Word · Frequency #7182
fifteenth
第十五
核心释义
十五分之一
用法In use
Today is the fifteenth of May, and we are having a party.
用法提示：fifteenth 表示日期中的第十五天，作序数词。
He finished in fifteenth place out of fifty runners.
用法提示：fifteenth 表示排名中的第十五位，修饰名词 place。
Please open your books to the fifteenth chapter.
用法提示：fifteenth 表示顺序中的第十五，修饰名词 chapter。
the fifteenth [noun]
表示顺序
She finished in the fifteenth position.
她完成了第十五名的成绩。
a fifteenth [of noun]
表示分数
He ate a fifteenth of the cake.
他吃了蛋糕的十五分之一。
on the fifteenth
表示日期
The meeting is on the fifteenth of May.
会议在五月十五日举行。
常见错误Common mistakes
易错句子He arrived on fifteenth of May.正确表达He arrived on the fifteenth of May.
序数词前通常需要加定冠词"the"，表示特定顺序。
易错句子She came in fifteen place.正确表达She came in fifteenth place.
表示名次或顺序应用序数词"fifteenth"而非基数词"fifteen"。
相关词与表达Connections
搭配Collocations
- fifteenth century
- 十五世纪
- The castle was built in the fifteenth century.这座城堡建于十五世纪。
- fifteenth birthday
- 十五岁生日
- She is planning a big party for her fifteenth birthday.她正在为她的十五岁生日筹划一个大型派对。
- fifteenth floor
- 第十五层
- My office is on the fifteenth floor of the building.我的办公室在这栋楼的第十五层。
- fifteenth anniversary
- 十五周年纪念
- They celebrated their fifteenth wedding anniversary in Paris.他们在巴黎庆祝了他们的结婚十五周年纪念。
- fifteenth place
学习提示Learner notes
记忆技巧Memory Tip
fifteenth 中 'fifteen' 是十五，加 'th' 变序数，联想：十五号生日，蛋糕上插着 '15th' 蜡烛。
语境与语域Context & Register
通常用于表示顺序（如日期中的第十五天）或分数（十五分之一），中性语域，适用于各种正式和非正式场合。
发音与拼写Pronunciation & Spelling
All listed words share the '-teenth' ending and rhyme with the target word 'fifteenth' /ˌfɪfˈtiːnθ/. However, note that words like 'fifteen' (/ˌfɪfˈtiːn/) are lookalikes but lack the final /θ/ sound, so they do not rhyme. Also 'fiftieth' (/ˈfɪftiəθ/) has a different vowel and ending.
用法优先级Usage priority
Collins 词频等级为 4，建议结合例句记忆，而不是只背中文释义。
一起学习词形Learn the forms together
页面下方列出了常见词形变化。学习时注意它们在句子中的语法位置。
Dictionary facts from ECDICT, WIKTIONARY.