日期和序数词 (A1)

要说排在第几个，或者一个月里的第几天，就用 first、second、third。这三个不按规律变，要单独记。

first, second, third（第一、第二、第三）

• first /fɜːrst/ — Amina is first in the line.
• second /ˈsek.ənd/ — Lars is second.
• third /θɜːrd/ — The class is on March third.
• 试一试: 🚪 THE LINE AT THE DESK 1 — Amina 2 — Lars 3 — Mei Hiroshi: Where is Lars? Camila: He is ___ in the line. (second / first / third) 答案: second — 牌子上 Lars 排在 2 号，队伍里的 2 号就是 second。

third 之后的词尾

其他大多数数字，看最后一个数字词，加上 -th： four → fourth six → sixth ten → tenth 结尾的 -y 要先变成 -ie：twenty → twentieth。有几个变化稍微大一点，比如 five → fifth。 过了 twenty，规律又重新开始，所以 twenty-one → twenty-first。

• fourth /fɔːrθ/ — My class is on June fourth.
• tenth /tenθ/ — The party is on the tenth.
• twentieth /ˈtwen.ti.əθ/ — We meet on the twentieth.
• twenty-first /ˌtwen.ti ˈfɜːrst/ — Her birthday is on the twenty-first.
• 试一试: Wei: The art show is on June 6. Yasmin: June ___. I can come. 补全 Yasmin 的这句话。 (sixth / sixteenth / six) 答案: sixth — Wei 说的是 June 6，six 要加 -th：June sixth。six 只是普通的数字，sixteenth 就变成 June 16 了。

birthday 和 date of birth

birthday 是你开派对的那一天。date of birth 是同一天，写在表格上。在美国，月份写在前面：May 3 写成 5/3。

• birthday /ˈbɜːrθ.deɪ/ — Happy birthday, Mei!
• date of birth /ˌdeɪt əv ˈbɜːrθ/ — Date of birth: 5/3
• 试一试: 📝 NEW MEMBER FORM Name: Mateo Date of birth: 4/9 Lani: So which month? Sofia: The month is written first, so it is ___. (April / September / May) 答案: April — 在美国月份写在前面，所以 4/9 是第四个月，也就是 April，第九天。

年份怎么说

年份要分成两半来说，不是当成一个大数字： 1998 → nineteen ninety-eight 2024 → twenty twenty-four 2000 到 2009 年要整个说出来：2000 → two thousand。

• thousand /ˈθaʊ.zənd/ — the year two thousand
• 试一试: Ira: I write my date of birth here. It is nineteen ninety-eight. Diego: So I write ___. 补全 Diego 的这句话。 (1998 / 1908 / 1918) 答案: 1998 — 两半分别是 nineteen 和 ninety-eight，所以年份是 1998。