eighty
eighty — 數詞
1. The number that comes after seventy-nine and before eighty-one, written as the d
八十
數字八十，表示數量
The number that comes after seventy-nine and before eighty-one, written as the digits 80; used before a noun to say how many of something there are.
Wei invited eighty guests to his wedding reception.
Wei 邀請了八十位賓客參加他的婚宴。
eighty + plural noun for quantity
The old banyan tree next to the temple is over eighty years old.
寺旁那棵老榕樹已經超過八十年了。
over eighty + unit of time
Eighty percent of the villagers voted in the local election.
這場地方選舉中，百分之八十的村民都投了票。
The express train travels at eighty miles per hour along the coast.
這列特快車沿著海岸以每小時八十英里的速度行駛。
Kim saved eighty dollars by buying the sofa during the Lunar New Year sale.
Kim 趁農曆新年促銷買沙發，省下了八十美元。
文法句型
eighty + plural noun
eighty + years/miles/dollars/percent
be + eighty + years old
用法筆記
Unlike nouns, the number 'eighty' does not take 'a' or 'an' when it directly modifies a noun: 'eighty students' (NOT 'an eighty students'). Use 'eighty' before the noun it counts, just like other cardinal numbers. When talking about age, 'He is eighty' (without 'years old') is common in everyday speech, but 'years old' is added before a noun: 'an eighty-year-old building'.
常見錯誤
eighty — 名詞
1. The number 80 considered as a figure or an amount, rather than as a way to count
數字八十
八十這個數字或數值
The number 80 considered as a figure or an amount, rather than as a way to count things; the written symbol '80' or the value that equals eight times ten.
Write the number eighty in the box at the top of the form.
請在表格上方空白處填寫數字八十。
the number + eighty for the figure
Nadia counted eighty pebbles on the beach before putting them in a jar.
Nadia 在海灘上數了八十顆鵝卵石，然後把它們放進罐子裡。
count + number + plural noun for concrete quantity
Sofia scored an eighty on her chemistry midterm exam.
Sofia 化學期中考拿了八十分。
Diego counted up to eighty before taking a short rest.
Diego 數到八十之後才停下來休息。
Haruto wrote the number eighty at the bottom of the cheque and signed his name.
Haruto 在支票下方寫下數字八十，然後簽上自己的名字。
文法句型
a + eighty + (score/out of)
the number eighty
eighty as a figure/symbol
用法筆記
As a countable noun, 'eighty' can take an article: 'an eighty' means a score or mark of 80. This sense is common in education (test scores), maths (arithmetic), and games (points). To talk about a person's age in the 80–89 range, use the plural 'eighties' (see the second noun sense).
常見錯誤
2. The range of numbers from 80 to 89, especially used to describe a person's age (
八十幾
八十到八十九的年歲或年代
The range of numbers from 80 to 89, especially used to describe a person's age (being between 80 and 89 years old), a temperature range, or the years of a decade such as the 1980s.
Zara is in her eighties but still swims every morning at the local pool.
Zara 已經八十多歲了，但每天早上還是去社區游泳池游泳。
in one's eighties for age range
Nadia loved the bright colors and pop music of the nineteen-eighties.
Nadia 很喜歡一九八零年代鮮豔的色彩和流行音樂。
the nineteen-eighties for the decade
The temperature climbed into the high eighties during the July heat wave.
七月熱浪來襲時，氣溫升到了華氏八十幾度。
Haruto's grandmother learned to video-call her family in her late eighties.
Haruto 的祖母將近九十歲時學會了用視訊打電話給家人。
Many hit songs from the eighties are still played on radio stations today.
八零年代的許多熱門歌曲到今天還在電臺播放。
文法句型
in one's eighties
the (early/mid/late) eighties
the nineteen-eighties
the (low/high) eighties
用法筆記
This sense is always used in the plural form 'eighties'. For ages, use a possessive determiner: 'in her eighties', 'in his eighties'. For decades, use 'the eighties' or 'the nineteen-eighties'. For temperatures, use 'the low eighties' (80–83°F), 'the mid-eighties' (84–86°F), or 'the high eighties' (87–89°F). Do not use this form for the exact number 80 — that is the first noun sense.