1
the eighteenth + noun
表示序列中的第十八个，后接名词。
The eighteenth century saw many scientific advancements.
十八世纪见证了众多科学进步。
第十八
先理解核心含义，再看它在真实句子里的用法。
第十八
the 18th in a series; next after the seventeenth
The eighteenth century saw many scientific advancements.
十八世纪见证了众多科学进步。
My office is on the eighteenth floor of that building.
我的办公室在那栋楼的第十八层。
She celebrates her eighteenth birthday next Saturday.
她下周六庆祝她的十八岁生日。
This is the eighteenth time I have asked you to clean your room.
这是我第十八次叫你打扫房间了。
表示序列中的第十八个，后接名词。
The eighteenth century saw many scientific advancements.
十八世纪见证了众多科学进步。
用于日期或部分整体关系。
The meeting is scheduled for the eighteenth of June.
会议定于六月十八日举行。
用于表示日期，常与介词on连用。
We moved into our new house on the eighteenth.
我们十八号搬进了新家。
作表语，表示顺序位置。
She was the eighteenth person to finish the race.
她是第十八个完成比赛的人。
Not this
He came in eighteen place.
Use this
He came in eighteenth place.
在序数中应使用序数词'eighteenth'而不是基数词'eighteen'。
Not this
It is the eightieth century.
Use this
It is the eighteenth century.
'eightieth'表示第80，而'eighteenth'表示第18，混淆了数字80和18。
Not this
I ate a eighteenth of the pizza.
Use this
I ate an eighteenth of the pizza.
'eighteenth'以元音音素开头，不定冠词应用'an'而不是'a'。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
十八世纪
The novel is set in the eighteenth century.
这部小说设定在十八世纪。
十八岁生日
She celebrated her eighteenth birthday with a big party.
她举办了一个盛大的派对庆祝她的十八岁生日。
第十八修正案
The Eighteenth Amendment established prohibition in the United States.
第十八修正案在美国确立了禁酒令。
第十八洞
He birdied the eighteenth hole to win the tournament.
他在第十八洞打出小鸟球，赢得了比赛。
第十八街
The address is 123 Eighteenth Street.
地址是第十八街123号。
第十八天
On the eighteenth day of the trial, the verdict was announced.
在审判的第十八天，宣布了判决。
第十八洞（高尔夫球场的最后一个洞）
He sank a long putt on the eighteenth hole to win the tournament.
他在第十八洞推进了一个长推杆，赢得了比赛。
美国宪法第十八修正案（禁酒令）
The Eighteenth Amendment was repealed by the Twenty-First Amendment in 1933.
美国宪法第十八修正案于1933年被第二十一修正案废除。
十八岁生日（成年）
She planned a big party for her eighteenth birthday.
她为她的十八岁生日筹划了一个盛大的派对。
Use eighteenth naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
eighteen（十八）+ th（序数后缀）= 第十八（eighteenth），记住词尾‘th’表示顺序。
[object Object]
序数词，通常置于名词前作定语
Dictionary facts from ECDICT, WIKTIONARY.