June...
布朗小姐和她的朋友於6月8日被逮捕，她們兩人都來自斯托克。
Will there be public-works programmes, or community service, or both?
將會實施公***工程項目還是社區服務項目，還是二者都有？
Both is also an emphasizing pronoun.
He visited the Institute of Neurology in Havana where they both worked...
他訪問了兩人都曾工作過的哈瓦那的神經病學研究所。
'Well, I'll leave you both, then,' said Gregory.
“好吧，那我就不打擾妳們倆了。”格雷戈裏說道。
Both is also a predeterminer.
Both the band's writers are fascinating lyricists...
樂隊的這兩位作詞人都是非常出色的填詞高手。
Both the horses were out, tacked up and ready to ride.
兩匹馬都牽出來裝上了馬具，可以騎了。
2. 連詞不僅…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.
Now women work both before and after having their children... 現在婦女在生孩子前後都要去工作。
Any such action would have to be approved by both American and Saudi leaders.
任何這樣的行動都必須獲得美國和沙特領導人雙方的批準。
He charged at me with his head down and both fists flying.
他低著頭，揮舞雙拳朝我沖來。
2. When we use "he", we generalize for both sex.
當我們用he時，我們泛指男女。
3. He held both sides of the parka hood closed against the snow.
他捏緊皮外套上風帽的兩邊以擋住襲來的飛雪。
4. The captain cares the safety of both the crew and the passengers.
船長為船員和旅客們的安全操心。
5. Bill is both a good swimmer and a good cook.
比爾不僅是個遊泳好手，而且是個烹調能手。