fifteen

fifteen — 數詞

1. the number that comes after fourteen and before sixteen in a counting sequence;

1.數詞A1
釋義

十五

介於十四與十六之間的整數

the number that comes after fourteen and before sixteen in a counting sequence; written as 15 in numerals.

例句

Romi is fifteen years old and just started high school.

Romi 今年十五歲，剛開始上高中。

age: be + number + years old

The art class has fifteen students this semester.

這學期美術課有十五名學生。

quantity: number + plural noun

用法筆記

In formal writing, spell out fifteen up to the number ninety-nine. Use numerals (15) for dates, times, and statistics.

常見錯誤

❌Fiveteen
✅fifteen
💡learners often add an extra 'e' after the 'v' by analogy with 'five'.
❌She is fifty years old.' (for age 15)
✅She is fifteen years old.
💡the -ty endings (fifty = 50) and -teen endings (fifteen = 15) are easily confused by learners.

fifteen — 名詞