eighteenth
eighteenth — adjective
1. coming after the seventeenth item in a series of things that are arranged or cou
coming after the seventeenth item in a series of things that are arranged or counted; written as the word '18th' when showing position in dates, lists, or rankings.
Quinn celebrated his eighteenth birthday with a small family dinner.
collocation: eighteenth birthday
The eighteenth chapter of the novel finally reveals the killer.
Hoa finished in eighteenth place in the city marathon.
This is the eighteenth year that the festival has been held in the park.
文法句型
the eighteenth + noun
possessive + eighteenth + noun
用法筆記
Ordinal numbers such as 'eighteenth' always go before the noun they describe. Do not use 'eighteenth' after cardinal numbers: ❌ 'Chapter eighteenth' ✅ 'the eighteenth chapter.'
常見錯誤
eighteenth — noun
1. one of the eighteen equal parts that a whole amount or object is divided into; t
one of the eighteen equal parts that a whole amount or object is divided into; the result of dividing a number or quantity by eighteen.
The pizza was cut into eighteen slices, so each person got an eighteenth.
pattern: an eighteenth = one eighteenth part
Joon used only one eighteenth of the flour that the recipe asked for.
Each heir received one eighteenth of the total value of the land.
A tiny amount, roughly an eighteenth of a teaspoon, was enough to season the dish.
- one-eighteenth
hyphenated form more common in technical writing
文法句型
an eighteenth of + noun
one eighteenth + noun
用法筆記
This sense is most common in mathematical, legal (inheritance shares), or measurement contexts. In everyday conversation, speakers usually say 'one eighteenth' rather than just 'an eighteenth' when clarity is needed.
常見錯誤
2. the person or thing that holds the number 18 position in an ordered list, compet
the person or thing that holds the number 18 position in an ordered list, competition, or sequence.
Ravindra was the eighteenth to sign up for the volunteer programme.
pattern: the + ordinal + to-infinitive
The eighteenth on the waiting list finally got a ticket.
Amira's song came in eighteenth out of ninety entries.
Only the first ten students received prizes, and the eighteenth received nothing.
The eighteenth of May is the day of the school sports event.
- 18th
the numerical form, used in writing and informal contexts
文法句型
the eighteenth + in/of + noun phrase
the + ordinal + to + base verb
用法筆記
When referring to a date, 'the eighteenth' (e.g. 'the eighteenth of May') is the standard spoken British form. In American English, 'May eighteenth' (without 'the') is also common.