eightieth
eightieth — ordinal number
1. the word for the number 80th in a sequence — meaning that there are seventy-nine
the word for the number 80th in a sequence — meaning that there are seventy-nine items or people before it and any number may follow after it.
The Watanabe family celebrated their grandfather's eightieth birthday with a big party.
ordinal before noun: eightieth birthday
Takeshi finished in eightieth place out of over two hundred runners in the marathon.
ordinal before noun: eightieth place
The eightieth chapter of the novel brings the main conflict to a turning point.
Lakshmi was the eightieth person to sign the petition at City Hall that morning.
文法句型
the eightieth + noun
eightieth + noun (when a person's name follows)
用法筆記
Usually used with the definite article 'the', as in 'the eightieth item on the list'. When the ordinal comes before a person's name (e.g. 'eightieth Pope'), 'the' is omitted.
常見錯誤
eightieth — noun
- eightiethsingular
- eightiethsplural
1. one part of a whole that has been split into eighty equal pieces; the fraction 1
one part of a whole that has been split into eighty equal pieces; the fraction 1/80.
Each heir received an eightieth of the total estate after the lawyer read the will.
an eightieth of + noun
The recipe calls for one eightieth of a gram of saffron, which is hard to measure at home.
Adina calculated that an eightieth of the building's cost would still be more than her yearly salary.
Lakan carefully measured an eightieth of the powder for the chemistry experiment.
文法句型
an eightieth of + noun
one eightieth
用法筆記
Most commonly found in mathematics, legal documents about shares or inheritance, and precise measurements. In everyday speech, people are more likely to say 'one in eighty' or use a decimal instead.
常見錯誤
2. the person or item that is number eighty in an ordered list, coming directly aft
the person or item that is number eighty in an ordered list, coming directly after the seventy-ninth entry.
Henry was the eightieth to board the plane, and only a few seats remained empty.
the eightieth to + verb
Christopher came in as the eightieth on the exam results list, just above the passing mark.
The eightieth in line at the ticket window got the last seat for the evening show.
Ayana discovered she was the eightieth caller and won a prize from the radio station.
文法句型
the eightieth in + noun phrase
用法筆記
Used when referring to a specific position within a sequence without naming the item itself ('the eightieth in the queue'). When modifying a noun directly, use the adjective form ('the eightieth customer') instead.
eightieth — adjective
- eightiethpositive
- more eightiethcomparative
- most eightiethsuperlative
1. being the item or person that occupies position number eighty in a group of thin
being the item or person that occupies position number eighty in a group of things counted one after another.
The eighth-grader was the eightieth student to cross the stage at the graduation ceremony.
the eightieth student to + verb
Élise wrote in her diary each day, and the eightieth page described the old library.
The school announced that the eightieth donor would receive a special thank-you gift from the principal.
Charlotte opened the eightieth envelope and found a handwritten letter from her grandmother.
文法句型
the eightieth + noun
a eightieth + noun
用法筆記
This is the most common way to use 'eightieth' — as a describing word before a noun. It is interchangeable with the ordinal number form when the ordinal appears before a noun ('the eightieth day' = 'day number 80').
常見錯誤
2. describing a portion that represents one of the eighty equal pieces that somethi
describing a portion that represents one of the eighty equal pieces that something has been split into.
The eightieth part of the farmland was set aside for a community garden project.
eightieth part (formal fraction pattern)
Tomás claimed an eightieth share of the mining rights under the new agreement between the families.
eightieth share of + noun
Each member of the cooperative received an eightieth portion of the annual profit from the harvest.
A small eightieth slice of the company went to each of the original investors.
文法句型
an eightieth share of + noun
eightieth part
用法筆記
More formal and less common than the noun form 'an eightieth of something'. Typically appears in legal, financial, or mathematical writing rather than everyday speech.